/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_BITWISE.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label48+token_ring.06.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:44:49,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:44:49,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:44:49,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:44:49,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:44:49,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:44:49,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:44:49,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:44:49,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:44:49,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:44:49,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:44:49,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:44:49,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:44:49,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:44:49,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:44:49,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:44:49,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:44:49,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:44:49,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:44:49,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:44:49,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:44:49,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:44:49,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:44:49,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:44:49,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:44:49,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:44:49,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:44:49,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:44:49,976 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:44:49,998 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:44:49,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:44:49,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:44:49,998 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:44:49,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:44:50,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:44:50,000 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:44:50,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:44:50,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:44:50,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:44:50,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:44:50,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:44:50,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:44:50,001 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:44:50,001 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:44:50,001 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:44:50,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:44:50,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:44:50,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:44:50,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:44:50,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:44:50,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:44:50,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:44:50,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:44:50,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:44:50,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:44:50,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:44:50,003 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:44:50,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:44:50,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:44:50,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:44:50,003 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:44:50,004 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:44:50,004 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:44:50,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:44:50,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:44:50,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:44:50,262 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:44:50,264 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:44:50,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label48+token_ring.06.cil-2.c [2022-01-10 13:44:50,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bce5ab24/c3afffd2f8a545f2a0793f3614ccc4aa/FLAGb93baf8d4 [2022-01-10 13:44:51,189 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:44:51,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.06.cil-2.c [2022-01-10 13:44:51,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bce5ab24/c3afffd2f8a545f2a0793f3614ccc4aa/FLAGb93baf8d4 [2022-01-10 13:44:51,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bce5ab24/c3afffd2f8a545f2a0793f3614ccc4aa [2022-01-10 13:44:51,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:44:51,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:44:51,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:44:51,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:44:51,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:44:51,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:44:51" (1/1) ... [2022-01-10 13:44:51,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d9c4d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:44:51, skipping insertion in model container [2022-01-10 13:44:51,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:44:51" (1/1) ... [2022-01-10 13:44:51,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:44:51,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:44:53,429 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.06.cil-2.c[375709,375722] [2022-01-10 13:44:53,462 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.06.cil-2.c[383339,383352] [2022-01-10 13:44:53,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:44:53,663 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:44:54,407 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.06.cil-2.c[375709,375722] [2022-01-10 13:44:54,426 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.06.cil-2.c[383339,383352] [2022-01-10 13:44:54,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:44:54,496 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:44:54,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:44:54 WrapperNode [2022-01-10 13:44:54,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:44:54,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:44:54,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:44:54,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:44:54,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:44:54" (1/1) ... [2022-01-10 13:44:54,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:44:54" (1/1) ... [2022-01-10 13:44:55,035 INFO L137 Inliner]: procedures = 57, calls = 59, calls flagged for inlining = 54, calls inlined = 123, statements flattened = 13985 [2022-01-10 13:44:55,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:44:55,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:44:55,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:44:55,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:44:55,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:44:54" (1/1) ... [2022-01-10 13:44:55,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:44:54" (1/1) ... [2022-01-10 13:44:55,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:44:54" (1/1) ... [2022-01-10 13:44:55,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:44:54" (1/1) ... [2022-01-10 13:44:55,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:44:54" (1/1) ... [2022-01-10 13:44:55,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:44:54" (1/1) ... [2022-01-10 13:44:55,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:44:54" (1/1) ... [2022-01-10 13:44:55,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:44:55,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:44:55,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:44:55,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:44:55,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:44:54" (1/1) ... [2022-01-10 13:44:55,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:44:55,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:44:55,625 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 13:44:55,637 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 13:44:55,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:44:55,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:44:55,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:44:55,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:44:55,778 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:44:55,780 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:45:03,790 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:45:03,826 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:45:03,827 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-01-10 13:45:03,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:45:03 BoogieIcfgContainer [2022-01-10 13:45:03,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:45:03,832 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:45:03,832 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:45:03,833 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:45:03,836 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:45:03" (1/1) ... [2022-01-10 13:45:05,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:45:05 BasicIcfg [2022-01-10 13:45:05,364 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:45:05,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:45:05,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:45:05,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:45:05,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:44:51" (1/4) ... [2022-01-10 13:45:05,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a0e1df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:45:05, skipping insertion in model container [2022-01-10 13:45:05,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:44:54" (2/4) ... [2022-01-10 13:45:05,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a0e1df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:45:05, skipping insertion in model container [2022-01-10 13:45:05,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:45:03" (3/4) ... [2022-01-10 13:45:05,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a0e1df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:45:05, skipping insertion in model container [2022-01-10 13:45:05,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:45:05" (4/4) ... [2022-01-10 13:45:05,372 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.06.cil-2.cTransformedIcfg [2022-01-10 13:45:05,376 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:45:05,377 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 13:45:05,436 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:45:05,443 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 13:45:05,444 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 13:45:05,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 2871 states, 2868 states have (on average 1.788702928870293) internal successors, (5130), 2870 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:05,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:45:05,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:05,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:05,518 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:05,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:05,522 INFO L85 PathProgramCache]: Analyzing trace with hash 58261984, now seen corresponding path program 1 times [2022-01-10 13:45:05,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:05,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548785456] [2022-01-10 13:45:05,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:05,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:05,823 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 13:45:05,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:05,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548785456] [2022-01-10 13:45:05,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548785456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:05,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:05,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:45:05,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918057075] [2022-01-10 13:45:05,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:05,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:05,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:05,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:05,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:05,869 INFO L87 Difference]: Start difference. First operand has 2871 states, 2868 states have (on average 