/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_label46+token_ring.03.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:32:08,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:32:08,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:32:08,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:32:08,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:32:08,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:32:08,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:32:08,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:32:08,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:32:08,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:32:08,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:32:08,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:32:08,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:32:08,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:32:08,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:32:08,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:32:08,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:32:08,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:32:08,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:32:08,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:32:08,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:32:08,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:32:08,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:32:08,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:32:08,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 19:32:08,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:32:08,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:32:08,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:32:08,756 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 19:32:08,777 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:32:08,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:32:08,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:32:08,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:32:08,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:32:08,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:32:08,779 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:32:08,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:32:08,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:32:08,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:32:08,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:32:08,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:32:08,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:32:08,780 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:32:08,780 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:32:08,780 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:32:08,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:32:08,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:32:08,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:32:08,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:32:08,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:32:08,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:32:08,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:32:08,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:32:08,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:32:08,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:32:08,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:32:08,782 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:32:08,782 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:32:08,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:32:08,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:32:08,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:32:08,784 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:32:08,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:32:09,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:32:09,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:32:09,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:32:09,066 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:32:09,066 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:32:09,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.03.cil-1.c [2022-01-10 19:32:09,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a8c65b31/3845f972d98c4290acb69426fe77f51a/FLAG488ab031d [2022-01-10 19:32:09,895 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:32:09,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.03.cil-1.c [2022-01-10 19:32:09,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a8c65b31/3845f972d98c4290acb69426fe77f51a/FLAG488ab031d [2022-01-10 19:32:10,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a8c65b31/3845f972d98c4290acb69426fe77f51a [2022-01-10 19:32:10,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:32:10,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:32:10,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:32:10,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:32:10,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:32:10,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:32:10" (1/1) ... [2022-01-10 19:32:10,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a3181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:32:10, skipping insertion in model container [2022-01-10 19:32:10,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:32:10" (1/1) ... [2022-01-10 19:32:10,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:32:10,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:32:12,218 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_label46+token_ring.03.cil-1.c[382357,382370] [2022-01-10 19:32:12,243 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_label46+token_ring.03.cil-1.c[383339,383352] [2022-01-10 19:32:12,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:32:12,407 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:32:13,164 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_label46+token_ring.03.cil-1.c[382357,382370] [2022-01-10 19:32:13,168 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_label46+token_ring.03.cil-1.c[383339,383352] [2022-01-10 19:32:13,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:32:13,245 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:32:13,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:32:13 WrapperNode [2022-01-10 19:32:13,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:32:13,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:32:13,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:32:13,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:32:13,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:32:13" (1/1) ... [2022-01-10 19:32:13,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:32:13" (1/1) ... [2022-01-10 19:32:13,826 INFO L137 Inliner]: procedures = 51, calls = 51, calls flagged for inlining = 46, calls inlined = 73, statements flattened = 13160 [2022-01-10 19:32:13,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:32:13,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:32:13,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:32:13,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:32:13,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:32:13" (1/1) ... [2022-01-10 19:32:13,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:32:13" (1/1) ... [2022-01-10 19:32:13,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:32:13" (1/1) ... [2022-01-10 19:32:13,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:32:13" (1/1) ... [2022-01-10 19:32:14,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:32:13" (1/1) ... [2022-01-10 19:32:14,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:32:13" (1/1) ... [2022-01-10 19:32:14,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:32:13" (1/1) ... [2022-01-10 19:32:14,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:32:14,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:32:14,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:32:14,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:32:14,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:32:13" (1/1) ... [2022-01-10 19:32:14,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:32:14,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:32:14,244 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 19:32:14,271 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 19:32:14,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:32:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:32:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:32:14,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:32:14,424 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:32:14,425 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:32:22,752 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:32:22,775 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:32:22,775 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-01-10 19:32:22,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:32:22 BoogieIcfgContainer [2022-01-10 19:32:22,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:32:22,779 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:32:22,779 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:32:22,780 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:32:22,782 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:32:22" (1/1) ... [2022-01-10 19:32:24,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:32:24 BasicIcfg [2022-01-10 19:32:24,292 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:32:24,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:32:24,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:32:24,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:32:24,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:32:10" (1/4) ... [2022-01-10 19:32:24,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:32:24, skipping insertion in model container [2022-01-10 19:32:24,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:32:13" (2/4) ... [2022-01-10 19:32:24,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:32:24, skipping insertion in model container [2022-01-10 19:32:24,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:32:22" (3/4) ... [2022-01-10 19:32:24,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:32:24, skipping insertion in model container [2022-01-10 19:32:24,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:32:24" (4/4) ... [2022-01-10 19:32:24,299 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.03.cil-1.cTransformedIcfg [2022-01-10 19:32:24,305 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:32:24,305 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 19:32:24,357 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:32:24,365 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 19:32:24,365 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 19:32:24,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 2516 states, 2512 states have (on average 1.8288216560509554) internal successors, (4594), 2515 states have internal predecessors, (4594), 0 states have call successors, (0), 0 states 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 19:32:24,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:32:24,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:24,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:32:24,424 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:24,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:24,429 INFO L85 PathProgramCache]: Analyzing trace with hash -202657724, now seen corresponding path program 1 times [2022-01-10 19:32:24,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:24,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52423025] [2022-01-10 19:32:24,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:24,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:24,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:32:24,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:24,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52423025] [2022-01-10 19:32:24,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52423025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:24,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:24,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:32:24,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865519772] [2022-01-10 19:32:24,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:24,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:24,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:24,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:24,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:24,758 INFO L87 Difference]: Start difference. First operand has 2516 states, 2512 states have (on average 1.8288216560509554) internal successors, (4594), 2515 states have internal predecessors, (4594), 0 states have call successors, (0), 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 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:25,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:25,002 INFO L93 Difference]: Finished difference Result 5266 states and 9548 transitions. [2022-01-10 19:32:25,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:25,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:32:25,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:25,030 