/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_label48+token_ring.05.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:35:05,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:35:05,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:35:05,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:35:05,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:35:05,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:35:05,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:35:05,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:35:05,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:35:05,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:35:05,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:35:05,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:35:05,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:35:05,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:35:05,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:35:05,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:35:05,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:35:05,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:35:05,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:35:05,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:35:05,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:35:05,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:35:05,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:35:05,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:35:05,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 19:35:05,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:35:05,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:35:05,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:35:05,843 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 19:35:05,858 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:35:05,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:35:05,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:35:05,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:35:05,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:35:05,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:35:05,862 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:35:05,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:35:05,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:35:05,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:35:05,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:35:05,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:35:05,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:35:05,864 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:35:05,864 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:35:05,864 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:35:05,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:35:05,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:35:05,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:35:05,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:35:05,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:35:05,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:35:05,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:35:05,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:35:05,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:35:05,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:35:05,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:35:05,866 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:35:05,866 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:35:05,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:35:05,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:35:05,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:35:05,867 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:35:05,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:35:06,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:35:06,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:35:06,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:35:06,120 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:35:06,121 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:35:06,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label48+token_ring.05.cil-1.c [2022-01-10 19:35:06,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c295d9bf5/fdd77a4be4cc472789cb118412406986/FLAG803426f29 [2022-01-10 19:35:06,952 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:35:06,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.05.cil-1.c [2022-01-10 19:35:07,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c295d9bf5/fdd77a4be4cc472789cb118412406986/FLAG803426f29 [2022-01-10 19:35:07,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c295d9bf5/fdd77a4be4cc472789cb118412406986 [2022-01-10 19:35:07,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:35:07,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:35:07,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:35:07,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:35:07,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:35:07,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:35:07" (1/1) ... [2022-01-10 19:35:07,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547a79d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:07, skipping insertion in model container [2022-01-10 19:35:07,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:35:07" (1/1) ... [2022-01-10 19:35:07,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:35:07,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:35:08,530 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_label48+token_ring.05.cil-1.c[375709,375722] [2022-01-10 19:35:08,555 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_label48+token_ring.05.cil-1.c[383339,383352] [2022-01-10 19:35:08,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:35:08,694 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:35:09,289 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_label48+token_ring.05.cil-1.c[375709,375722] [2022-01-10 19:35:09,296 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_label48+token_ring.05.cil-1.c[383339,383352] [2022-01-10 19:35:09,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:35:09,353 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:35:09,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:09 WrapperNode [2022-01-10 19:35:09,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:35:09,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:35:09,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:35:09,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:35:09,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:09" (1/1) ... [2022-01-10 19:35:09,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:09" (1/1) ... [2022-01-10 19:35:09,739 INFO L137 Inliner]: procedures = 55, calls = 56, calls flagged for inlining = 51, calls inlined = 104, statements flattened = 13676 [2022-01-10 19:35:09,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:35:09,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:35:09,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:35:09,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:35:09,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:09" (1/1) ... [2022-01-10 19:35:09,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:09" (1/1) ... [2022-01-10 19:35:09,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:09" (1/1) ... [2022-01-10 19:35:09,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:09" (1/1) ... [2022-01-10 19:35:09,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:09" (1/1) ... [2022-01-10 19:35:10,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:09" (1/1) ... [2022-01-10 19:35:10,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:09" (1/1) ... [2022-01-10 19:35:10,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:35:10,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:35:10,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:35:10,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:35:10,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:09" (1/1) ... [2022-01-10 19:35:10,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:35:10,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:35:10,158 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 19:35:10,177 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 19:35:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:35:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:35:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:35:10,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:35:10,333 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:35:10,334 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:35:16,454 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:35:16,495 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:35:16,496 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-01-10 19:35:16,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:35:16 BoogieIcfgContainer [2022-01-10 19:35:16,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:35:16,506 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:35:16,507 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:35:16,510 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:35:16,512 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:35:16" (1/1) ... [2022-01-10 19:35:18,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:35:18 BasicIcfg [2022-01-10 19:35:18,041 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:35:18,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:35:18,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:35:18,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:35:18,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:35:07" (1/4) ... [2022-01-10 19:35:18,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169cf866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:35:18, skipping insertion in model container [2022-01-10 19:35:18,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:35:09" (2/4) ... [2022-01-10 19:35:18,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169cf866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:35:18, skipping insertion in model container [2022-01-10 19:35:18,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:35:16" (3/4) ... [2022-01-10 19:35:18,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169cf866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:35:18, skipping insertion in model container [2022-01-10 19:35:18,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:35:18" (4/4) ... [2022-01-10 19:35:18,048 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.05.cil-1.cTransformedIcfg [2022-01-10 19:35:18,052 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:35:18,052 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 19:35:18,102 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:35:18,108 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 19:35:18,109 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 19:35:18,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 2736 states, 2733 states have (on average 1.8027808269301133) internal successors, (4927), 2735 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states 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 19:35:18,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 19:35:18,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:18,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:18,328 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:18,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:18,337 INFO L85 PathProgramCache]: Analyzing trace with hash -403323338, now seen corresponding path program 1 times [2022-01-10 19:35:18,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:18,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535750841] [2022-01-10 19:35:18,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:18,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:18,584 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 19:35:18,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:18,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535750841] [2022-01-10 19:35:18,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535750841] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:18,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:18,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:18,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856564547] [2022-01-10 19:35:18,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:18,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:18,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:18,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:18,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:18,632 INFO L87 Difference]: Start difference. First operand has 2736 states, 2733 states have (on average 1.8027808269301133) internal successors, (4927), 2735 states have internal predecessors, (4927), 0 states have call successors, (0), 