1.788702928870293) internal successors, (5130), 2870 states have internal predecessors, (5130), 0 states have call successors, (0), 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 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:06,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:06,169 INFO L93 Difference]: Finished difference Result 6273 states and 11062 transitions. [2022-01-10 13:45:06,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:06,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 13:45:06,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:06,198 INFO L225 Difference]: With dead ends: 6273 [2022-01-10 13:45:06,198 INFO L226 Difference]: Without dead ends: 3345 [2022-01-10 13:45:06,209 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 13:45:06,212 INFO L933 BasicCegarLoop]: 5041 mSDtfsCounter, 4956 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4956 SdHoareTripleChecker+Valid, 5914 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 13:45:06,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4956 Valid, 5914 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:06,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2022-01-10 13:45:06,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 3343. [2022-01-10 13:45:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7291230170607603) internal successors, (5777), 3342 states have internal predecessors, (5777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5777 transitions. [2022-01-10 13:45:06,375 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5777 transitions. Word has length 99 [2022-01-10 13:45:06,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:06,376 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5777 transitions. [2022-01-10 13:45:06,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:06,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5777 transitions. [2022-01-10 13:45:06,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:45:06,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:06,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:06,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:45:06,382 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:06,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:06,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1226458239, now seen corresponding path program 1 times [2022-01-10 13:45:06,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:06,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503470675] [2022-01-10 13:45:06,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:06,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:06,457 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 13:45:06,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:06,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503470675] [2022-01-10 13:45:06,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503470675] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:06,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:06,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:45:06,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093064467] [2022-01-10 13:45:06,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:06,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:06,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:06,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:06,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:06,460 INFO L87 Difference]: Start difference. First operand 3343 states and 5777 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:06,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:06,538 INFO L93 Difference]: Finished difference Result 4551 states and 7574 transitions. [2022-01-10 13:45:06,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:06,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 13:45:06,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:06,552 INFO L225 Difference]: With dead ends: 4551 [2022-01-10 13:45:06,552 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 13:45:06,555 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 13:45:06,557 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 4959 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4959 SdHoareTripleChecker+Valid, 4968 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 13:45:06,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4959 Valid, 4968 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 13:45:06,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 13:45:06,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7267285243938941) internal successors, (5769), 3342 states have internal predecessors, (5769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:06,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5769 transitions. [2022-01-10 13:45:06,643 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5769 transitions. Word has length 99 [2022-01-10 13:45:06,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:06,644 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5769 transitions. [2022-01-10 13:45:06,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:06,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5769 transitions. [2022-01-10 13:45:06,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:45:06,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:06,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:06,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:45:06,647 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:06,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:06,647 INFO L85 PathProgramCache]: Analyzing trace with hash -237520545, now seen corresponding path program 1 times [2022-01-10 13:45:06,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:06,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900684815] [2022-01-10 13:45:06,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:06,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:06,744 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 13:45:06,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:06,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900684815] [2022-01-10 13:45:06,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900684815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:06,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:06,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:45:06,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003766852] [2022-01-10 13:45:06,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:06,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:06,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:06,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:06,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:06,747 INFO L87 Difference]: Start difference. First operand 3343 states and 5769 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:06,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:06,830 INFO L93 Difference]: Finished difference Result 4550 states and 7557 transitions. [2022-01-10 13:45:06,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:06,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 13:45:06,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:06,844 INFO L225 Difference]: With dead ends: 4550 [2022-01-10 13:45:06,844 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 13:45:06,851 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 13:45:06,854 INFO L933 BasicCegarLoop]: 4963 mSDtfsCounter, 4953 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4953 SdHoareTripleChecker+Valid, 4963 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 13:45:06,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4953 Valid, 4963 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:06,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 13:45:07,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 13:45:07,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.724334031727028) internal successors, (5761), 3342 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5761 transitions. [2022-01-10 13:45:07,129 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5761 transitions. Word has length 99 [2022-01-10 13:45:07,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:07,130 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5761 transitions. [2022-01-10 13:45:07,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:07,131 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5761 transitions. [2022-01-10 13:45:07,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:45:07,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:07,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:07,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:45:07,134 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:07,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:07,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1932011647, now seen corresponding path program 1 times [2022-01-10 13:45:07,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:07,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584841975] [2022-01-10 13:45:07,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:07,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:07,213 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 13:45:07,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:07,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584841975] [2022-01-10 13:45:07,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584841975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:07,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:07,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:45:07,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650485565] [2022-01-10 13:45:07,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:07,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:07,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:07,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:07,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:07,217 INFO L87 Difference]: Start difference. First operand 3343 states and 5761 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:07,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:07,295 INFO L93 Difference]: Finished difference Result 4549 states and 7540 transitions. [2022-01-10 13:45:07,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:07,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 13:45:07,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:07,308 INFO L225 Difference]: With dead ends: 4549 [2022-01-10 13:45:07,309 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 13:45:07,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:07,319 INFO L933 BasicCegarLoop]: 4958 mSDtfsCounter, 4947 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 4958 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 13:45:07,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 4958 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:07,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 13:45:07,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 13:45:07,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7219395390601617) internal successors, (5753), 3342 states have internal predecessors, (5753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:07,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5753 transitions. [2022-01-10 13:45:07,406 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5753 transitions. Word has length 99 [2022-01-10 13:45:07,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:07,407 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5753 transitions. [2022-01-10 13:45:07,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:07,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5753 transitions. [2022-01-10 13:45:07,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:45:07,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:07,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:07,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:45:07,408 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:07,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:07,411 INFO L85 PathProgramCache]: Analyzing trace with hash 477975903, now seen corresponding path program 1 times [2022-01-10 13:45:07,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:07,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944765420] [2022-01-10 13:45:07,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:07,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:07,479 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 13:45:07,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:07,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944765420] [2022-01-10 