INFO L225 Difference]: With dead ends: 5266 [2022-01-10 19:32:25,030 INFO L226 Difference]: Without dead ends: 2690 [2022-01-10 19:32:25,039 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 19:32:25,042 INFO L933 BasicCegarLoop]: 4509 mSDtfsCounter, 4457 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4457 SdHoareTripleChecker+Valid, 4910 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 19:32:25,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4457 Valid, 4910 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:25,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2022-01-10 19:32:25,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2686. [2022-01-10 19:32:25,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2683 states have (on average 1.7897875512486023) internal successors, (4802), 2685 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states 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 19:32:25,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4802 transitions. [2022-01-10 19:32:25,188 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4802 transitions. Word has length 66 [2022-01-10 19:32:25,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:25,188 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 4802 transitions. [2022-01-10 19:32:25,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:25,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4802 transitions. [2022-01-10 19:32:25,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:32:25,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:25,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:32:25,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:32:25,193 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:25,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:25,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1062444132, now seen corresponding path program 1 times [2022-01-10 19:32:25,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:25,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011444623] [2022-01-10 19:32:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:25,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:25,263 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 19:32:25,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:25,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011444623] [2022-01-10 19:32:25,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011444623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:25,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:25,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:32:25,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074871316] [2022-01-10 19:32:25,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:25,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:25,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:25,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:25,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:25,267 INFO L87 Difference]: Start difference. First operand 2686 states and 4802 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:25,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:25,350 INFO L93 Difference]: Finished difference Result 3240 states and 5630 transitions. [2022-01-10 19:32:25,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:25,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:32:25,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:25,363 INFO L225 Difference]: With dead ends: 3240 [2022-01-10 19:32:25,364 INFO L226 Difference]: Without dead ends: 2686 [2022-01-10 19:32:25,367 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 19:32:25,369 INFO L933 BasicCegarLoop]: 4436 mSDtfsCounter, 4430 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4430 SdHoareTripleChecker+Valid, 4436 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 19:32:25,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4430 Valid, 4436 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:25,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-10 19:32:25,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2022-01-10 19:32:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2683 states have (on average 1.7868058143868804) internal successors, (4794), 2685 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states 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 19:32:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4794 transitions. [2022-01-10 19:32:25,440 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4794 transitions. Word has length 66 [2022-01-10 19:32:25,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:25,440 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 4794 transitions. [2022-01-10 19:32:25,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:25,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4794 transitions. [2022-01-10 19:32:25,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:32:25,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:25,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:32:25,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:32:25,453 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:25,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:25,454 INFO L85 PathProgramCache]: Analyzing trace with hash -282219452, now seen corresponding path program 1 times [2022-01-10 19:32:25,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:25,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866821765] [2022-01-10 19:32:25,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:25,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:25,536 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 19:32:25,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:25,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866821765] [2022-01-10 19:32:25,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866821765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:25,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:25,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:32:25,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551382107] [2022-01-10 19:32:25,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:25,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:25,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:25,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:25,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:25,539 INFO L87 Difference]: Start difference. First operand 2686 states and 4794 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:25,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:25,606 INFO L93 Difference]: Finished difference Result 3239 states and 5613 transitions. [2022-01-10 19:32:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:25,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:32:25,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:25,616 INFO L225 Difference]: With dead ends: 3239 [2022-01-10 19:32:25,616 INFO L226 Difference]: Without dead ends: 2686 [2022-01-10 19:32:25,620 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 19:32:25,621 INFO L933 BasicCegarLoop]: 4431 mSDtfsCounter, 4424 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4424 SdHoareTripleChecker+Valid, 4431 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 19:32:25,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4424 Valid, 4431 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:25,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-10 19:32:25,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2022-01-10 19:32:25,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2683 states have (on average 1.7838240775251584) internal successors, (4786), 2685 states have internal predecessors, (4786), 0 states have call successors, (0), 0 states 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 19:32:25,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4786 transitions. [2022-01-10 19:32:25,683 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4786 transitions. Word has length 66 [2022-01-10 19:32:25,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:25,684 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 4786 transitions. [2022-01-10 19:32:25,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:25,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4786 transitions. [2022-01-10 19:32:25,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:32:25,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:25,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:32:25,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:32:25,687 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:25,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:25,687 INFO L85 PathProgramCache]: Analyzing trace with hash 367140964, now seen corresponding path program 1 times [2022-01-10 19:32:25,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:25,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044921935] [2022-01-10 19:32:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:25,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:25,745 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 19:32:25,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:25,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044921935] [2022-01-10 19:32:25,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044921935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:25,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:25,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:32:25,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901120205] [2022-01-10 19:32:25,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:25,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:25,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:25,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:25,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:25,748 INFO L87 Difference]: Start difference. First operand 2686 states and 4786 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:25,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:25,942 INFO L93 Difference]: Finished difference Result 3238 states and 5596 transitions. [2022-01-10 19:32:25,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:25,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:32:25,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:25,952 INFO L225 Difference]: With dead ends: 3238 [2022-01-10 19:32:25,952 INFO L226 Difference]: Without dead ends: 2686 [2022-01-10 19:32:25,955 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 19:32:25,956 INFO L933 BasicCegarLoop]: 4426 mSDtfsCounter, 4418 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 4426 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:32:25,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 4426 Invalid, 9 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:25,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-10 19:32:25,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2022-01-10 19:32:26,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2683 states have (on average 1.7808423406634364) internal successors, (4778), 2685 states have internal predecessors, (4778), 0 states have call successors, (0), 0 states 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 19:32:26,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4778 transitions. [2022-01-10 19:32:26,009 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4778 transitions. Word has length 66 [2022-01-10 19:32:26,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:26,009 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 4778 transitions. [2022-01-10 19:32:26,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:26,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4778 transitions. [2022-01-10 19:32:26,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:32:26,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:26,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:32:26,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:32:26,011 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:26,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:26,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1967216572, now seen corresponding path program 1 times [2022-01-10 19:32:26,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:26,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924401611] [2022-01-10 19:32:26,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:26,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:26,059 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 19:32:26,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:26,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924401611] [2022-01-10 19:32:26,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924401611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:26,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:26,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:32:26,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994791507] [2022-01-10 19:32:26,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:26,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:26,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:26,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:26,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:26,061 