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 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:18,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:18,786 INFO L93 Difference]: Finished difference Result 5888 states and 10485 transitions. [2022-01-10 19:35:18,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:18,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 19:35:18,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:18,806 INFO L225 Difference]: With dead ends: 5888 [2022-01-10 19:35:18,806 INFO L226 Difference]: Without dead ends: 3094 [2022-01-10 19:35:18,816 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 19:35:18,818 INFO L933 BasicCegarLoop]: 4840 mSDtfsCounter, 4766 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4766 SdHoareTripleChecker+Valid, 5532 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 19:35:18,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4766 Valid, 5532 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:18,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2022-01-10 19:35:18,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 3092. [2022-01-10 19:35:18,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.749190938511327) internal successors, (5405), 3091 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states 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 19:35:18,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5405 transitions. [2022-01-10 19:35:18,966 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5405 transitions. Word has length 88 [2022-01-10 19:35:18,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:18,966 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5405 transitions. [2022-01-10 19:35:18,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:18,968 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5405 transitions. [2022-01-10 19:35:18,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 19:35:18,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:18,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:18,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:35:18,976 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:18,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:18,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1667105878, now seen corresponding path program 1 times [2022-01-10 19:35:18,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:18,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106934036] [2022-01-10 19:35:18,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:18,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:19,077 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 19:35:19,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:19,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106934036] [2022-01-10 19:35:19,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106934036] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:19,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:19,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:19,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021713096] [2022-01-10 19:35:19,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:19,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:19,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:19,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:19,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:19,081 INFO L87 Difference]: Start difference. First operand 3092 states and 5405 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:19,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:19,143 INFO L93 Difference]: Finished difference Result 4050 states and 6832 transitions. [2022-01-10 19:35:19,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:19,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 19:35:19,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:19,152 INFO L225 Difference]: With dead ends: 4050 [2022-01-10 19:35:19,153 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 19:35:19,156 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 19:35:19,157 INFO L933 BasicCegarLoop]: 4767 mSDtfsCounter, 4759 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 4767 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 19:35:19,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 4767 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:19,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 19:35:19,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 19:35:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7466019417475729) internal successors, (5397), 3091 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states 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 19:35:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5397 transitions. [2022-01-10 19:35:19,209 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5397 transitions. Word has length 88 [2022-01-10 19:35:19,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:19,210 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5397 transitions. [2022-01-10 19:35:19,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:19,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5397 transitions. [2022-01-10 19:35:19,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 19:35:19,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:19,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:19,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:35:19,214 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:19,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:19,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1729789386, now seen corresponding path program 1 times [2022-01-10 19:35:19,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:19,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079005052] [2022-01-10 19:35:19,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:19,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:19,249 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 19:35:19,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:19,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079005052] [2022-01-10 19:35:19,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079005052] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:19,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:19,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:19,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154164192] [2022-01-10 19:35:19,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:19,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:19,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:19,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:19,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:19,251 INFO L87 Difference]: Start difference. First operand 3092 states and 5397 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:19,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:19,296 INFO L93 Difference]: Finished difference Result 4049 states and 6815 transitions. [2022-01-10 19:35:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:19,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 19:35:19,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:19,305 INFO L225 Difference]: With dead ends: 4049 [2022-01-10 19:35:19,305 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 19:35:19,307 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 19:35:19,307 INFO L933 BasicCegarLoop]: 4762 mSDtfsCounter, 4753 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4753 SdHoareTripleChecker+Valid, 4762 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 19:35:19,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4753 Valid, 4762 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:19,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 19:35:19,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 19:35:19,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7440129449838189) internal successors, (5389), 3091 states have internal predecessors, (5389), 0 states have call successors, (0), 0 states 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 19:35:19,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5389 transitions. [2022-01-10 19:35:19,362 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5389 transitions. Word has length 88 [2022-01-10 19:35:19,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:19,364 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5389 transitions. [2022-01-10 19:35:19,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:19,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5389 transitions. [2022-01-10 19:35:19,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 19:35:19,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:19,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:19,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:35:19,365 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:19,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:19,366 INFO L85 PathProgramCache]: Analyzing trace with hash 931579990, now seen corresponding path program 1 times [2022-01-10 19:35:19,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:19,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202865105] [2022-01-10 19:35:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:19,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:19,427 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 19:35:19,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:19,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202865105] [2022-01-10 19:35:19,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202865105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:19,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:19,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:19,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190088801] [2022-01-10 19:35:19,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:19,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:19,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:19,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:19,429 INFO L87 Difference]: Start difference. First operand 3092 states and 5389 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:19,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:19,480 INFO L93 Difference]: Finished difference Result 4048 states and 6798 transitions. [2022-01-10 19:35:19,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:19,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 19:35:19,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:19,490 INFO L225 Difference]: With dead ends: 4048 [2022-01-10 19:35:19,490 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 19:35:19,492 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 19:35:19,499 INFO L933 BasicCegarLoop]: 4757 mSDtfsCounter, 4747 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 4757 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 19:35:19,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4747 Valid, 4757 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:19,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 19:35:19,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 19:35:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7414239482200646) internal successors, (5381), 3091 states have internal predecessors, (5381), 0 states have call successors, (0), 0 states 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 19:35:19,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5381 transitions. [2022-01-10 19:35:19,561 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5381 transitions. Word has length 88 [2022-01-10 19:35:19,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:19,561 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5381 transitions. [2022-01-10 19:35:19,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:19,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5381 transitions. [2022-01-10 19:35:19,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 19:35:19,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:19,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:19,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:35:19,563 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:19,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:19,564 INFO L85 PathProgramCache]: Analyzing trace with hash -90948042, now seen corresponding path program 1 times [2022-01-10 19:35:19,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:19,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58170787] [2022-01-10 19:35:19,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:19,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:19,627 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 19:35:19,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:19,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58170787] [2022-01-10 