13:45:07,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944765420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:07,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:07,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:45:07,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851737976] [2022-01-10 13:45:07,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:07,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:07,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:07,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:07,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:07,482 INFO L87 Difference]: Start difference. First operand 3343 states and 5753 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:07,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:07,563 INFO L93 Difference]: Finished difference Result 4548 states and 7523 transitions. [2022-01-10 13:45:07,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:07,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 13:45:07,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:07,577 INFO L225 Difference]: With dead ends: 4548 [2022-01-10 13:45:07,578 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 13:45:07,581 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 13:45:07,581 INFO L933 BasicCegarLoop]: 4953 mSDtfsCounter, 4941 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4941 SdHoareTripleChecker+Valid, 4953 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 13:45:07,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4941 Valid, 4953 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:07,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 13:45:07,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 13:45:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7195450463932955) internal successors, (5745), 3342 states have internal predecessors, (5745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:07,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5745 transitions. [2022-01-10 13:45:07,685 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5745 transitions. Word has length 99 [2022-01-10 13:45:07,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:07,688 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5745 transitions. [2022-01-10 13:45:07,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:07,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5745 transitions. [2022-01-10 13:45:07,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:45:07,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:07,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:07,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:45:07,697 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:07,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:07,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1261354878, now seen corresponding path program 1 times [2022-01-10 13:45:07,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:07,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860801618] [2022-01-10 13:45:07,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:07,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:07,743 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 13:45:07,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:07,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860801618] [2022-01-10 13:45:07,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860801618] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:07,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:07,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:45:07,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424564241] [2022-01-10 13:45:07,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:07,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:07,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:07,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:07,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:07,745 INFO L87 Difference]: Start difference. First operand 3343 states and 5745 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:07,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:07,824 INFO L93 Difference]: Finished difference Result 4547 states and 7506 transitions. [2022-01-10 13:45:07,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:07,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 13:45:07,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:07,839 INFO L225 Difference]: With dead ends: 4547 [2022-01-10 13:45:07,839 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 13:45:07,841 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 13:45:07,843 INFO L933 BasicCegarLoop]: 4948 mSDtfsCounter, 4935 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4935 SdHoareTripleChecker+Valid, 4948 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 13:45:07,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4935 Valid, 4948 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:07,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 13:45:07,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 13:45:07,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.717150553726429) internal successors, (5737), 3342 states have internal predecessors, (5737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:07,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5737 transitions. [2022-01-10 13:45:07,932 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5737 transitions. Word has length 99 [2022-01-10 13:45:07,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:07,932 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5737 transitions. [2022-01-10 13:45:07,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:07,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5737 transitions. [2022-01-10 13:45:07,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:45:07,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:07,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:07,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:45:07,934 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:07,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:07,934 INFO L85 PathProgramCache]: Analyzing trace with hash 665429086, now seen corresponding path program 1 times [2022-01-10 13:45:07,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:07,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853996247] [2022-01-10 13:45:07,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:07,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:07,988 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 13:45:07,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:07,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853996247] [2022-01-10 13:45:07,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853996247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:07,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:07,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:45:07,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032147141] [2022-01-10 13:45:07,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:07,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:07,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:07,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:07,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:07,990 INFO L87 Difference]: Start difference. First operand 3343 states and 5737 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:08,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:08,070 INFO L93 Difference]: Finished difference Result 4546 states and 7489 transitions. [2022-01-10 13:45:08,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:08,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 13:45:08,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:08,099 INFO L225 Difference]: With dead ends: 4546 [2022-01-10 13:45:08,099 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 13:45:08,102 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 13:45:08,103 INFO L933 BasicCegarLoop]: 4943 mSDtfsCounter, 4929 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4929 SdHoareTripleChecker+Valid, 4943 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 13:45:08,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4929 Valid, 4943 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:08,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 13:45:08,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 13:45:08,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.714756061059563) internal successors, (5729), 3342 states have internal predecessors, (5729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5729 transitions. [2022-01-10 13:45:08,293 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5729 transitions. Word has length 99 [2022-01-10 13:45:08,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:08,293 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5729 transitions. [2022-01-10 13:45:08,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:08,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5729 transitions. [2022-01-10 13:45:08,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:45:08,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:08,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:45:08,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:45:08,296 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:08,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:08,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1338942334, now seen corresponding path program 1 times [2022-01-10 13:45:08,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:08,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177361316] [2022-01-10 13:45:08,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:08,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:08,348 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 13:45:08,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:08,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177361316] [2022-01-10 13:45:08,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177361316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:08,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:08,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:45:08,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244871247] [2022-01-10 13:45:08,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:08,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:08,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:08,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:08,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:08,351 INFO L87 Difference]: Start difference. First operand 3343 states and 5729 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:08,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:08,483 INFO L93 Difference]: Finished difference Result 4545 states and 7472 transitions. [2022-01-10 13:45:08,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:08,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 13:45:08,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:08,492 INFO L225 Difference]: With dead ends: 4545 [2022-01-10 13:45:08,492 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 13:45:08,495 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 13:45:08,496 INFO L933 BasicCegarLoop]: 4920 mSDtfsCounter, 4842 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4842 SdHoareTripleChecker+Valid, 4988 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:45:08,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4842 Valid, 4988 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:08,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 13:45:08,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 13:45:08,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7075725830589643) internal successors, (5705), 3342 states have internal predecessors, (5705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:08,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5705 transitions. [2022-01-10 13:45:08,611 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5705 transitions. Word has length 99 [2022-01-10 13:45:08,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:08,612 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5705 transitions. [2022-01-10 13:45:08,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:08,613 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5705 transitions. [2022-01-10 13:45:08,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:45:08,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:08,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:08,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:45:08,614 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:08,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:08,615 INFO L85 PathProgramCache]: Analyzing trace with hash 845788381, now seen corresponding path program 1 