INFO L87 Difference]: Start difference. First operand 2686 states and 4778 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:26,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:26,137 INFO L93 Difference]: Finished difference Result 3237 states and 5579 transitions. [2022-01-10 19:32:26,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:26,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:32:26,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:26,147 INFO L225 Difference]: With dead ends: 3237 [2022-01-10 19:32:26,147 INFO L226 Difference]: Without dead ends: 2686 [2022-01-10 19:32:26,149 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 19:32:26,150 INFO L933 BasicCegarLoop]: 4409 mSDtfsCounter, 4364 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4364 SdHoareTripleChecker+Valid, 4447 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 19:32:26,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4364 Valid, 4447 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:26,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-10 19:32:26,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2022-01-10 19:32:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2683 states have (on average 1.7741334327245621) internal successors, (4760), 2685 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states 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 19:32:26,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4760 transitions. [2022-01-10 19:32:26,207 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4760 transitions. Word has length 66 [2022-01-10 19:32:26,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:26,210 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 4760 transitions. [2022-01-10 19:32:26,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:26,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4760 transitions. [2022-01-10 19:32:26,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:32:26,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:26,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:32:26,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:32:26,214 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:26,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:26,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1856693731, now seen corresponding path program 1 times [2022-01-10 19:32:26,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:26,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623995326] [2022-01-10 19:32:26,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:26,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:26,280 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 19:32:26,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:26,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623995326] [2022-01-10 19:32:26,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623995326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:26,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:26,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:32:26,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979320777] [2022-01-10 19:32:26,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:26,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:26,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:26,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:26,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:26,283 INFO L87 Difference]: Start difference. First operand 2686 states and 4760 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:26,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:26,375 INFO L93 Difference]: Finished difference Result 3236 states and 5542 transitions. [2022-01-10 19:32:26,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:26,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:32:26,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:26,384 INFO L225 Difference]: With dead ends: 3236 [2022-01-10 19:32:26,384 INFO L226 Difference]: Without dead ends: 2686 [2022-01-10 19:32:26,385 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 19:32:26,389 INFO L933 BasicCegarLoop]: 4398 mSDtfsCounter, 4353 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4353 SdHoareTripleChecker+Valid, 4435 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 19:32:26,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4353 Valid, 4435 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:26,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-10 19:32:26,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2022-01-10 19:32:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2683 states have (on average 1.7674245247856877) internal successors, (4742), 2685 states have internal predecessors, (4742), 0 states have call successors, (0), 0 states 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 19:32:26,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4742 transitions. [2022-01-10 19:32:26,454 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4742 transitions. Word has length 66 [2022-01-10 19:32:26,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:26,455 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 4742 transitions. [2022-01-10 19:32:26,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:26,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4742 transitions. [2022-01-10 19:32:26,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:32:26,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:26,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:32:26,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:32:26,456 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:26,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:26,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1314655614, now seen corresponding path program 1 times [2022-01-10 19:32:26,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:26,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059072913] [2022-01-10 19:32:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:26,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:26,503 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 19:32:26,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:26,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059072913] [2022-01-10 19:32:26,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059072913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:26,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:26,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:32:26,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278231886] [2022-01-10 19:32:26,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:26,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:26,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:26,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:26,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:26,505 INFO L87 Difference]: Start difference. First operand 2686 states and 4742 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:26,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:26,577 INFO L93 Difference]: Finished difference Result 3235 states and 5505 transitions. [2022-01-10 19:32:26,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:26,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:32:26,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:26,587 INFO L225 Difference]: With dead ends: 3235 [2022-01-10 19:32:26,588 INFO L226 Difference]: Without dead ends: 2686 [2022-01-10 19:32:26,589 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 19:32:26,592 INFO L933 BasicCegarLoop]: 4387 mSDtfsCounter, 4342 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4342 SdHoareTripleChecker+Valid, 4423 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 19:32:26,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4342 Valid, 4423 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:26,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-10 19:32:26,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2022-01-10 19:32:26,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2683 states have (on average 1.7607156168468132) internal successors, (4724), 2685 states have internal predecessors, (4724), 0 states have call successors, (0), 0 states 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 19:32:26,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4724 transitions. [2022-01-10 19:32:26,674 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4724 transitions. Word has length 66 [2022-01-10 19:32:26,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:26,674 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 4724 transitions. [2022-01-10 19:32:26,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4724 transitions. [2022-01-10 19:32:26,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:32:26,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:26,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:32:26,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:32:26,680 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:26,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:26,680 INFO L85 PathProgramCache]: Analyzing trace with hash -720388447, now seen corresponding path program 1 times [2022-01-10 19:32:26,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:26,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567995747] [2022-01-10 19:32:26,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:26,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:26,711 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 19:32:26,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:26,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567995747] [2022-01-10 19:32:26,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567995747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:26,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:26,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:32:26,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610524153] [2022-01-10 19:32:26,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:26,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:26,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:26,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:26,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:26,714 INFO L87 Difference]: Start difference. First operand 2686 states and 4724 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:26,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:26,783 INFO L93 Difference]: Finished difference Result 3234 states and 5468 transitions. [2022-01-10 19:32:26,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:26,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:32:26,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:26,792 INFO L225 Difference]: With dead ends: 3234 [2022-01-10 19:32:26,792 INFO L226 Difference]: Without dead ends: 2686 [2022-01-10 19:32:26,793 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 19:32:26,794 INFO L933 BasicCegarLoop]: 4376 mSDtfsCounter, 4331 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4331 SdHoareTripleChecker+Valid, 4411 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 19:32:26,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4331 Valid, 4411 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:26,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-10 19:32:26,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2022-01-10 19:32:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2683 states have (on average 1.754006708907939) internal successors, (4706), 2685 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states 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 19:32:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4706 transitions. [2022-01-10 19:32:26,855 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4706 transitions. Word has length 66 [2022-01-10 19:32:26,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:26,856 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 4706 transitions. [2022-01-10 19:32:26,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4706 transitions. [2022-01-10 19:32:26,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:32:26,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:26,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:32:26,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:32:26,858 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:26,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:26,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1238681983, now seen corresponding path program 1 times [2022-01-10 19:32:26,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:26,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932026510] [2022-01-10 19:32:26,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:26,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:26,910 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 19:32:26,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:26,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932026510] [2022-01-10 19:32:26,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932026510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:26,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:26,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:32:26,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768777203] [2022-01-10 