19:35:19,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58170787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:19,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:19,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:19,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274045228] [2022-01-10 19:35:19,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:19,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:19,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:19,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:19,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:19,630 INFO L87 Difference]: Start difference. First operand 3092 states and 5381 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:19,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:19,683 INFO L93 Difference]: Finished difference Result 4047 states and 6781 transitions. [2022-01-10 19:35:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:19,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 19:35:19,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:19,693 INFO L225 Difference]: With dead ends: 4047 [2022-01-10 19:35:19,693 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 19:35:19,696 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 19:35:19,698 INFO L933 BasicCegarLoop]: 4752 mSDtfsCounter, 4741 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4741 SdHoareTripleChecker+Valid, 4752 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 19:35:19,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4741 Valid, 4752 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:19,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 19:35:19,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 19:35:19,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7388349514563106) internal successors, (5373), 3091 states have internal predecessors, (5373), 0 states have call successors, (0), 0 states 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 19:35:19,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5373 transitions. [2022-01-10 19:35:19,759 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5373 transitions. Word has length 88 [2022-01-10 19:35:19,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:19,762 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5373 transitions. [2022-01-10 19:35:19,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:19,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5373 transitions. [2022-01-10 19:35:19,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 19:35:19,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:19,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:19,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:35:19,768 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:19,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:19,768 INFO L85 PathProgramCache]: Analyzing trace with hash -955216810, now seen corresponding path program 1 times [2022-01-10 19:35:19,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:19,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15353875] [2022-01-10 19:35:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:19,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:19,808 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 19:35:19,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:19,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15353875] [2022-01-10 19:35:19,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15353875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:19,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:19,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:19,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504955984] [2022-01-10 19:35:19,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:19,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:19,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:19,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:19,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:19,810 INFO L87 Difference]: Start difference. First operand 3092 states and 5373 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:20,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:20,032 INFO L93 Difference]: Finished difference Result 4046 states and 6764 transitions. [2022-01-10 19:35:20,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:20,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 19:35:20,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:20,040 INFO L225 Difference]: With dead ends: 4046 [2022-01-10 19:35:20,041 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 19:35:20,042 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 19:35:20,042 INFO L933 BasicCegarLoop]: 4747 mSDtfsCounter, 4735 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4735 SdHoareTripleChecker+Valid, 4747 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 19:35:20,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4735 Valid, 4747 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:20,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 19:35:20,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 19:35:20,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7362459546925566) internal successors, (5365), 3091 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:35:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5365 transitions. [2022-01-10 19:35:20,093 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5365 transitions. Word has length 88 [2022-01-10 19:35:20,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:20,094 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5365 transitions. [2022-01-10 19:35:20,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:20,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5365 transitions. [2022-01-10 19:35:20,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 19:35:20,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:20,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:20,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:35:20,095 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:20,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:20,095 INFO L85 PathProgramCache]: Analyzing trace with hash 818018870, now seen corresponding path program 1 times [2022-01-10 19:35:20,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:20,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209033255] [2022-01-10 19:35:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:20,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:20,121 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 19:35:20,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:20,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209033255] [2022-01-10 19:35:20,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209033255] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:20,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:20,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:20,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399717063] [2022-01-10 19:35:20,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:20,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:20,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:20,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:20,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:20,123 INFO L87 Difference]: Start difference. First operand 3092 states and 5365 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:20,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:20,206 INFO L93 Difference]: Finished difference Result 4045 states and 6747 transitions. [2022-01-10 19:35:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:20,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 19:35:20,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:20,215 INFO L225 Difference]: With dead ends: 4045 [2022-01-10 19:35:20,215 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 19:35:20,217 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 19:35:20,218 INFO L933 BasicCegarLoop]: 4726 mSDtfsCounter, 4659 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4659 SdHoareTripleChecker+Valid, 4784 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:20,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4659 Valid, 4784 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:20,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 19:35:20,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 19:35:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.729126213592233) internal successors, (5343), 3091 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states 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 19:35:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5343 transitions. [2022-01-10 19:35:20,290 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5343 transitions. Word has length 88 [2022-01-10 19:35:20,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:20,291 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5343 transitions. [2022-01-10 19:35:20,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:20,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5343 transitions. [2022-01-10 19:35:20,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 19:35:20,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:20,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:20,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:35:20,293 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:20,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:20,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1840794667, now seen corresponding path program 1 times [2022-01-10 19:35:20,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:20,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687412236] [2022-01-10 19:35:20,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:20,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:20,332 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 19:35:20,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:20,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687412236] [2022-01-10 19:35:20,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687412236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:20,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:20,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:20,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219792062] [2022-01-10 19:35:20,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:20,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:20,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:20,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:20,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:20,334 INFO L87 Difference]: Start difference. First operand 3092 states and 5343 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:20,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:20,399 INFO L93 Difference]: Finished difference Result 4044 states and 6702 transitions. [2022-01-10 19:35:20,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:20,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 19:35:20,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:20,420 INFO L225 Difference]: With dead ends: 4044 [2022-01-10 19:35:20,420 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 19:35:20,422 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 19:35:20,422 INFO L933 BasicCegarLoop]: 4713 mSDtfsCounter, 4646 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4646 SdHoareTripleChecker+Valid, 4770 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:20,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4646 Valid, 4770 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:20,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 19:35:20,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 19:35:20,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7220064724919093) internal successors, (5321), 3091 states have internal predecessors, (5321), 0 states have call successors, (0), 0 states 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 19:35:20,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5321 transitions. [2022-01-10 19:35:20,471 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5321 transitions. Word has length 88 [2022-01-10 19:35:20,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:20,471 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5321 transitions. [2022-01-10 19:35:20,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:20,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5321 transitions. [2022-01-10 19:35:20,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 19:35:20,472 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:20,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:20,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:35:20,473 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:20,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:20,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1824798604, now seen corresponding path program 1 times [2022-01-10 