times [2022-01-10 13:45:08,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:08,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160559659] [2022-01-10 13:45:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:08,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:08,665 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 13:45:08,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:08,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160559659] [2022-01-10 13:45:08,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160559659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:08,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:08,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:45:08,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796966659] [2022-01-10 13:45:08,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:08,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:08,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:08,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:08,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:08,667 INFO L87 Difference]: Start difference. First operand 3343 states and 5705 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:08,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:08,783 INFO L93 Difference]: Finished difference Result 4544 states and 7423 transitions. [2022-01-10 13:45:08,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:08,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 13:45:08,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:08,791 INFO L225 Difference]: With dead ends: 4544 [2022-01-10 13:45:08,791 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 13:45:08,794 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 13:45:08,796 INFO L933 BasicCegarLoop]: 4906 mSDtfsCounter, 4828 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4828 SdHoareTripleChecker+Valid, 4973 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:45:08,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4828 Valid, 4973 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:08,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 13:45:08,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 13:45:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7003891050583657) internal successors, (5681), 3342 states have internal predecessors, (5681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:08,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5681 transitions. [2022-01-10 13:45:08,904 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5681 transitions. Word has length 99 [2022-01-10 13:45:08,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:08,905 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5681 transitions. [2022-01-10 13:45:08,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:08,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5681 transitions. [2022-01-10 13:45:08,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:45:08,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:08,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:08,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:45:08,910 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:08,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:08,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1779661253, now seen corresponding path program 1 times [2022-01-10 13:45:08,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:08,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058591234] [2022-01-10 13:45:08,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:08,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:08,951 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 13:45:08,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:08,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058591234] [2022-01-10 13:45:08,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058591234] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:08,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:08,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:45:08,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010570017] [2022-01-10 13:45:08,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:08,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:08,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:08,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:08,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:08,953 INFO L87 Difference]: Start difference. First operand 3343 states and 5681 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:09,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:09,071 INFO L93 Difference]: Finished difference Result 4543 states and 7374 transitions. [2022-01-10 13:45:09,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:09,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 13:45:09,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:09,079 INFO L225 Difference]: With dead ends: 4543 [2022-01-10 13:45:09,079 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 13:45:09,082 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 13:45:09,083 INFO L933 BasicCegarLoop]: 4892 mSDtfsCounter, 4814 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4814 SdHoareTripleChecker+Valid, 4958 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:45:09,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4814 Valid, 4958 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:09,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 13:45:09,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 13:45:09,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6932056270577671) internal successors, (5657), 3342 states have internal predecessors, (5657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:09,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5657 transitions. [2022-01-10 13:45:09,197 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5657 transitions. Word has length 99 [2022-01-10 13:45:09,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:09,198 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5657 transitions. [2022-01-10 13:45:09,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:09,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5657 transitions. [2022-01-10 13:45:09,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:45:09,199 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:09,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:45:09,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:45:09,200 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:09,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:09,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1460873702, now seen corresponding path program 1 times [2022-01-10 13:45:09,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:09,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627649090] [2022-01-10 13:45:09,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:09,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:09,239 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 13:45:09,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:09,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627649090] [2022-01-10 13:45:09,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627649090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:09,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:09,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:45:09,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750656375] [2022-01-10 13:45:09,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:09,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:09,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:09,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:09,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:09,241 INFO L87 Difference]: Start difference. First operand 3343 states and 5657 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:09,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:09,360 INFO L93 Difference]: Finished difference Result 4542 states and 7325 transitions. [2022-01-10 13:45:09,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:09,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 13:45:09,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:09,368 INFO L225 Difference]: With dead ends: 4542 [2022-01-10 13:45:09,368 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 13:45:09,371 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 13:45:09,372 INFO L933 BasicCegarLoop]: 4878 mSDtfsCounter, 4800 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4800 SdHoareTripleChecker+Valid, 4943 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:45:09,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4800 Valid, 4943 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:09,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 13:45:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 13:45:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6860221490571685) internal successors, (5633), 3342 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:09,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5633 transitions. [2022-01-10 13:45:09,484 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5633 transitions. Word has length 99 [2022-01-10 13:45:09,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:09,484 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5633 transitions. [2022-01-10 13:45:09,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:09,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5633 transitions. [2022-01-10 13:45:09,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:45:09,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:09,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:09,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:45:09,486 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:09,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:09,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1583723655, now seen corresponding path program 1 times [2022-01-10 13:45:09,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:09,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286101549] [2022-01-10 13:45:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:09,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:09,525 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 13:45:09,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:09,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286101549] [2022-01-10 13:45:09,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286101549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:09,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:09,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:45:09,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067776537] [2022-01-10 13:45:09,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:09,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:09,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:09,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:09,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:09,527 INFO L87 Difference]: Start difference. First operand 3343 states and 5633 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:09,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:09,644 INFO L93 Difference]: Finished difference Result 4541 states and 7276 transitions. [2022-01-10 13:45:09,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:09,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 13:45:09,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:09,652 INFO L225 Difference]: With dead ends: 4541 [2022-01-10 13:45:09,652 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 13:45:09,655 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 13:45:09,656 INFO L933 BasicCegarLoop]: 4864 mSDtfsCounter, 4786 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4786 SdHoareTripleChecker+Valid, 4928 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:45:09,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4786 Valid, 4928 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:09,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 13:45:09,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 13:45:09,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.67883867105657) internal successors, (5609), 3342 states have internal predecessors, (5609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5609 transitions. [2022-01-10 13:45:09,765 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5609 transitions. Word has length 99 [2022-01-10 13:45:09,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:09,766 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5609 transitions. [2022-01-10 13:45:09,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:09,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5609 