19:32:26,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:26,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:26,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:26,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:26,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:26,912 INFO L87 Difference]: Start difference. First operand 2686 states and 4706 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:27,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:27,022 INFO L93 Difference]: Finished difference Result 3710 states and 6065 transitions. [2022-01-10 19:32:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:27,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 19:32:27,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:27,041 INFO L225 Difference]: With dead ends: 3710 [2022-01-10 19:32:27,041 INFO L226 Difference]: Without dead ends: 3164 [2022-01-10 19:32:27,044 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 19:32:27,044 INFO L933 BasicCegarLoop]: 4377 mSDtfsCounter, 4291 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4291 SdHoareTripleChecker+Valid, 4722 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:32:27,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4291 Valid, 4722 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:27,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2022-01-10 19:32:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 3110. [2022-01-10 19:32:27,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3110 states, 3107 states have (on average 1.6919858384293531) internal successors, (5257), 3109 states have internal predecessors, (5257), 0 states have call successors, (0), 0 states 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 19:32:27,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 5257 transitions. [2022-01-10 19:32:27,145 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 5257 transitions. Word has length 66 [2022-01-10 19:32:27,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:27,146 INFO L470 AbstractCegarLoop]: Abstraction has 3110 states and 5257 transitions. [2022-01-10 19:32:27,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:32:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 5257 transitions. [2022-01-10 19:32:27,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 19:32:27,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:27,151 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] [2022-01-10 19:32:27,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:32:27,151 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:27,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:27,151 INFO L85 PathProgramCache]: Analyzing trace with hash 945473165, now seen corresponding path program 1 times [2022-01-10 19:32:27,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:27,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117237921] [2022-01-10 19:32:27,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:27,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:27,222 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 19:32:27,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:27,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117237921] [2022-01-10 19:32:27,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117237921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:27,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:27,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:32:27,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536213093] [2022-01-10 19:32:27,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:27,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:27,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:27,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:27,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:27,225 INFO L87 Difference]: Start difference. First operand 3110 states and 5257 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 19:32:27,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:27,431 INFO L93 Difference]: Finished difference Result 4950 states and 7688 transitions. [2022-01-10 19:32:27,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:27,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-10 19:32:27,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:27,439 INFO L225 Difference]: With dead ends: 4950 [2022-01-10 19:32:27,439 INFO L226 Difference]: Without dead ends: 3986 [2022-01-10 19:32:27,440 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 19:32:27,441 INFO L933 BasicCegarLoop]: 4374 mSDtfsCounter, 4309 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4309 SdHoareTripleChecker+Valid, 4719 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:32:27,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4309 Valid, 4719 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:27,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2022-01-10 19:32:27,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3894. [2022-01-10 19:32:27,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3894 states, 3891 states have (on average 1.61526599845798) internal successors, (6285), 3893 states have internal predecessors, (6285), 0 states have call successors, (0), 0 states 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 19:32:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3894 states to 3894 states and 6285 transitions. [2022-01-10 19:32:27,544 INFO L78 Accepts]: Start accepts. Automaton has 3894 states and 6285 transitions. Word has length 106 [2022-01-10 19:32:27,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:27,545 INFO L470 AbstractCegarLoop]: Abstraction has 3894 states and 6285 transitions. [2022-01-10 19:32:27,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 19:32:27,545 INFO L276 IsEmpty]: Start isEmpty. Operand 3894 states and 6285 transitions. [2022-01-10 19:32:27,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 19:32:27,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:27,547 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] [2022-01-10 19:32:27,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:32:27,547 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:27,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:27,547 INFO L85 PathProgramCache]: Analyzing trace with hash 426970764, now seen corresponding path program 1 times [2022-01-10 19:32:27,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:27,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234040653] [2022-01-10 19:32:27,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:27,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:27,588 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 19:32:27,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:27,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234040653] [2022-01-10 19:32:27,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234040653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:27,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:27,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:32:27,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446585245] [2022-01-10 19:32:27,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:27,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:27,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:27,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:27,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:27,591 INFO L87 Difference]: Start difference. First operand 3894 states and 6285 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 19:32:27,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:27,771 INFO L93 Difference]: Finished difference Result 7251 states and 10656 transitions. [2022-01-10 19:32:27,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:27,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-10 19:32:27,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:27,782 INFO L225 Difference]: With dead ends: 7251 [2022-01-10 19:32:27,783 INFO L226 Difference]: Without dead ends: 5531 [2022-01-10 19:32:27,787 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 19:32:27,788 INFO L933 BasicCegarLoop]: 4466 mSDtfsCounter, 4318 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4318 SdHoareTripleChecker+Valid, 4865 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:32:27,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4318 Valid, 4865 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:27,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5531 states. [2022-01-10 19:32:27,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5531 to 5455. [2022-01-10 19:32:27,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5455 states, 5452 states have (on average 1.516140865737344) internal successors, (8266), 5454 states have internal predecessors, (8266), 0 states have call successors, (0), 0 states 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 19:32:27,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5455 states to 5455 states and 8266 transitions. [2022-01-10 19:32:27,968 INFO L78 Accepts]: Start accepts. Automaton has 5455 states and 8266 transitions. Word has length 106 [2022-01-10 19:32:27,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:27,969 INFO L470 AbstractCegarLoop]: Abstraction has 5455 states and 8266 transitions. [2022-01-10 19:32:27,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 19:32:27,969 INFO L276 IsEmpty]: Start isEmpty. Operand 5455 states and 8266 transitions. [2022-01-10 19:32:27,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 19:32:27,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:27,972 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] [2022-01-10 19:32:27,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 19:32:27,972 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:27,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:27,972 INFO L85 PathProgramCache]: Analyzing trace with hash -420964564, now seen corresponding path program 1 times [2022-01-10 19:32:27,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:27,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498280680] [2022-01-10 19:32:27,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:27,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:28,005 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 19:32:28,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:28,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498280680] [2022-01-10 19:32:28,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498280680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:28,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:28,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:32:28,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870953831] [2022-01-10 19:32:28,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:28,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:28,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:28,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:28,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:28,007 INFO L87 Difference]: Start difference. First operand 5455 states and 8266 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 19:32:28,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:28,162 INFO L93 Difference]: Finished difference Result 8713 states and 12484 transitions. [2022-01-10 19:32:28,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:28,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 106 [2022-01-10 19:32:28,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:28,173 INFO L225 Difference]: With dead ends: 8713 [2022-01-10 19:32:28,173 INFO L226 Difference]: Without dead ends: 5408 [2022-01-10 19:32:28,178 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 19:32:28,178 INFO L933 BasicCegarLoop]: 4381 mSDtfsCounter, 419 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 8339 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 19:32:28,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 8339 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:28,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5408 states. [2022-01-10 19:32:28,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5408 to 5408. [2022-01-10 19:32:28,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5408 states, 5405 states have (on average 1.518963922294172) internal successors, (8210), 5407 states have internal predecessors, (8210), 0 states have call successors, (0), 0 states 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 19:32:28,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5408 states to 5408 states and 8210 transitions. [2022-01-10 19:32:28,337 INFO L78 Accepts]: Start accepts. Automaton has 5408 states and 8210 transitions. Word has length 106 [2022-01-10 19:32:28,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:28,337 INFO L470 AbstractCegarLoop]: Abstraction has 5408 states and 8210 transitions. [2022-01-10 19:32:28,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 19:32:28,337 INFO L276 IsEmpty]: Start isEmpty. Operand 5408 states and 8210 transitions. [2022-01-10 19:32:28,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 19:32:28,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:28,340 