19:35:20,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:20,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476937696] [2022-01-10 19:35:20,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:20,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:20,495 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 19:35:20,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:20,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476937696] [2022-01-10 19:35:20,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476937696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:20,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:20,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:20,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995037438] [2022-01-10 19:35:20,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:20,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:20,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:20,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:20,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:20,496 INFO L87 Difference]: Start difference. First operand 3092 states and 5321 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:20,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:20,568 INFO L93 Difference]: Finished difference Result 4043 states and 6657 transitions. [2022-01-10 19:35:20,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:20,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 19:35:20,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:20,573 INFO L225 Difference]: With dead ends: 4043 [2022-01-10 19:35:20,573 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 19:35:20,574 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 19:35:20,575 INFO L933 BasicCegarLoop]: 4700 mSDtfsCounter, 4633 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4633 SdHoareTripleChecker+Valid, 4756 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:20,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4633 Valid, 4756 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:20,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 19:35:20,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 19:35:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7148867313915857) internal successors, (5299), 3091 states have internal predecessors, (5299), 0 states have call successors, (0), 0 states 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 19:35:20,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5299 transitions. [2022-01-10 19:35:20,625 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5299 transitions. Word has length 88 [2022-01-10 19:35:20,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:20,625 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5299 transitions. [2022-01-10 19:35:20,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5299 transitions. [2022-01-10 19:35:20,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 19:35:20,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:20,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:20,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:35:20,626 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:20,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:20,626 INFO L85 PathProgramCache]: Analyzing trace with hash 607293587, now seen corresponding path program 1 times [2022-01-10 19:35:20,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:20,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385958786] [2022-01-10 19:35:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:20,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:20,647 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 19:35:20,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:20,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385958786] [2022-01-10 19:35:20,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385958786] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:20,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:20,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:20,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390908491] [2022-01-10 19:35:20,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:20,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:20,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:20,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:20,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:20,648 INFO L87 Difference]: Start difference. First operand 3092 states and 5299 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:20,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:20,708 INFO L93 Difference]: Finished difference Result 4042 states and 6612 transitions. [2022-01-10 19:35:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:20,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 19:35:20,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:20,712 INFO L225 Difference]: With dead ends: 4042 [2022-01-10 19:35:20,712 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 19:35:20,714 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 19:35:20,714 INFO L933 BasicCegarLoop]: 4687 mSDtfsCounter, 4620 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4620 SdHoareTripleChecker+Valid, 4742 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:20,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4620 Valid, 4742 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:20,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 19:35:20,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 19:35:20,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7077669902912622) internal successors, (5277), 3091 states have internal predecessors, (5277), 0 states have call successors, (0), 0 states 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 19:35:20,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5277 transitions. [2022-01-10 19:35:20,828 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5277 transitions. Word has length 88 [2022-01-10 19:35:20,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:20,828 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5277 transitions. [2022-01-10 19:35:20,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:20,829 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5277 transitions. [2022-01-10 19:35:20,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 19:35:20,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:20,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:20,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:35:20,829 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:20,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:20,830 INFO L85 PathProgramCache]: Analyzing trace with hash -453016654, now seen corresponding path program 1 times [2022-01-10 19:35:20,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:20,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064571159] [2022-01-10 19:35:20,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:20,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:20,851 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 19:35:20,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:20,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064571159] [2022-01-10 19:35:20,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064571159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:20,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:20,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:20,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312294879] [2022-01-10 19:35:20,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:20,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:20,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:20,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:20,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:20,852 INFO L87 Difference]: Start difference. First operand 3092 states and 5277 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:20,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:20,913 INFO L93 Difference]: Finished difference Result 4040 states and 6565 transitions. [2022-01-10 19:35:20,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:20,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 19:35:20,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:20,918 INFO L225 Difference]: With dead ends: 4040 [2022-01-10 19:35:20,918 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 19:35:20,919 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 19:35:20,920 INFO L933 BasicCegarLoop]: 4674 mSDtfsCounter, 4606 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4606 SdHoareTripleChecker+Valid, 4728 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:20,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4606 Valid, 4728 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 19:35:20,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 19:35:20,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7006472491909386) internal successors, (5255), 3091 states have internal predecessors, (5255), 0 states have call successors, (0), 0 states 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 19:35:20,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5255 transitions. [2022-01-10 19:35:20,967 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5255 transitions. Word has length 88 [2022-01-10 19:35:20,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:20,967 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5255 transitions. [2022-01-10 19:35:20,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:20,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5255 transitions. [2022-01-10 19:35:20,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 19:35:20,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:20,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:20,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 19:35:20,968 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:20,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:20,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1568074415, now seen corresponding path program 1 times [2022-01-10 19:35:20,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:20,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948375066] [2022-01-10 19:35:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:20,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:21,009 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 19:35:21,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:21,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948375066] [2022-01-10 19:35:21,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948375066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:21,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:21,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:35:21,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182697511] [2022-01-10 19:35:21,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:21,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:35:21,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:21,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:35:21,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:35:21,011 INFO L87 Difference]: Start difference. First operand 3092 states and 5255 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:21,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:21,171 INFO L93 Difference]: Finished difference Result 4550 states and 7228 transitions. [2022-01-10 19:35:21,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:35:21,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 19:35:21,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:21,177 INFO L225 Difference]: With dead ends: 4550 [2022-01-10 19:35:21,177 INFO L226 Difference]: Without dead ends: 3616 [2022-01-10 19:35:21,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:35:21,179 INFO L933 BasicCegarLoop]: 4735 mSDtfsCounter, 1905 mSDsluCounter, 13018 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 17753 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:21,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1905 Valid, 17753 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:35:21,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2022-01-10 19:35:21,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 3098. [2022-01-10 19:35:21,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 3096 states have (on average 1.694767441860465) internal successors, (5247), 3097 states have internal predecessors, (5247), 0 states have call successors, (0), 0 states 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 19:35:21,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 5247 transitions. [2022-01-10 19:35:21,237 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 5247 transitions. Word has length 88 [2022-01-10 19:35:21,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:21,238 INFO L470 AbstractCegarLoop]: Abstraction has 3098 states and 5247 transitions. [2022-01-10 19:35:21,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:21,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 