transitions. [2022-01-10 13:45:09,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:45:09,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:09,768 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:09,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:45:09,768 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:09,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:09,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2109498920, now seen corresponding path program 1 times [2022-01-10 13:45:09,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:09,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350148998] [2022-01-10 13:45:09,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:09,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:09,812 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 13:45:09,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:09,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350148998] [2022-01-10 13:45:09,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350148998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:09,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:09,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:45:09,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865930961] [2022-01-10 13:45:09,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:09,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:09,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:09,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:09,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:09,815 INFO L87 Difference]: Start difference. First operand 3343 states and 5609 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:09,943 INFO L93 Difference]: Finished difference Result 4540 states and 7227 transitions. [2022-01-10 13:45:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:09,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 13:45:09,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:09,951 INFO L225 Difference]: With dead ends: 4540 [2022-01-10 13:45:09,951 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 13:45:09,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:09,956 INFO L933 BasicCegarLoop]: 4850 mSDtfsCounter, 4772 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4772 SdHoareTripleChecker+Valid, 4913 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:45:09,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4772 Valid, 4913 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:09,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 13:45:10,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 13:45:10,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6716551930559713) internal successors, (5585), 3342 states have internal predecessors, (5585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:10,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5585 transitions. [2022-01-10 13:45:10,073 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5585 transitions. Word has length 99 [2022-01-10 13:45:10,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:10,074 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5585 transitions. [2022-01-10 13:45:10,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:10,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5585 transitions. [2022-01-10 13:45:10,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:45:10,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:10,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:10,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:45:10,076 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:10,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:10,077 INFO L85 PathProgramCache]: Analyzing trace with hash 674921911, now seen corresponding path program 1 times [2022-01-10 13:45:10,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:10,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380232504] [2022-01-10 13:45:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:10,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:10,115 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 13:45:10,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:10,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380232504] [2022-01-10 13:45:10,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380232504] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:10,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:10,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:45:10,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377138617] [2022-01-10 13:45:10,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:10,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:10,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:10,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:10,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:10,117 INFO L87 Difference]: Start difference. First operand 3343 states and 5585 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:10,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:10,249 INFO L93 Difference]: Finished difference Result 4539 states and 7178 transitions. [2022-01-10 13:45:10,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:10,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 13:45:10,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:10,256 INFO L225 Difference]: With dead ends: 4539 [2022-01-10 13:45:10,257 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 13:45:10,259 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 13:45:10,260 INFO L933 BasicCegarLoop]: 4836 mSDtfsCounter, 4758 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4758 SdHoareTripleChecker+Valid, 4898 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:45:10,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4758 Valid, 4898 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:10,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 13:45:10,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-10 13:45:10,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6644717150553727) internal successors, (5561), 3342 states have internal predecessors, (5561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5561 transitions. [2022-01-10 13:45:10,381 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5561 transitions. Word has length 99 [2022-01-10 13:45:10,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:10,381 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5561 transitions. [2022-01-10 13:45:10,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:10,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5561 transitions. [2022-01-10 13:45:10,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:45:10,383 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:10,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:10,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 13:45:10,383 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:10,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:10,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1309635946, now seen corresponding path program 1 times [2022-01-10 13:45:10,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:10,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805252241] [2022-01-10 13:45:10,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:10,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:10,446 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 13:45:10,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:10,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805252241] [2022-01-10 13:45:10,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805252241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:10,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:10,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:45:10,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041273180] [2022-01-10 13:45:10,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:10,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:45:10,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:10,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:45:10,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:45:10,449 INFO L87 Difference]: Start difference. First operand 3343 states and 5561 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:10,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:10,743 INFO L93 Difference]: Finished difference Result 5135 states and 7947 transitions. [2022-01-10 13:45:10,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:45:10,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 13:45:10,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:10,753 INFO L225 Difference]: With dead ends: 5135 [2022-01-10 13:45:10,753 INFO L226 Difference]: Without dead ends: 3953 [2022-01-10 13:45:10,756 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 13:45:10,757 INFO L933 BasicCegarLoop]: 4910 mSDtfsCounter, 2369 mSDsluCounter, 13177 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2369 SdHoareTripleChecker+Valid, 18087 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:45:10,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2369 Valid, 18087 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:45:10,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2022-01-10 13:45:10,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 3349. [2022-01-10 13:45:10,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3349 states, 3347 states have (on average 1.6585001493875111) internal successors, (5551), 3348 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 5551 transitions. [2022-01-10 13:45:10,896 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 5551 transitions. Word has length 99 [2022-01-10 13:45:10,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:10,897 INFO L470 AbstractCegarLoop]: Abstraction has 3349 states and 5551 transitions. [2022-01-10 13:45:10,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:10,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 5551 transitions. [2022-01-10 13:45:10,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:45:10,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:10,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:10,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 13:45:10,899 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:10,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:10,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1818635031, now seen corresponding path program 1 times [2022-01-10 13:45:10,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:10,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559980231] [2022-01-10 13:45:10,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:10,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:10,953 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 13:45:10,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:10,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559980231] [2022-01-10 13:45:10,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559980231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:10,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:10,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:45:10,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516728261] [2022-01-10 13:45:10,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:10,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:45:10,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:10,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:45:10,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:45:10,955 INFO L87 Difference]: Start difference. First operand 3349 states and 5551 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:11,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:11,282 INFO L93 Difference]: Finished difference Result 5534 states and 8421 transitions. [2022-01-10 13:45:11,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:45:11,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 13:45:11,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:11,294 INFO L225 Difference]: With dead ends: 5534 [2022-01-10 13:45:11,294 INFO L226 Difference]: Without dead ends: 4381 [2022-01-10 13:45:11,298 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 13:45:11,299 INFO L933 BasicCegarLoop]: 4809 mSDtfsCounter, 1808 mSDsluCounter, 14197 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 19006 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:45:11,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1808 Valid, 19006 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:45:11,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2022-01-10 13:45:11,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 3355. [2022-01-10 13:45:11,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3355 states, 3353 states