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] [2022-01-10 19:32:28,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 19:32:28,340 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:28,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:28,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1577245362, now seen corresponding path program 1 times [2022-01-10 19:32:28,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:28,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987140109] [2022-01-10 19:32:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:28,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:28,378 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 19:32:28,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:28,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987140109] [2022-01-10 19:32:28,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987140109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:28,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:28,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:32:28,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520310839] [2022-01-10 19:32:28,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:28,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:28,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:28,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:28,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:28,380 INFO L87 Difference]: Start difference. First operand 5408 states and 8210 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 19:32:28,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:28,623 INFO L93 Difference]: Finished difference Result 11514 states and 16083 transitions. [2022-01-10 19:32:28,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:28,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-10 19:32:28,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:28,640 INFO L225 Difference]: With dead ends: 11514 [2022-01-10 19:32:28,640 INFO L226 Difference]: Without dead ends: 8280 [2022-01-10 19:32:28,646 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 19:32:28,647 INFO L933 BasicCegarLoop]: 4477 mSDtfsCounter, 4317 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4317 SdHoareTripleChecker+Valid, 4874 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:32:28,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4317 Valid, 4874 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:28,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2022-01-10 19:32:28,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8100. [2022-01-10 19:32:28,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8100 states, 8097 states have (on average 1.4359639372607138) internal successors, (11627), 8099 states have internal predecessors, (11627), 0 states have call successors, (0), 0 states 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 19:32:28,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8100 states to 8100 states and 11627 transitions. [2022-01-10 19:32:28,981 INFO L78 Accepts]: Start accepts. Automaton has 8100 states and 11627 transitions. Word has length 107 [2022-01-10 19:32:28,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:28,982 INFO L470 AbstractCegarLoop]: Abstraction has 8100 states and 11627 transitions. [2022-01-10 19:32:28,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 19:32:28,982 INFO L276 IsEmpty]: Start isEmpty. Operand 8100 states and 11627 transitions. [2022-01-10 19:32:28,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 19:32:28,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:28,985 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] [2022-01-10 19:32:28,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 19:32:28,986 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:28,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:28,986 INFO L85 PathProgramCache]: Analyzing trace with hash -559026773, now seen corresponding path program 1 times [2022-01-10 19:32:28,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:28,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687358944] [2022-01-10 19:32:28,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:28,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:29,017 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 19:32:29,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:29,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687358944] [2022-01-10 19:32:29,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687358944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:29,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:29,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:32:29,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797589330] [2022-01-10 19:32:29,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:29,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:29,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:29,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:29,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:29,020 INFO L87 Difference]: Start difference. First operand 8100 states and 11627 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 19:32:29,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:29,261 INFO L93 Difference]: Finished difference Result 13997 states and 19200 transitions. [2022-01-10 19:32:29,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:29,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 107 [2022-01-10 19:32:29,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:29,277 INFO L225 Difference]: With dead ends: 13997 [2022-01-10 19:32:29,277 INFO L226 Difference]: Without dead ends: 8054 [2022-01-10 19:32:29,287 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 19:32:29,287 INFO L933 BasicCegarLoop]: 4380 mSDtfsCounter, 417 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 8338 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 19:32:29,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 8338 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:29,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8054 states. [2022-01-10 19:32:29,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8054 to 8054. [2022-01-10 19:32:29,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8054 states, 8051 states have (on average 1.4374611849459695) internal successors, (11573), 8053 states have internal predecessors, (11573), 0 states have call successors, (0), 0 states 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 19:32:29,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8054 states to 8054 states and 11573 transitions. [2022-01-10 19:32:29,547 INFO L78 Accepts]: Start accepts. Automaton has 8054 states and 11573 transitions. Word has length 107 [2022-01-10 19:32:29,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:29,547 INFO L470 AbstractCegarLoop]: Abstraction has 8054 states and 11573 transitions. [2022-01-10 19:32:29,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 19:32:29,548 INFO L276 IsEmpty]: Start isEmpty. Operand 8054 states and 11573 transitions. [2022-01-10 19:32:29,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 19:32:29,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:29,551 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] [2022-01-10 19:32:29,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 19:32:29,552 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:29,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:29,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1069271650, now seen corresponding path program 1 times [2022-01-10 19:32:29,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:29,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609469671] [2022-01-10 19:32:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:29,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:29,596 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 19:32:29,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:29,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609469671] [2022-01-10 19:32:29,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609469671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:29,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:29,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:32:29,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815839520] [2022-01-10 19:32:29,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:29,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:29,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:29,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:29,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:29,598 INFO L87 Difference]: Start difference. First operand 8054 states and 11573 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 19:32:29,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:29,998 INFO L93 Difference]: Finished difference Result 18867 states and 25404 transitions. [2022-01-10 19:32:29,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:29,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-10 19:32:29,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:30,028 INFO L225 Difference]: With dead ends: 18867 [2022-01-10 19:32:30,029 INFO L226 Difference]: Without dead ends: 12987 [2022-01-10 19:32:30,043 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 19:32:30,044 INFO L933 BasicCegarLoop]: 4449 mSDtfsCounter, 4316 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 4844 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 19:32:30,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4316 Valid, 4844 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:30,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12987 states. [2022-01-10 19:32:30,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12987 to 12855. [2022-01-10 19:32:30,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12855 states, 12852 states have (on average 1.3744164332399627) internal successors, (17664), 12854 states have internal predecessors, (17664), 0 states have call successors, (0), 0 states 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 19:32:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12855 states to 12855 states and 17664 transitions. [2022-01-10 19:32:30,640 INFO L78 Accepts]: Start accepts. Automaton has 12855 states and 17664 transitions. Word has length 108 [2022-01-10 19:32:30,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:30,640 INFO L470 AbstractCegarLoop]: Abstraction has 12855 states and 17664 transitions. [2022-01-10 19:32:30,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 19:32:30,641 INFO L276 IsEmpty]: Start isEmpty. Operand 12855 states and 17664 transitions. [2022-01-10 19:32:30,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 19:32:30,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:30,646 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] [2022-01-10 19:32:30,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 19:32:30,646 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:30,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:30,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1630234431, now seen corresponding path program 1 times [2022-01-10 19:32:30,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:30,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551301795] [2022-01-10 19:32:30,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:30,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:30,675 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 19:32:30,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:30,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551301795] [2022-01-10 19:32:30,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551301795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:30,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:30,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:32:30,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421646294] [2022-01-10 19:32:30,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:30,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:30,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:30,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:30,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:30,677 INFO L87 Difference]: Start difference. First operand 12855 states and 17664 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 19:32:31,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:31,177 INFO L93 Difference]: Finished difference Result 23501 states and 31268 transitions. [2022-01-10 19:32:31,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:31,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 108 [2022-01-10 19:32:31,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:31,205 INFO L225 Difference]: With dead ends: 23501 [2022-01-10 19:32:31,205 INFO L226 Difference]: Without dead ends: 12810 [2022-01-10 19:32:31,222 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 19:32:31,224 INFO L933 BasicCegarLoop]: 4379 mSDtfsCounter, 415 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 8337 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 19:32:31,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 8337 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12810 states. [2022-01-10 