5247 transitions. [2022-01-10 19:35:21,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 19:35:21,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:21,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:21,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 19:35:21,239 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:21,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:21,239 INFO L85 PathProgramCache]: Analyzing trace with hash 801359570, now seen corresponding path program 1 times [2022-01-10 19:35:21,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:21,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732159023] [2022-01-10 19:35:21,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:21,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:21,264 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 19:35:21,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:21,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732159023] [2022-01-10 19:35:21,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732159023] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:21,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:21,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:21,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079435240] [2022-01-10 19:35:21,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:21,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:21,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:21,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:21,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:21,265 INFO L87 Difference]: Start difference. First operand 3098 states and 5247 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:21,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:21,364 INFO L93 Difference]: Finished difference Result 4814 states and 7510 transitions. [2022-01-10 19:35:21,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:21,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 19:35:21,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:21,370 INFO L225 Difference]: With dead ends: 4814 [2022-01-10 19:35:21,371 INFO L226 Difference]: Without dead ends: 3890 [2022-01-10 19:35:21,373 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 19:35:21,373 INFO L933 BasicCegarLoop]: 4667 mSDtfsCounter, 4544 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4544 SdHoareTripleChecker+Valid, 5268 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:21,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4544 Valid, 5268 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:21,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2022-01-10 19:35:21,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 3884. [2022-01-10 19:35:21,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3882 states have (on average 1.6146316331787738) internal successors, (6268), 3883 states have internal predecessors, (6268), 0 states have call successors, (0), 0 states 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 19:35:21,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 6268 transitions. [2022-01-10 19:35:21,463 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 6268 transitions. Word has length 88 [2022-01-10 19:35:21,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:21,463 INFO L470 AbstractCegarLoop]: Abstraction has 3884 states and 6268 transitions. [2022-01-10 19:35:21,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:21,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 6268 transitions. [2022-01-10 19:35:21,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 19:35:21,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:21,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:21,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 19:35:21,465 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:21,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:21,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1150683311, now seen corresponding path program 1 times [2022-01-10 19:35:21,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:21,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712433583] [2022-01-10 19:35:21,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:21,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:21,530 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 19:35:21,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:21,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712433583] [2022-01-10 19:35:21,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712433583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:21,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:21,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:21,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520726681] [2022-01-10 19:35:21,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:21,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:21,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:21,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:21,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:21,532 INFO L87 Difference]: Start difference. First operand 3884 states and 6268 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:21,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:21,663 INFO L93 Difference]: Finished difference Result 5625 states and 8549 transitions. [2022-01-10 19:35:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:21,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 19:35:21,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:21,668 INFO L225 Difference]: With dead ends: 5625 [2022-01-10 19:35:21,669 INFO L226 Difference]: Without dead ends: 3884 [2022-01-10 19:35:21,671 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 19:35:21,671 INFO L933 BasicCegarLoop]: 4652 mSDtfsCounter, 4537 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4537 SdHoareTripleChecker+Valid, 4704 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:21,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4537 Valid, 4704 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:21,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2022-01-10 19:35:21,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 3884. [2022-01-10 19:35:21,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3882 states have (on average 1.6076764554353427) internal successors, (6241), 3883 states have internal predecessors, (6241), 0 states have call successors, (0), 0 states 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 19:35:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 6241 transitions. [2022-01-10 19:35:21,791 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 6241 transitions. Word has length 88 [2022-01-10 19:35:21,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:21,791 INFO L470 AbstractCegarLoop]: Abstraction has 3884 states and 6241 transitions. [2022-01-10 19:35:21,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:21,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 6241 transitions. [2022-01-10 19:35:21,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 19:35:21,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:21,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:21,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 19:35:21,792 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:21,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:21,793 INFO L85 PathProgramCache]: Analyzing trace with hash 202626386, now seen corresponding path program 1 times [2022-01-10 19:35:21,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:21,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694818856] [2022-01-10 19:35:21,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:21,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:21,824 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 19:35:21,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:21,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694818856] [2022-01-10 19:35:21,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694818856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:21,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:21,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:35:21,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092291918] [2022-01-10 19:35:21,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:21,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:21,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:21,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:21,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:21,826 INFO L87 Difference]: Start difference. First operand 3884 states and 6241 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:22,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:22,055 INFO L93 Difference]: Finished difference Result 7264 states and 10627 transitions. [2022-01-10 19:35:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:22,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 19:35:22,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:22,064 INFO L225 Difference]: With dead ends: 7264 [2022-01-10 19:35:22,064 INFO L226 Difference]: Without dead ends: 5526 [2022-01-10 19:35:22,067 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 19:35:22,067 INFO L933 BasicCegarLoop]: 4652 mSDtfsCounter, 4553 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4553 SdHoareTripleChecker+Valid, 5243 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:22,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4553 Valid, 5243 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:22,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2022-01-10 19:35:22,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 5352. [2022-01-10 19:35:22,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5352 states, 5350 states have (on average 1.5183177570093458) internal successors, (8123), 5351 states have internal predecessors, (8123), 0 states have call successors, (0), 0 states 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 19:35:22,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5352 states to 5352 states and 8123 transitions. [2022-01-10 19:35:22,273 INFO L78 Accepts]: Start accepts. Automaton has 5352 states and 8123 transitions. Word has length 88 [2022-01-10 19:35:22,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:22,274 INFO L470 AbstractCegarLoop]: Abstraction has 5352 states and 8123 transitions. [2022-01-10 19:35:22,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 19:35:22,274 INFO L276 IsEmpty]: Start isEmpty. Operand 5352 states and 8123 transitions. [2022-01-10 19:35:22,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 19:35:22,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:22,276 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:22,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 19:35:22,276 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:22,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:22,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1976268602, now seen corresponding path program 1 times [2022-01-10 19:35:22,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:22,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484705532] [2022-01-10 19:35:22,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:22,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:22,313 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 19:35:22,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:22,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484705532] [2022-01-10 19:35:22,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484705532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:22,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:22,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:35:22,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632128658] [2022-01-10 19:35:22,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:22,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:22,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:22,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:22,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:22,315 INFO L87 Difference]: Start difference. First operand 5352 states and 8123 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 19:35:22,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:22,677 INFO L93 Difference]: Finished difference Result 11565 states and 16153 transitions. [2022-01-10 19:35:22,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:22,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-10 19:35:22,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:22,689 INFO L225 Difference]: With dead ends: 11565 [2022-01-10 19:35:22,689 INFO L226 Difference]: Without dead ends: 8365 [2022-01-10 19:35:22,693 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 19:35:22,694 INFO L933 BasicCegarLoop]: 4649 mSDtfsCounter, 4565 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4565 SdHoareTripleChecker+Valid, 5240 