have (on average 1.6525499552639427) internal successors, (5541), 3354 states have internal predecessors, (5541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:11,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3355 states to 3355 states and 5541 transitions. [2022-01-10 13:45:11,452 INFO L78 Accepts]: Start accepts. Automaton has 3355 states and 5541 transitions. Word has length 99 [2022-01-10 13:45:11,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:11,452 INFO L470 AbstractCegarLoop]: Abstraction has 3355 states and 5541 transitions. [2022-01-10 13:45:11,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:11,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3355 states and 5541 transitions. [2022-01-10 13:45:11,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 13:45:11,453 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:11,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:11,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 13:45:11,454 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:11,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:11,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2125532328, now seen corresponding path program 1 times [2022-01-10 13:45:11,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:11,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494176567] [2022-01-10 13:45:11,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:11,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:11,509 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 13:45:11,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:11,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494176567] [2022-01-10 13:45:11,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494176567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:11,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:11,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:45:11,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561543772] [2022-01-10 13:45:11,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:11,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:11,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:11,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:11,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:11,512 INFO L87 Difference]: Start difference. First operand 3355 states and 5541 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:11,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:11,742 INFO L93 Difference]: Finished difference Result 5678 states and 8530 transitions. [2022-01-10 13:45:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:11,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-10 13:45:11,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:11,752 INFO L225 Difference]: With dead ends: 5678 [2022-01-10 13:45:11,753 INFO L226 Difference]: Without dead ends: 4472 [2022-01-10 13:45:11,756 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 13:45:11,757 INFO L933 BasicCegarLoop]: 4819 mSDtfsCounter, 4708 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4708 SdHoareTripleChecker+Valid, 5560 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:45:11,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4708 Valid, 5560 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:11,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2022-01-10 13:45:11,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 4370. [2022-01-10 13:45:11,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4370 states, 4368 states have (on average 1.5647893772893773) internal successors, (6835), 4369 states have internal predecessors, (6835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:11,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 6835 transitions. [2022-01-10 13:45:11,947 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 6835 transitions. Word has length 99 [2022-01-10 13:45:11,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:11,948 INFO L470 AbstractCegarLoop]: Abstraction has 4370 states and 6835 transitions. [2022-01-10 13:45:11,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:11,948 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 6835 transitions. [2022-01-10 13:45:11,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 13:45:11,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:11,951 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:11,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 13:45:11,951 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:11,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:11,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1987499719, now seen corresponding path program 1 times [2022-01-10 13:45:11,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:11,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428179909] [2022-01-10 13:45:11,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:11,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:12,014 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 13:45:12,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:12,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428179909] [2022-01-10 13:45:12,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428179909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:12,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:12,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:45:12,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218933728] [2022-01-10 13:45:12,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:12,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:12,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:12,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:12,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:12,016 INFO L87 Difference]: Start difference. First operand 4370 states and 6835 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:12,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:12,419 INFO L93 Difference]: Finished difference Result 8667 states and 12347 transitions. [2022-01-10 13:45:12,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:12,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2022-01-10 13:45:12,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:12,434 INFO L225 Difference]: With dead ends: 8667 [2022-01-10 13:45:12,434 INFO L226 Difference]: Without dead ends: 6452 [2022-01-10 13:45:12,438 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 13:45:12,439 INFO L933 BasicCegarLoop]: 4816 mSDtfsCounter, 4723 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 5557 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:45:12,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4723 Valid, 5557 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:12,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6452 states. [2022-01-10 13:45:12,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6452 to 6278. [2022-01-10 13:45:12,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6278 states, 6276 states have (on average 1.4765774378585086) internal successors, (9267), 6277 states have internal predecessors, (9267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:12,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 9267 transitions. [2022-01-10 13:45:12,782 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 9267 transitions. Word has length 160 [2022-01-10 13:45:12,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:12,782 INFO L470 AbstractCegarLoop]: Abstraction has 6278 states and 9267 transitions. [2022-01-10 13:45:12,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:12,782 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 9267 transitions. [2022-01-10 13:45:12,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 13:45:12,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:12,786 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:12,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 13:45:12,787 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:12,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:12,787 INFO L85 PathProgramCache]: Analyzing trace with hash 188793081, now seen corresponding path program 1 times [2022-01-10 13:45:12,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:12,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771801004] [2022-01-10 13:45:12,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:12,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:12,849 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 13:45:12,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:12,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771801004] [2022-01-10 13:45:12,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771801004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:12,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:12,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:45:12,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415243632] [2022-01-10 13:45:12,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:12,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:12,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:12,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:12,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:12,851 INFO L87 Difference]: Start difference. First operand 6278 states and 9267 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:13,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:13,391 INFO L93 Difference]: Finished difference Result 14139 states and 19223 transitions. [2022-01-10 13:45:13,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:13,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2022-01-10 13:45:13,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:13,422 INFO L225 Difference]: With dead ends: 14139 [2022-01-10 13:45:13,422 INFO L226 Difference]: Without dead ends: 10071 [2022-01-10 13:45:13,431 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 13:45:13,432 INFO L933 BasicCegarLoop]: 5220 mSDtfsCounter, 4583 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4583 SdHoareTripleChecker+Valid, 6070 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 13:45:13,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4583 Valid, 6070 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:13,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10071 states. [2022-01-10 13:45:13,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10071 to 10069. [2022-01-10 13:45:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10069 states, 10067 states have (on average 1.3893910797655706) internal successors, (13987), 10068 states have internal predecessors, (13987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:13,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10069 states to 10069 states and 13987 transitions. [2022-01-10 13:45:13,982 INFO L78 Accepts]: Start accepts. Automaton has 10069 states and 13987 transitions. Word has length 160 [2022-01-10 13:45:13,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:13,982 INFO L470 AbstractCegarLoop]: Abstraction has 10069 states and 13987 transitions. [2022-01-10 13:45:13,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:13,983 INFO L276 IsEmpty]: Start isEmpty. Operand 10069 states and 13987 transitions. [2022-01-10 13:45:13,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 13:45:13,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:13,989 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:13,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 13:45:13,989 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:13,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:13,990 INFO L85 PathProgramCache]: Analyzing trace with hash -116841448, now seen corresponding path program 1 times [2022-01-10 13:45:13,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:13,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478971209] [2022-01-10 13:45:13,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:13,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:14,028 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 13:45:14,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:14,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478971209] [2022-01-10 13:45:14,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478971209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:14,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:14,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:45:14,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048890301] [2022-01-10 13:45:14,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:14,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:14,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:14,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:14,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:14,030 INFO L87 Difference]: Start difference. First operand 