19:32:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12810 to 12810. [2022-01-10 19:32:31,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12810 states, 12807 states have (on average 1.3751854454595143) internal successors, (17612), 12809 states have internal predecessors, (17612), 0 states have call successors, (0), 0 states 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 19:32:31,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12810 states to 12810 states and 17612 transitions. [2022-01-10 19:32:31,736 INFO L78 Accepts]: Start accepts. Automaton has 12810 states and 17612 transitions. Word has length 108 [2022-01-10 19:32:31,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:31,737 INFO L470 AbstractCegarLoop]: Abstraction has 12810 states and 17612 transitions. [2022-01-10 19:32:31,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 19:32:31,737 INFO L276 IsEmpty]: Start isEmpty. Operand 12810 states and 17612 transitions. [2022-01-10 19:32:31,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 19:32:31,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:31,741 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] [2022-01-10 19:32:31,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 19:32:31,742 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:31,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:31,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2102120895, now seen corresponding path program 1 times [2022-01-10 19:32:31,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:31,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830688954] [2022-01-10 19:32:31,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:31,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:31,779 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 19:32:31,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:31,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830688954] [2022-01-10 19:32:31,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830688954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:31,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:31,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:32:31,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837114280] [2022-01-10 19:32:31,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:31,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:31,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:31,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:31,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:31,781 INFO L87 Difference]: Start difference. First operand 12810 states and 17612 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 19:32:32,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:32,547 INFO L93 Difference]: Finished difference Result 32670 states and 42820 transitions. [2022-01-10 19:32:32,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:32,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-01-10 19:32:32,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:32,591 INFO L225 Difference]: With dead ends: 32670 [2022-01-10 19:32:32,591 INFO L226 Difference]: Without dead ends: 22034 [2022-01-10 19:32:32,612 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 19:32:32,612 INFO L933 BasicCegarLoop]: 4718 mSDtfsCounter, 337 mSDsluCounter, 4359 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 9077 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:32:32,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 9077 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:32,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22034 states. [2022-01-10 19:32:33,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22034 to 22034. [2022-01-10 19:32:33,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22034 states, 22031 states have (on average 1.3149652762017157) internal successors, (28970), 22033 states have internal predecessors, (28970), 0 states have call successors, (0), 0 states 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 19:32:33,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22034 states to 22034 states and 28970 transitions. [2022-01-10 19:32:33,257 INFO L78 Accepts]: Start accepts. Automaton has 22034 states and 28970 transitions. Word has length 109 [2022-01-10 19:32:33,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:33,257 INFO L470 AbstractCegarLoop]: Abstraction has 22034 states and 28970 transitions. [2022-01-10 19:32:33,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 19:32:33,258 INFO L276 IsEmpty]: Start isEmpty. Operand 22034 states and 28970 transitions. [2022-01-10 19:32:33,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-10 19:32:33,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:33,273 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] [2022-01-10 19:32:33,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 19:32:33,273 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:33,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:33,274 INFO L85 PathProgramCache]: Analyzing trace with hash -213855212, now seen corresponding path program 1 times [2022-01-10 19:32:33,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:33,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816641489] [2022-01-10 19:32:33,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:33,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:33,324 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 19:32:33,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:33,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816641489] [2022-01-10 19:32:33,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816641489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:33,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:33,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:32:33,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612530051] [2022-01-10 19:32:33,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:33,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:33,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:33,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:33,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:33,325 INFO L87 Difference]: Start difference. First operand 22034 states and 28970 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 19:32:34,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:34,208 INFO L93 Difference]: Finished difference Result 50724 states and 64950 transitions. [2022-01-10 19:32:34,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:34,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-01-10 19:32:34,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:34,279 INFO L225 Difference]: With dead ends: 50724 [2022-01-10 19:32:34,279 INFO L226 Difference]: Without dead ends: 30868 [2022-01-10 19:32:34,313 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 19:32:34,314 INFO L933 BasicCegarLoop]: 4371 mSDtfsCounter, 4218 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4218 SdHoareTripleChecker+Valid, 4716 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:32:34,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4218 Valid, 4716 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:34,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30868 states. [2022-01-10 19:32:35,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30868 to 30736. [2022-01-10 19:32:35,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30736 states, 30733 states have (on average 1.2900139914749618) internal successors, (39646), 30735 states have internal predecessors, (39646), 0 states have call successors, (0), 0 states 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 19:32:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30736 states to 30736 states and 39646 transitions. [2022-01-10 19:32:35,442 INFO L78 Accepts]: Start accepts. Automaton has 30736 states and 39646 transitions. Word has length 140 [2022-01-10 19:32:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:35,443 INFO L470 AbstractCegarLoop]: Abstraction has 30736 states and 39646 transitions. [2022-01-10 19:32:35,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 19:32:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand 30736 states and 39646 transitions. [2022-01-10 19:32:35,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-10 19:32:35,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:35,464 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] [2022-01-10 19:32:35,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 19:32:35,464 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:35,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:35,465 INFO L85 PathProgramCache]: Analyzing trace with hash 647066896, now seen corresponding path program 1 times [2022-01-10 19:32:35,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:35,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274775757] [2022-01-10 19:32:35,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:35,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:35,507 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 19:32:35,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:35,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274775757] [2022-01-10 19:32:35,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274775757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:35,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:35,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:32:35,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867599388] [2022-01-10 19:32:35,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:35,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:35,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:35,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:35,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:35,509 INFO L87 Difference]: Start difference. First operand 30736 states and 39646 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 19:32:37,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:37,025 INFO L93 Difference]: Finished difference Result 72036 states and 91140 transitions. [2022-01-10 19:32:37,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:37,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-01-10 19:32:37,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:37,101 INFO L225 Difference]: With dead ends: 72036 [2022-01-10 19:32:37,102 INFO L226 Difference]: Without dead ends: 43490 [2022-01-10 19:32:37,145 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 19:32:37,145 INFO L933 BasicCegarLoop]: 4369 mSDtfsCounter, 4220 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4220 SdHoareTripleChecker+Valid, 4714 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:32:37,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4220 Valid, 4714 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:37,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43490 states. [2022-01-10 19:32:38,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43490 to 43294. [2022-01-10 19:32:38,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43294 states, 43291 states have (on average 1.2707953154235292) internal successors, (55014), 43293 states have internal predecessors, (55014), 0 states have call successors, (0), 0 states 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 19:32:38,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43294 states to 43294 states and 55014 transitions. [2022-01-10 19:32:38,512 INFO L78 Accepts]: Start accepts. Automaton has 43294 states and 55014 transitions. Word has length 140 [2022-01-10 19:32:38,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:38,513 INFO L470 AbstractCegarLoop]: Abstraction has 43294 states and 55014 transitions. [2022-01-10 19:32:38,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 19:32:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand 43294 states and 55014 transitions. [2022-01-10 19:32:38,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 19:32:38,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:38,547 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2022-01-10 19:32:38,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 19:32:38,547 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:38,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:38,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2029344296, now seen corresponding path program 1 times [2022-01-10 19:32:38,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:38,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839675613] [2022-01-10 19:32:38,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:38,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 19:32:38,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:38,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839675613] [2022-01-10 19:32:38,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839675613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:38,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:38,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:32:38,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462410142] [2022-01-10 19:32:38,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:38,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:38,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:38,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:38,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:38,589 