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:22,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4565 Valid, 5240 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:22,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8365 states. [2022-01-10 19:35:22,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8365 to 8079. [2022-01-10 19:35:22,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8079 states, 8077 states have (on average 1.4387767735545376) internal successors, (11621), 8078 states have internal predecessors, (11621), 0 states have call successors, (0), 0 states 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 19:35:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8079 states to 8079 states and 11621 transitions. [2022-01-10 19:35:22,998 INFO L78 Accepts]: Start accepts. Automaton has 8079 states and 11621 transitions. Word has length 142 [2022-01-10 19:35:22,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:22,998 INFO L470 AbstractCegarLoop]: Abstraction has 8079 states and 11621 transitions. [2022-01-10 19:35:22,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 19:35:22,998 INFO L276 IsEmpty]: Start isEmpty. Operand 8079 states and 11621 transitions. [2022-01-10 19:35:23,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 19:35:23,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:23,002 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:23,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 19:35:23,002 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:23,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2088036486, now seen corresponding path program 1 times [2022-01-10 19:35:23,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:23,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790612800] [2022-01-10 19:35:23,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:23,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:23,041 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 19:35:23,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:23,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790612800] [2022-01-10 19:35:23,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790612800] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:23,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:23,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:35:23,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375340726] [2022-01-10 19:35:23,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:23,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:23,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:23,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:23,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:23,042 INFO L87 Difference]: Start difference. First operand 8079 states and 11621 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 19:35:23,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:23,480 INFO L93 Difference]: Finished difference Result 19305 states and 25921 transitions. [2022-01-10 19:35:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:23,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-10 19:35:23,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:23,503 INFO L225 Difference]: With dead ends: 19305 [2022-01-10 19:35:23,503 INFO L226 Difference]: Without dead ends: 13423 [2022-01-10 19:35:23,513 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 19:35:23,513 INFO L933 BasicCegarLoop]: 4950 mSDtfsCounter, 4446 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4446 SdHoareTripleChecker+Valid, 5632 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:23,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4446 Valid, 5632 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:23,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13423 states. [2022-01-10 19:35:23,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13423 to 13421. [2022-01-10 19:35:24,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13421 states, 13419 states have (on average 1.3624711230345032) internal successors, (18283), 13420 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states 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 19:35:24,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13421 states to 13421 states and 18283 transitions. [2022-01-10 19:35:24,024 INFO L78 Accepts]: Start accepts. Automaton has 13421 states and 18283 transitions. Word has length 142 [2022-01-10 19:35:24,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:24,024 INFO L470 AbstractCegarLoop]: Abstraction has 13421 states and 18283 transitions. [2022-01-10 19:35:24,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 19:35:24,024 INFO L276 IsEmpty]: Start isEmpty. Operand 13421 states and 18283 transitions. [2022-01-10 19:35:24,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 19:35:24,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:24,029 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:24,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 19:35:24,029 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:24,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:24,030 INFO L85 PathProgramCache]: Analyzing trace with hash 268391513, now seen corresponding path program 1 times [2022-01-10 19:35:24,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:24,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174575575] [2022-01-10 19:35:24,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:24,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:24,053 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 19:35:24,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:24,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174575575] [2022-01-10 19:35:24,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174575575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:24,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:24,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:35:24,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822139097] [2022-01-10 19:35:24,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:24,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:24,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:24,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:24,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:24,054 INFO L87 Difference]: Start difference. First operand 13421 states and 18283 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 19:35:24,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:24,477 INFO L93 Difference]: Finished difference Result 24575 states and 32436 transitions. [2022-01-10 19:35:24,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:24,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 142 [2022-01-10 19:35:24,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:24,497 INFO L225 Difference]: With dead ends: 24575 [2022-01-10 19:35:24,497 INFO L226 Difference]: Without dead ends: 13351 [2022-01-10 19:35:24,507 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 19:35:24,508 INFO L933 BasicCegarLoop]: 4658 mSDtfsCounter, 696 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 8616 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 19:35:24,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 8616 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:24,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13351 states. [2022-01-10 19:35:24,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13351 to 13351. [2022-01-10 19:35:24,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13351 states, 13349 states have (on average 1.3633980073413738) internal successors, (18200), 13350 states have internal predecessors, (18200), 0 states have call successors, (0), 0 states 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 19:35:24,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13351 states to 13351 states and 18200 transitions. [2022-01-10 19:35:24,959 INFO L78 Accepts]: Start accepts. Automaton has 13351 states and 18200 transitions. Word has length 142 [2022-01-10 19:35:24,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:24,959 INFO L470 AbstractCegarLoop]: Abstraction has 13351 states and 18200 transitions. [2022-01-10 19:35:24,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 19:35:24,959 INFO L276 IsEmpty]: Start isEmpty. Operand 13351 states and 18200 transitions. [2022-01-10 19:35:24,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 19:35:24,963 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:24,963 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:24,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 19:35:24,964 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:24,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:24,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1631061953, now seen corresponding path program 1 times [2022-01-10 19:35:24,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:24,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964191971] [2022-01-10 19:35:24,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:24,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:24,997 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 19:35:24,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:24,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964191971] [2022-01-10 19:35:24,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964191971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:24,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:24,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:35:24,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824876068] [2022-01-10 19:35:24,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:24,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:24,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:24,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:25,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:25,000 INFO L87 Difference]: Start difference. First operand 13351 states and 18200 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 19:35:25,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:25,717 INFO L93 Difference]: Finished difference Result 34816 states and 45306 transitions. [2022-01-10 19:35:25,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:25,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 19:35:25,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:25,748 INFO L225 Difference]: With dead ends: 34816 [2022-01-10 19:35:25,749 INFO L226 Difference]: Without dead ends: 23662 [2022-01-10 19:35:25,762 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 19:35:25,762 INFO L933 BasicCegarLoop]: 4826 mSDtfsCounter, 4567 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4567 SdHoareTripleChecker+Valid, 5498 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:25,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4567 Valid, 5498 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:25,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23662 states. [2022-01-10 19:35:26,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23662 to 22876. [2022-01-10 19:35:26,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22876 states, 22874 states have (on average 1.3150301652531258) internal successors, (30080), 22875 states have internal predecessors, (30080), 0 states have call successors, (0), 0 states 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 19:35:26,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22876 states to 22876 states and 30080 transitions. [2022-01-10 19:35:26,554 INFO L78 Accepts]: Start accepts. Automaton has 22876 states and 30080 transitions. Word has length 143 [2022-01-10 19:35:26,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:26,555 INFO L470 AbstractCegarLoop]: Abstraction has 22876 states and 30080 transitions. [2022-01-10 19:35:26,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 19:35:26,555 INFO L276 IsEmpty]: Start isEmpty. Operand 22876 states and 30080 transitions. [2022-01-10 19:35:26,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 19:35:26,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:26,562 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:26,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 19:35:26,562 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:26,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:26,563 INFO L85 PathProgramCache]: Analyzing trace with hash 220748318, now seen corresponding path program 1 times [2022-01-10 19:35:26,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:26,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189221216] [2022-01-10 19:35:26,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:26,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:26,584 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 19:35:26,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:26,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189221216] [2022-01-10 