10069 states and 13987 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:14,620 INFO L93 Difference]: Finished difference Result 17845 states and 23812 transitions. [2022-01-10 13:45:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:14,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 160 [2022-01-10 13:45:14,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:14,641 INFO L225 Difference]: With dead ends: 17845 [2022-01-10 13:45:14,641 INFO L226 Difference]: Without dead ends: 9986 [2022-01-10 13:45:14,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:14,652 INFO L933 BasicCegarLoop]: 4826 mSDtfsCounter, 864 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 8784 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 13:45:14,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 8784 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:14,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2022-01-10 13:45:15,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9986. [2022-01-10 13:45:15,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 9984 states have (on average 1.391025641025641) internal successors, (13888), 9985 states have internal predecessors, (13888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:15,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 13888 transitions. [2022-01-10 13:45:15,121 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 13888 transitions. Word has length 160 [2022-01-10 13:45:15,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:15,122 INFO L470 AbstractCegarLoop]: Abstraction has 9986 states and 13888 transitions. [2022-01-10 13:45:15,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:15,122 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 13888 transitions. [2022-01-10 13:45:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 13:45:15,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:15,128 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:15,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 13:45:15,128 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:15,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:15,129 INFO L85 PathProgramCache]: Analyzing trace with hash 886799409, now seen corresponding path program 1 times [2022-01-10 13:45:15,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:15,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61652646] [2022-01-10 13:45:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:15,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:15,177 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 13:45:15,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:15,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61652646] [2022-01-10 13:45:15,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61652646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:15,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:15,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:45:15,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625007546] [2022-01-10 13:45:15,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:15,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:15,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:15,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:15,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:15,179 INFO L87 Difference]: Start difference. First operand 9986 states and 13888 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:15,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:15,940 INFO L93 Difference]: Finished difference Result 25140 states and 32946 transitions. [2022-01-10 13:45:15,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:15,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2022-01-10 13:45:15,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:15,985 INFO L225 Difference]: With dead ends: 25140 [2022-01-10 13:45:15,985 INFO L226 Difference]: Without dead ends: 17364 [2022-01-10 13:45:16,004 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 13:45:16,005 INFO L933 BasicCegarLoop]: 5019 mSDtfsCounter, 4724 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4724 SdHoareTripleChecker+Valid, 5858 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 13:45:16,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4724 Valid, 5858 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:16,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17364 states. [2022-01-10 13:45:16,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17364 to 16850. [2022-01-10 13:45:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16850 states, 16848 states have (on average 1.331908831908832) internal successors, (22440), 16849 states have internal predecessors, (22440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16850 states to 16850 states and 22440 transitions. [2022-01-10 13:45:16,926 INFO L78 Accepts]: Start accepts. Automaton has 16850 states and 22440 transitions. Word has length 161 [2022-01-10 13:45:16,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:16,927 INFO L470 AbstractCegarLoop]: Abstraction has 16850 states and 22440 transitions. [2022-01-10 13:45:16,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:16,927 INFO L276 IsEmpty]: Start isEmpty. Operand 16850 states and 22440 transitions. [2022-01-10 13:45:16,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 13:45:16,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:16,936 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:16,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 13:45:16,936 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:16,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:16,937 INFO L85 PathProgramCache]: Analyzing trace with hash -456380654, now seen corresponding path program 1 times [2022-01-10 13:45:16,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:16,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408143948] [2022-01-10 13:45:16,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:16,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:16,969 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 13:45:16,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:16,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408143948] [2022-01-10 13:45:16,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408143948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:16,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:16,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:45:16,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342315516] [2022-01-10 13:45:16,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:16,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:16,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:16,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:16,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:16,971 INFO L87 Difference]: Start difference. First operand 16850 states and 22440 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:17,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:17,762 INFO L93 Difference]: Finished difference Result 31452 states and 40772 transitions. [2022-01-10 13:45:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:17,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 161 [2022-01-10 13:45:17,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:17,791 INFO L225 Difference]: With dead ends: 31452 [2022-01-10 13:45:17,791 INFO L226 Difference]: Without dead ends: 16768 [2022-01-10 13:45:17,814 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 13:45:17,815 INFO L933 BasicCegarLoop]: 4825 mSDtfsCounter, 862 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 8783 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 13:45:17,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 8783 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:17,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16768 states. [2022-01-10 13:45:18,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16768 to 16768. [2022-01-10 13:45:18,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16768 states, 16766 states have (on average 1.3326374806155314) internal successors, (22343), 16767 states have internal predecessors, (22343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16768 states to 16768 states and 22343 transitions. [2022-01-10 13:45:18,694 INFO L78 Accepts]: Start accepts. Automaton has 16768 states and 22343 transitions. Word has length 161 [2022-01-10 13:45:18,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:18,694 INFO L470 AbstractCegarLoop]: Abstraction has 16768 states and 22343 transitions. [2022-01-10 13:45:18,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:18,694 INFO L276 IsEmpty]: Start isEmpty. Operand 16768 states and 22343 transitions. [2022-01-10 13:45:18,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 13:45:18,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:18,702 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:18,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 13:45:18,703 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:18,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:18,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1966576152, now seen corresponding path program 1 times [2022-01-10 13:45:18,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:18,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724808184] [2022-01-10 13:45:18,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:18,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:18,757 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 13:45:18,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:18,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724808184] [2022-01-10 13:45:18,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724808184] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:18,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:18,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:45:18,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869229966] [2022-01-10 13:45:18,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:18,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:18,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:18,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:18,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:18,759 INFO L87 Difference]: Start difference. First operand 16768 states and 22343 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:20,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:20,107 INFO L93 Difference]: Finished difference Result 44901 states and 57575 transitions. [2022-01-10 13:45:20,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:20,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2022-01-10 13:45:20,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:20,149 INFO L225 Difference]: With dead ends: 44901 [2022-01-10 13:45:20,149 INFO L226 Difference]: Without dead ends: 30343 [2022-01-10 13:45:20,167 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 13:45:20,167 INFO L933 BasicCegarLoop]: 5020 mSDtfsCounter, 4724 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4724 SdHoareTripleChecker+Valid, 5857 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 13:45:20,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4724 Valid, 5857 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:20,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30343 states. [2022-01-10 13:45:21,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30343 to 29541. [2022-01-10 13:45:21,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29541 states, 29539 states have (on average 1.2947290023358948) internal successors, (38245), 29540 states have internal predecessors, (38245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:21,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29541 states to 29541 states and 38245 transitions. [2022-01-10 13:45:21,717 INFO L78 Accepts]: Start accepts. Automaton has 29541 states and 38245 transitions. Word has length 162 [2022-01-10 13:45:21,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:21,717 INFO L470 AbstractCegarLoop]: Abstraction has 29541 states and 38245 transitions. [2022-01-10 13:45:21,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:21,718 INFO L276 IsEmpty]: Start isEmpty. Operand 29541 states and 38245 transitions. [2022-01-10 13:45:21,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 13:45:21,731 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:21,731 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:21,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 13:45:21,732 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:21,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:21,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1912459259, now seen corresponding path program 1 times [2022-01-10 