INFO L87 Difference]: Start difference. First operand 43294 states and 55014 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 19:32:40,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:40,173 INFO L93 Difference]: Finished difference Result 75848 states and 95600 transitions. [2022-01-10 19:32:40,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:40,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 157 [2022-01-10 19:32:40,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:40,253 INFO L225 Difference]: With dead ends: 75848 [2022-01-10 19:32:40,254 INFO L226 Difference]: Without dead ends: 44146 [2022-01-10 19:32:40,301 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 19:32:40,304 INFO L933 BasicCegarLoop]: 4381 mSDtfsCounter, 4278 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4278 SdHoareTripleChecker+Valid, 4775 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:32:40,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4278 Valid, 4775 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:40,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44146 states. [2022-01-10 19:32:41,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44146 to 42574. [2022-01-10 19:32:41,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42574 states, 42571 states have (on average 1.2545159850602523) internal successors, (53406), 42573 states have internal predecessors, (53406), 0 states have call successors, (0), 0 states 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 19:32:41,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42574 states to 42574 states and 53406 transitions. [2022-01-10 19:32:41,922 INFO L78 Accepts]: Start accepts. Automaton has 42574 states and 53406 transitions. Word has length 157 [2022-01-10 19:32:41,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:41,922 INFO L470 AbstractCegarLoop]: Abstraction has 42574 states and 53406 transitions. [2022-01-10 19:32:41,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 19:32:41,923 INFO L276 IsEmpty]: Start isEmpty. Operand 42574 states and 53406 transitions. [2022-01-10 19:32:41,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 19:32:41,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:41,950 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-01-10 19:32:41,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 19:32:41,950 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:41,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:41,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1177354213, now seen corresponding path program 1 times [2022-01-10 19:32:41,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:41,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982041158] [2022-01-10 19:32:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:41,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:41,994 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 19:32:41,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:41,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982041158] [2022-01-10 19:32:41,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982041158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:41,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:41,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:32:41,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206860045] [2022-01-10 19:32:41,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:41,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:41,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:41,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:41,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:41,996 INFO L87 Difference]: Start difference. First operand 42574 states and 53406 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 19:32:43,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:43,620 INFO L93 Difference]: Finished difference Result 82934 states and 102750 transitions. [2022-01-10 19:32:43,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:43,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 158 [2022-01-10 19:32:43,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:43,675 INFO L225 Difference]: With dead ends: 82934 [2022-01-10 19:32:43,675 INFO L226 Difference]: Without dead ends: 42578 [2022-01-10 19:32:43,712 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 19:32:43,713 INFO L933 BasicCegarLoop]: 4657 mSDtfsCounter, 298 mSDsluCounter, 4344 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 9001 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:32:43,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 9001 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:43,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42578 states. [2022-01-10 19:32:45,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42578 to 42574. [2022-01-10 19:32:45,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42574 states, 42571 states have (on average 1.2460595240891688) internal successors, (53046), 42573 states have internal predecessors, (53046), 0 states have call successors, (0), 0 states 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 19:32:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42574 states to 42574 states and 53046 transitions. [2022-01-10 19:32:45,151 INFO L78 Accepts]: Start accepts. Automaton has 42574 states and 53046 transitions. Word has length 158 [2022-01-10 19:32:45,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:45,151 INFO L470 AbstractCegarLoop]: Abstraction has 42574 states and 53046 transitions. [2022-01-10 19:32:45,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 19:32:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 42574 states and 53046 transitions. [2022-01-10 19:32:45,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 19:32:45,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:45,172 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-01-10 19:32:45,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 19:32:45,172 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:45,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:45,173 INFO L85 PathProgramCache]: Analyzing trace with hash -2131487745, now seen corresponding path program 1 times [2022-01-10 19:32:45,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:45,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889162450] [2022-01-10 19:32:45,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:45,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:45,227 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:32:45,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:45,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889162450] [2022-01-10 19:32:45,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889162450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:45,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:45,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:32:45,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160933975] [2022-01-10 19:32:45,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:45,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:45,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:45,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:45,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:45,230 INFO L87 Difference]: Start difference. First operand 42574 states and 53046 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 19:32:46,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:46,683 INFO L93 Difference]: Finished difference Result 70638 states and 87354 transitions. [2022-01-10 19:32:46,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:46,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-01-10 19:32:46,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:46,740 INFO L225 Difference]: With dead ends: 70638 [2022-01-10 19:32:46,740 INFO L226 Difference]: Without dead ends: 42578 [2022-01-10 19:32:46,761 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 19:32:46,762 INFO L933 BasicCegarLoop]: 4666 mSDtfsCounter, 293 mSDsluCounter, 4350 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 9016 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:32:46,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 9016 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:46,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42578 states. [2022-01-10 19:32:48,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42578 to 42574. [2022-01-10 19:32:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42574 states, 42571 states have (on average 1.2421131756359964) internal successors, (52878), 42573 states have internal predecessors, (52878), 0 states have call successors, (0), 0 states 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 19:32:48,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42574 states to 42574 states and 52878 transitions. [2022-01-10 19:32:48,316 INFO L78 Accepts]: Start accepts. Automaton has 42574 states and 52878 transitions. Word has length 158 [2022-01-10 19:32:48,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:48,316 INFO L470 AbstractCegarLoop]: Abstraction has 42574 states and 52878 transitions. [2022-01-10 19:32:48,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 19:32:48,317 INFO L276 IsEmpty]: Start isEmpty. Operand 42574 states and 52878 transitions. [2022-01-10 19:32:48,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 19:32:48,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:48,335 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-01-10 19:32:48,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 19:32:48,335 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:48,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:48,336 INFO L85 PathProgramCache]: Analyzing trace with hash 737639735, now seen corresponding path program 1 times [2022-01-10 19:32:48,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:48,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78930426] [2022-01-10 19:32:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:48,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:48,378 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:32:48,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:48,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78930426] [2022-01-10 19:32:48,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78930426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:48,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:48,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:32:48,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786353634] [2022-01-10 19:32:48,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:48,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:48,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:48,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:48,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:48,380 INFO L87 Difference]: Start difference. First operand 42574 states and 52878 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 19:32:49,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:49,833 INFO L93 Difference]: Finished difference Result 70614 states and 87026 transitions. [2022-01-10 19:32:49,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:49,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-01-10 19:32:49,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:49,886 INFO L225 Difference]: With dead ends: 70614 [2022-01-10 19:32:49,886 INFO L226 Difference]: Without dead ends: 42578 [2022-01-10 19:32:49,911 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 19:32:49,912 INFO L933 BasicCegarLoop]: 4674 mSDtfsCounter, 293 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 9030 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:32:49,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 9030 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:49,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42578 states. [2022-01-10 19:32:51,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42578 to 42574. [2022-01-10 19:32:51,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42574 states, 42571 states have (on average 1.2392943553123017) internal successors, (52758), 42573 states have internal predecessors, (52758), 0 states have call successors, (0), 0 states 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 19:32:51,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42574 states to 42574 states and 52758 transitions. [2022-01-10 19:32:51,677 INFO L78 Accepts]: Start accepts. Automaton has 42574 states and 52758 transitions. Word has length 158 [2022-01-10 19:32:51,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:51,677 INFO L470 AbstractCegarLoop]: Abstraction has 42574 states and 52758 transitions. [2022-01-10 19:32:51,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 19:32:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 42574 states and 52758 transitions. [2022-01-10 19:32:51,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 19:32:51,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:51,698 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-01-10 19:32:51,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 19:32:51,698 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:51,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:51,699 