19:35:26,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189221216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:26,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:26,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:35:26,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117327763] [2022-01-10 19:35:26,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:26,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:26,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:26,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:26,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:26,585 INFO L87 Difference]: Start difference. First operand 22876 states and 30080 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 19:35:27,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:27,344 INFO L93 Difference]: Finished difference Result 43520 states and 56072 transitions. [2022-01-10 19:35:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:27,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 143 [2022-01-10 19:35:27,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:27,373 INFO L225 Difference]: With dead ends: 43520 [2022-01-10 19:35:27,374 INFO L226 Difference]: Without dead ends: 22807 [2022-01-10 19:35:27,395 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 19:35:27,396 INFO L933 BasicCegarLoop]: 4657 mSDtfsCounter, 694 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 8615 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 19:35:27,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 8615 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:27,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22807 states. [2022-01-10 19:35:28,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22807 to 22807. [2022-01-10 19:35:28,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22807 states, 22805 states have (on average 1.3154571365928525) internal successors, (29999), 22806 states have internal predecessors, (29999), 0 states have call successors, (0), 0 states 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 19:35:28,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22807 states to 22807 states and 29999 transitions. [2022-01-10 19:35:28,263 INFO L78 Accepts]: Start accepts. Automaton has 22807 states and 29999 transitions. Word has length 143 [2022-01-10 19:35:28,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:28,263 INFO L470 AbstractCegarLoop]: Abstraction has 22807 states and 29999 transitions. [2022-01-10 19:35:28,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 19:35:28,263 INFO L276 IsEmpty]: Start isEmpty. Operand 22807 states and 29999 transitions. [2022-01-10 19:35:28,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-10 19:35:28,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:28,270 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:28,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 19:35:28,270 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:28,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:28,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1026743091, now seen corresponding path program 1 times [2022-01-10 19:35:28,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:28,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445243825] [2022-01-10 19:35:28,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:28,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:28,313 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 19:35:28,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:28,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445243825] [2022-01-10 19:35:28,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445243825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:28,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:28,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:35:28,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157805782] [2022-01-10 19:35:28,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:28,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:28,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:28,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:28,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:28,316 INFO L87 Difference]: Start difference. First operand 22807 states and 29999 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 19:35:29,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:29,758 INFO L93 Difference]: Finished difference Result 62015 states and 79231 transitions. [2022-01-10 19:35:29,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:29,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2022-01-10 19:35:29,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:29,809 INFO L225 Difference]: With dead ends: 62015 [2022-01-10 19:35:29,810 INFO L226 Difference]: Without dead ends: 41405 [2022-01-10 19:35:29,827 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 19:35:29,829 INFO L933 BasicCegarLoop]: 4808 mSDtfsCounter, 4569 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 5478 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:29,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4569 Valid, 5478 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:29,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41405 states. [2022-01-10 19:35:31,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41405 to 40283. [2022-01-10 19:35:31,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40283 states, 40281 states have (on average 1.2856930066284353) internal successors, (51789), 40282 states have internal predecessors, (51789), 0 states have call successors, (0), 0 states 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 19:35:31,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40283 states to 40283 states and 51789 transitions. [2022-01-10 19:35:31,583 INFO L78 Accepts]: Start accepts. Automaton has 40283 states and 51789 transitions. Word has length 144 [2022-01-10 19:35:31,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:31,583 INFO L470 AbstractCegarLoop]: Abstraction has 40283 states and 51789 transitions. [2022-01-10 19:35:31,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 19:35:31,583 INFO L276 IsEmpty]: Start isEmpty. Operand 40283 states and 51789 transitions. [2022-01-10 19:35:31,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-10 19:35:31,594 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:31,594 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:31,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 19:35:31,595 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:31,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:31,596 INFO L85 PathProgramCache]: Analyzing trace with hash -439265938, now seen corresponding path program 1 times [2022-01-10 19:35:31,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:31,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317113967] [2022-01-10 19:35:31,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:31,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:31,620 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 19:35:31,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:31,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317113967] [2022-01-10 19:35:31,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317113967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:31,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:31,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:35:31,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22301145] [2022-01-10 19:35:31,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:31,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:31,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:31,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:31,622 INFO L87 Difference]: Start difference. First operand 40283 states and 51789 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 19:35:33,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:33,352 INFO L93 Difference]: Finished difference Result 78328 states and 99484 transitions. [2022-01-10 19:35:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:33,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 144 [2022-01-10 19:35:33,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:33,409 INFO L225 Difference]: With dead ends: 78328 [2022-01-10 19:35:33,409 INFO L226 Difference]: Without dead ends: 40215 [2022-01-10 19:35:33,437 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 19:35:33,438 INFO L933 BasicCegarLoop]: 4656 mSDtfsCounter, 692 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 8614 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 19:35:33,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 8614 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:33,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40215 states. [2022-01-10 19:35:35,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40215 to 40215. [2022-01-10 19:35:35,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40215 states, 40213 states have (on average 1.285902568821028) internal successors, (51710), 40214 states have internal predecessors, (51710), 0 states have call successors, (0), 0 states 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 19:35:35,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40215 states to 40215 states and 51710 transitions. [2022-01-10 19:35:35,209 INFO L78 Accepts]: Start accepts. Automaton has 40215 states and 51710 transitions. Word has length 144 [2022-01-10 19:35:35,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:35,209 INFO L470 AbstractCegarLoop]: Abstraction has 40215 states and 51710 transitions. [2022-01-10 19:35:35,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 19:35:35,210 INFO L276 IsEmpty]: Start isEmpty. Operand 40215 states and 51710 transitions. [2022-01-10 19:35:35,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 19:35:35,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:35,219 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:35,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 19:35:35,220 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:35,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:35,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1112968334, now seen corresponding path program 1 times [2022-01-10 19:35:35,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:35,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459905261] [2022-01-10 19:35:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:35,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:35,251 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 19:35:35,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:35,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459905261] [2022-01-10 19:35:35,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459905261] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:35,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:35,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:35:35,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438739631] [2022-01-10 19:35:35,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:35,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:35,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:35,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:35,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:35,252 INFO L87 Difference]: Start difference. First operand 40215 states and 51710 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 19:35:38,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:38,386 INFO L93 Difference]: Finished difference Result 113710 states and 143692 transitions. [2022-01-10 19:35:38,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:38,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2022-01-10 19:35:38,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:38,489 INFO L225 Difference]: With dead ends: 113710 [2022-01-10 19:35:38,489 INFO L226 Difference]: Without dead ends: 75692 [2022-01-10 19:35:38,524 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 19:35:38,525 INFO L933 BasicCegarLoop]: 4802 mSDtfsCounter, 4569 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 5470 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:38,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4569 Valid, 5470 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:38,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75692 states. [2022-01-10 19:35:41,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75692 to 74986. [2022-01-10 19:35:42,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74986 states, 74984 states have (on average 1.2663234823428997) internal successors, (94954), 74985 states have internal predecessors, (94954), 0 states have call successors, (0), 0 states 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 19:35:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74986 states to 74986 states and 94954 transitions. [2022-01-10 19:35:42,150 INFO L78 Accepts]: Start accepts. Automaton has 74986 states and 94954 transitions. Word has length 145 [2022-01-10 19:35:42,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:42,150 