13:45:21,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:21,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291120003] [2022-01-10 13:45:21,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:21,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:21,762 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 13:45:21,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:21,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291120003] [2022-01-10 13:45:21,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291120003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:21,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:21,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:45:21,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773261518] [2022-01-10 13:45:21,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:21,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:21,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:21,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:21,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:21,766 INFO L87 Difference]: Start difference. First operand 29541 states and 38245 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:23,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:23,240 INFO L93 Difference]: Finished difference Result 56828 states and 72376 transitions. [2022-01-10 13:45:23,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:23,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 162 [2022-01-10 13:45:23,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:23,375 INFO L225 Difference]: With dead ends: 56828 [2022-01-10 13:45:23,375 INFO L226 Difference]: Without dead ends: 29460 [2022-01-10 13:45:23,392 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 13:45:23,393 INFO L933 BasicCegarLoop]: 4824 mSDtfsCounter, 860 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 8782 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 13:45:23,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 8782 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:23,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29460 states. [2022-01-10 13:45:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29460 to 29460. [2022-01-10 13:45:24,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29460 states, 29458 states have (on average 1.295064159141829) internal successors, (38150), 29459 states have internal predecessors, (38150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:24,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29460 states to 29460 states and 38150 transitions. [2022-01-10 13:45:24,992 INFO L78 Accepts]: Start accepts. Automaton has 29460 states and 38150 transitions. Word has length 162 [2022-01-10 13:45:24,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:24,992 INFO L470 AbstractCegarLoop]: Abstraction has 29460 states and 38150 transitions. [2022-01-10 13:45:24,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:24,992 INFO L276 IsEmpty]: Start isEmpty. Operand 29460 states and 38150 transitions. [2022-01-10 13:45:25,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 13:45:25,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:25,003 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:25,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 13:45:25,003 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:25,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:25,004 INFO L85 PathProgramCache]: Analyzing trace with hash 40185600, now seen corresponding path program 1 times [2022-01-10 13:45:25,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:25,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031257285] [2022-01-10 13:45:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:25,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:25,069 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 13:45:25,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:25,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031257285] [2022-01-10 13:45:25,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031257285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:25,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:25,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:45:25,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121072557] [2022-01-10 13:45:25,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:25,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:25,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:25,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:25,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:25,072 INFO L87 Difference]: Start difference. First operand 29460 states and 38150 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:27,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:27,893 INFO L93 Difference]: Finished difference Result 81560 states and 103188 transitions. [2022-01-10 13:45:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:27,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2022-01-10 13:45:27,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:27,986 INFO L225 Difference]: With dead ends: 81560 [2022-01-10 13:45:27,986 INFO L226 Difference]: Without dead ends: 54310 [2022-01-10 13:45:28,018 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 13:45:28,019 INFO L933 BasicCegarLoop]: 5005 mSDtfsCounter, 4654 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4654 SdHoareTripleChecker+Valid, 5840 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:45:28,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4654 Valid, 5840 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:28,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54310 states. [2022-01-10 13:45:31,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54310 to 53156. [2022-01-10 13:45:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53156 states, 53154 states have (on average 1.27181397448922) internal successors, (67602), 53155 states have internal predecessors, (67602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:31,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53156 states to 53156 states and 67602 transitions. [2022-01-10 13:45:31,139 INFO L78 Accepts]: Start accepts. Automaton has 53156 states and 67602 transitions. Word has length 163 [2022-01-10 13:45:31,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:31,139 INFO L470 AbstractCegarLoop]: Abstraction has 53156 states and 67602 transitions. [2022-01-10 13:45:31,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:31,139 INFO L276 IsEmpty]: Start isEmpty. Operand 53156 states and 67602 transitions. [2022-01-10 13:45:31,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 13:45:31,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:31,162 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:31,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 13:45:31,162 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:31,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:31,163 INFO L85 PathProgramCache]: Analyzing trace with hash 811104480, now seen corresponding path program 1 times [2022-01-10 13:45:31,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:31,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809490665] [2022-01-10 13:45:31,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:31,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:31,197 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 13:45:31,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:31,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809490665] [2022-01-10 13:45:31,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809490665] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:31,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:31,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:45:31,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139807556] [2022-01-10 13:45:31,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:31,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:31,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:31,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:31,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:31,199 INFO L87 Difference]: Start difference. First operand 53156 states and 67602 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:34,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:34,295 INFO L93 Difference]: Finished difference Result 104052 states and 131084 transitions. [2022-01-10 13:45:34,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:34,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2022-01-10 13:45:34,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:34,383 INFO L225 Difference]: With dead ends: 104052 [2022-01-10 13:45:34,384 INFO L226 Difference]: Without dead ends: 53076 [2022-01-10 13:45:34,419 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 13:45:34,419 INFO L933 BasicCegarLoop]: 4823 mSDtfsCounter, 858 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 8781 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 13:45:34,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 8781 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:34,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53076 states. [2022-01-10 13:45:37,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53076 to 53076. [2022-01-10 13:45:37,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53076 states, 53074 states have (on average 1.271978746655613) internal successors, (67509), 53075 states have internal predecessors, (67509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:37,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53076 states to 53076 states and 67509 transitions. [2022-01-10 13:45:37,546 INFO L78 Accepts]: Start accepts. Automaton has 53076 states and 67509 transitions. Word has length 163 [2022-01-10 13:45:37,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:45:37,546 INFO L470 AbstractCegarLoop]: Abstraction has 53076 states and 67509 transitions. [2022-01-10 13:45:37,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:37,546 INFO L276 IsEmpty]: Start isEmpty. Operand 53076 states and 67509 transitions. [2022-01-10 13:45:37,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 13:45:37,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:45:37,566 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:45:37,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 13:45:37,566 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:45:37,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:45:37,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1769434718, now seen corresponding path program 1 times [2022-01-10 13:45:37,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:45:37,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718683540] [2022-01-10 13:45:37,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:45:37,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:45:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:45:37,627 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 13:45:37,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:45:37,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718683540] [2022-01-10 13:45:37,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718683540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:45:37,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:45:37,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:45:37,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025632906] [2022-01-10 13:45:37,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:45:37,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:45:37,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:45:37,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:45:37,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:45:37,629 INFO L87 Difference]: Start difference. First operand 53076 states and 67509 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:45:42,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:45:42,638 INFO L93 Difference]: Finished difference Result 149103 states and 187025 transitions. [2022-01-10 13:45:42,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:45:42,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2022-01-10 13:45:42,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:45:42,790 INFO L225 Difference]: With dead ends: 149103 [2022-01-10 13:45:42,790 INFO L226 Difference]: Without dead ends: 98237 [2022-01-10 13:45:42,838 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 13:45:42,839 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 4724 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4724 SdHoareTripleChecker+Valid, 5801 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:45:42,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4724 Valid, 5801 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:45:42,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98237 states.