INFO L85 PathProgramCache]: Analyzing trace with hash -343394932, now seen corresponding path program 1 times [2022-01-10 19:32:51,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:51,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414546232] [2022-01-10 19:32:51,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:51,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:51,744 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 19:32:51,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:51,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414546232] [2022-01-10 19:32:51,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414546232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:51,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:51,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:32:51,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334811533] [2022-01-10 19:32:51,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:51,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:51,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:51,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:51,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:51,746 INFO L87 Difference]: Start difference. First operand 42574 states and 52758 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 19:32:53,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:53,097 INFO L93 Difference]: Finished difference Result 66258 states and 81816 transitions. [2022-01-10 19:32:53,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:53,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 158 [2022-01-10 19:32:53,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:53,155 INFO L225 Difference]: With dead ends: 66258 [2022-01-10 19:32:53,155 INFO L226 Difference]: Without dead ends: 44434 [2022-01-10 19:32:53,183 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 19:32:53,184 INFO L933 BasicCegarLoop]: 4577 mSDtfsCounter, 347 mSDsluCounter, 4335 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 8912 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:32:53,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 8912 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:53,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44434 states. [2022-01-10 19:32:54,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44434 to 42574. [2022-01-10 19:32:54,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42574 states, 42571 states have (on average 1.2260458997909376) internal successors, (52194), 42573 states have internal predecessors, (52194), 0 states have call successors, (0), 0 states 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 19:32:54,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42574 states to 42574 states and 52194 transitions. [2022-01-10 19:32:54,965 INFO L78 Accepts]: Start accepts. Automaton has 42574 states and 52194 transitions. Word has length 158 [2022-01-10 19:32:54,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:54,965 INFO L470 AbstractCegarLoop]: Abstraction has 42574 states and 52194 transitions. [2022-01-10 19:32:54,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 19:32:54,965 INFO L276 IsEmpty]: Start isEmpty. Operand 42574 states and 52194 transitions. [2022-01-10 19:32:54,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 19:32:54,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:54,985 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-01-10 19:32:54,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 19:32:54,986 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:54,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:54,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1372551687, now seen corresponding path program 1 times [2022-01-10 19:32:54,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:54,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124923623] [2022-01-10 19:32:54,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:54,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:32:55,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:55,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124923623] [2022-01-10 19:32:55,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124923623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:55,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:55,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:32:55,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196399301] [2022-01-10 19:32:55,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:55,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:55,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:55,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:55,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:55,037 INFO L87 Difference]: Start difference. First operand 42574 states and 52194 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 19:32:56,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:56,580 INFO L93 Difference]: Finished difference Result 70806 states and 86022 transitions. [2022-01-10 19:32:56,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:56,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-01-10 19:32:56,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:56,633 INFO L225 Difference]: With dead ends: 70806 [2022-01-10 19:32:56,634 INFO L226 Difference]: Without dead ends: 42770 [2022-01-10 19:32:56,651 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 19:32:56,651 INFO L933 BasicCegarLoop]: 4662 mSDtfsCounter, 322 mSDsluCounter, 4308 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 8970 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:32:56,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 8970 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:56,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42770 states. [2022-01-10 19:32:58,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42770 to 42574. [2022-01-10 19:32:58,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42574 states, 42571 states have (on average 1.2087571351389443) internal successors, (51458), 42573 states have internal predecessors, (51458), 0 states have call successors, (0), 0 states 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 19:32:58,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42574 states to 42574 states and 51458 transitions. [2022-01-10 19:32:58,285 INFO L78 Accepts]: Start accepts. Automaton has 42574 states and 51458 transitions. Word has length 158 [2022-01-10 19:32:58,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:32:58,285 INFO L470 AbstractCegarLoop]: Abstraction has 42574 states and 51458 transitions. [2022-01-10 19:32:58,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 19:32:58,285 INFO L276 IsEmpty]: Start isEmpty. Operand 42574 states and 51458 transitions. [2022-01-10 19:32:58,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 19:32:58,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:32:58,303 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-01-10 19:32:58,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 19:32:58,304 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:32:58,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:32:58,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1280133448, now seen corresponding path program 1 times [2022-01-10 19:32:58,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:32:58,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067091741] [2022-01-10 19:32:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:32:58,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:32:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:32:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:32:58,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:32:58,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067091741] [2022-01-10 19:32:58,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067091741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:32:58,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:32:58,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:32:58,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061922472] [2022-01-10 19:32:58,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:32:58,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:32:58,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:32:58,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:32:58,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:32:58,352 INFO L87 Difference]: Start difference. First operand 42574 states and 51458 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 19:32:59,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:32:59,531 INFO L93 Difference]: Finished difference Result 73686 states and 88146 transitions. [2022-01-10 19:32:59,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:32:59,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2022-01-10 19:32:59,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:32:59,582 INFO L225 Difference]: With dead ends: 73686 [2022-01-10 19:32:59,582 INFO L226 Difference]: Without dead ends: 33330 [2022-01-10 19:32:59,612 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 19:32:59,613 INFO L933 BasicCegarLoop]: 4648 mSDtfsCounter, 296 mSDsluCounter, 4294 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 8942 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:32:59,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 8942 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:32:59,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33330 states. [2022-01-10 19:33:00,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33330 to 33182. [2022-01-10 19:33:01,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33182 states, 33179 states have (on average 1.2068477048735646) internal successors, (40042), 33181 states have internal predecessors, (40042), 0 states have call successors, (0), 0 states 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 19:33:01,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33182 states to 33182 states and 40042 transitions. [2022-01-10 19:33:01,070 INFO L78 Accepts]: Start accepts. Automaton has 33182 states and 40042 transitions. Word has length 159 [2022-01-10 19:33:01,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:33:01,070 INFO L470 AbstractCegarLoop]: Abstraction has 33182 states and 40042 transitions. [2022-01-10 19:33:01,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 19:33:01,070 INFO L276 IsEmpty]: Start isEmpty. Operand 33182 states and 40042 transitions. [2022-01-10 19:33:01,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 19:33:01,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:33:01,083 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-01-10 19:33:01,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 19:33:01,083 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:33:01,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:33:01,084 INFO L85 PathProgramCache]: Analyzing trace with hash -111634237, now seen corresponding path program 1 times [2022-01-10 19:33:01,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:33:01,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809071555] [2022-01-10 19:33:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:33:01,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:33:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:33:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:33:01,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:33:01,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809071555] [2022-01-10 19:33:01,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809071555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:33:01,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:33:01,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:33:01,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737253061] [2022-01-10 19:33:01,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:33:01,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:33:01,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:33:01,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:33:01,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:33:01,136 INFO L87 Difference]: Start difference. First operand 33182 states and 40042 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 19:33:02,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:33:02,521 INFO L93 Difference]: Finished difference Result 54842 states and 65334 transitions. [2022-01-10 19:33:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:33:02,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2022-01-10 19:33:02,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:33:02,561 INFO L225 Difference]: With dead ends: 54842 [2022-01-10 19:33:02,562 INFO L226 Difference]: Without dead ends: 33330 [2022-01-10 19:33:02,578 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 19:33:02,579 INFO L933 BasicCegarLoop]: 4650 mSDtfsCounter, 323 mSDsluCounter, 4299 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 8949 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:33:02,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 8949 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:33:02,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33330 states.