INFO L470 AbstractCegarLoop]: Abstraction has 74986 states and 94954 transitions. [2022-01-10 19:35:42,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 19:35:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 74986 states and 94954 transitions. [2022-01-10 19:35:42,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 19:35:42,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:42,173 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:42,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 19:35:42,174 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:42,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:42,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1240525647, now seen corresponding path program 1 times [2022-01-10 19:35:42,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:42,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143337863] [2022-01-10 19:35:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:42,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:42,376 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 19:35:42,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:42,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143337863] [2022-01-10 19:35:42,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143337863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:42,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:42,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:35:42,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953511626] [2022-01-10 19:35:42,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:42,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:42,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:42,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:42,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:42,377 INFO L87 Difference]: Start difference. First operand 74986 states and 94954 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 19:35:44,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:44,811 INFO L93 Difference]: Finished difference Result 130489 states and 164378 transitions. [2022-01-10 19:35:44,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:44,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 145 [2022-01-10 19:35:44,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:44,899 INFO L225 Difference]: With dead ends: 130489 [2022-01-10 19:35:44,899 INFO L226 Difference]: Without dead ends: 57679 [2022-01-10 19:35:44,946 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 19:35:44,946 INFO L933 BasicCegarLoop]: 4655 mSDtfsCounter, 690 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 8613 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 19:35:44,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 8613 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:44,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57679 states. [2022-01-10 19:35:47,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57679 to 57679. [2022-01-10 19:35:47,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57679 states, 57677 states have (on average 1.2733845380307576) internal successors, (73445), 57678 states have internal predecessors, (73445), 0 states have call successors, (0), 0 states 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 19:35:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57679 states to 57679 states and 73445 transitions. [2022-01-10 19:35:47,777 INFO L78 Accepts]: Start accepts. Automaton has 57679 states and 73445 transitions. Word has length 145 [2022-01-10 19:35:47,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:47,778 INFO L470 AbstractCegarLoop]: Abstraction has 57679 states and 73445 transitions. [2022-01-10 19:35:47,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 19:35:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 57679 states and 73445 transitions. [2022-01-10 19:35:47,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 19:35:47,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:47,790 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:47,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 19:35:47,791 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:47,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:47,791 INFO L85 PathProgramCache]: Analyzing trace with hash -15203847, now seen corresponding path program 1 times [2022-01-10 19:35:47,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:47,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105404766] [2022-01-10 19:35:47,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:47,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:47,824 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 19:35:47,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:47,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105404766] [2022-01-10 19:35:47,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105404766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:47,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:47,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:35:47,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384053657] [2022-01-10 19:35:47,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:47,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:47,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:47,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:47,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:47,825 INFO L87 Difference]: Start difference. First operand 57679 states and 73445 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 19:35:52,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:35:52,263 INFO L93 Difference]: Finished difference Result 160133 states and 201217 transitions. [2022-01-10 19:35:52,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:35:52,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-01-10 19:35:52,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:35:52,441 INFO L225 Difference]: With dead ends: 160133 [2022-01-10 19:35:52,441 INFO L226 Difference]: Without dead ends: 104651 [2022-01-10 19:35:52,501 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 19:35:52,502 INFO L933 BasicCegarLoop]: 4803 mSDtfsCounter, 4568 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4568 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:35:52,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4568 Valid, 5469 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:35:52,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104651 states. [2022-01-10 19:35:57,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104651 to 103881. [2022-01-10 19:35:57,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103881 states, 103879 states have (on average 1.2594557128967356) internal successors, (130831), 103880 states have internal predecessors, (130831), 0 states have call successors, (0), 0 states 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 19:35:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103881 states to 103881 states and 130831 transitions. [2022-01-10 19:35:57,784 INFO L78 Accepts]: Start accepts. Automaton has 103881 states and 130831 transitions. Word has length 146 [2022-01-10 19:35:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:35:57,784 INFO L470 AbstractCegarLoop]: Abstraction has 103881 states and 130831 transitions. [2022-01-10 19:35:57,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 19:35:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 103881 states and 130831 transitions. [2022-01-10 19:35:57,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 19:35:57,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:35:57,811 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:35:57,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 19:35:57,811 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:35:57,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:35:57,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2118360346, now seen corresponding path program 1 times [2022-01-10 19:35:57,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:35:57,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219052760] [2022-01-10 19:35:57,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:35:57,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:35:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:35:57,845 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 19:35:57,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:35:57,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219052760] [2022-01-10 19:35:57,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219052760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:35:57,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:35:57,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:35:57,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18626461] [2022-01-10 19:35:57,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:35:57,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:35:57,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:35:57,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:35:57,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:35:57,847 INFO L87 Difference]: Start difference. First operand 103881 states and 130831 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 19:36:02,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:36:02,990 INFO L93 Difference]: Finished difference Result 205513 states and 257558 transitions. [2022-01-10 19:36:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:36:02,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 146 [2022-01-10 19:36:02,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:36:03,277 INFO L225 Difference]: With dead ends: 205513 [2022-01-10 19:36:03,278 INFO L226 Difference]: Without dead ends: 103815 [2022-01-10 19:36:03,345 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 19:36:03,346 INFO L933 BasicCegarLoop]: 4654 mSDtfsCounter, 688 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 8612 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 19:36:03,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 8612 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:36:03,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103815 states. [2022-01-10 19:36:08,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103815 to 103815. [2022-01-10 19:36:08,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103815 states, 103813 states have (on average 1.259533969734041) internal successors, (130756), 103814 states have internal predecessors, (130756), 0 states have call successors, (0), 0 states 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 19:36:08,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103815 states to 103815 states and 130756 transitions. [2022-01-10 19:36:08,651 INFO L78 Accepts]: Start accepts. Automaton has 103815 states and 130756 transitions. Word has length 146 [2022-01-10 19:36:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:36:08,651 INFO L470 AbstractCegarLoop]: Abstraction has 103815 states and 130756 transitions. [2022-01-10 19:36:08,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 19:36:08,651 INFO L276 IsEmpty]: Start isEmpty. Operand 103815 states and 130756 transitions. [2022-01-10 19:36:08,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 19:36:08,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:36:08,672 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:36:08,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 19:36:08,672 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:36:08,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:36:08,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1502148792, now seen corresponding path program 1 times [2022-01-10 19:36:08,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:36:08,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979211135] [2022-01-10 19:36:08,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:36:08,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:36:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:36:08,735 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 19:36:08,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:36:08,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979211135] [2022-01-10 19:36:08,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979211135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:36:08,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:36:08,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:36:08,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288178083] [2022-01-10 19:36:08,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:36:08,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:36:08,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:36:08,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:36:08,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:36:08,736 INFO L87 Difference]: Start difference. First operand 103815 states and 130756 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)