/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.04.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:18:33,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:18:33,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:18:33,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 01:18:33,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 01:18:33,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 01:18:33,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 01:18:33,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 01:18:33,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 01:18:33,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 01:18:33,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 01:18:33,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 01:18:33,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:18:33,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:18:33,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:18:33,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:18:33,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:18:33,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:18:33,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:18:33,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:18:33,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:18:33,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:18:33,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:18:33,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:18:33,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 01:18:33,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:18:33,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:18:33,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:18:33,730 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 01:18:33,751 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:18:33,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:18:33,752 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:18:33,752 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:18:33,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:18:33,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:18:33,753 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:18:33,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:18:33,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:18:33,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:18:33,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:18:33,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:18:33,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:18:33,755 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:18:33,755 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:18:33,755 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:18:33,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:18:33,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:18:33,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:18:33,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:18:33,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:18:33,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:18:33,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:18:33,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:18:33,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:18:33,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:18:33,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:18:33,757 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:18:33,757 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:18:33,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:18:33,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:18:33,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:18:33,759 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:18:33,763 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:18:33,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:18:33,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:18:34,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:18:34,003 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:18:34,003 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:18:34,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.04.cil-2.c [2022-01-11 01:18:34,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8874a4ba4/7afaf92a0516441abefbd79f46e52d45/FLAG7a7e244b3 [2022-01-11 01:18:34,895 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:18:34,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.04.cil-2.c [2022-01-11 01:18:34,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8874a4ba4/7afaf92a0516441abefbd79f46e52d45/FLAG7a7e244b3 [2022-01-11 01:18:35,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8874a4ba4/7afaf92a0516441abefbd79f46e52d45 [2022-01-11 01:18:35,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:18:35,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:18:35,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:18:35,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:18:35,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:18:35,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:18:35" (1/1) ... [2022-01-11 01:18:35,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@646620ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:35, skipping insertion in model container [2022-01-11 01:18:35,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:18:35" (1/1) ... [2022-01-11 01:18:35,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:18:35,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:18:36,887 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.04.cil-2.c[382357,382370] [2022-01-11 01:18:36,907 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.04.cil-2.c[383339,383352] [2022-01-11 01:18:37,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:18:37,074 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:18:37,826 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.04.cil-2.c[382357,382370] [2022-01-11 01:18:37,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.04.cil-2.c[383339,383352] [2022-01-11 01:18:37,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:18:37,908 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:18:37,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:37 WrapperNode [2022-01-11 01:18:37,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:18:37,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:18:37,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:18:37,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:18:37,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:37" (1/1) ... [2022-01-11 01:18:38,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:37" (1/1) ... [2022-01-11 01:18:38,414 INFO L137 Inliner]: procedures = 53, calls = 54, calls flagged for inlining = 49, calls inlined = 88, statements flattened = 13409 [2022-01-11 01:18:38,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:18:38,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:18:38,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:18:38,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:18:38,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:37" (1/1) ... [2022-01-11 01:18:38,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:37" (1/1) ... [2022-01-11 01:18:38,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:37" (1/1) ... [2022-01-11 01:18:38,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:37" (1/1) ... [2022-01-11 01:18:38,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:37" (1/1) ... [2022-01-11 01:18:38,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:37" (1/1) ... [2022-01-11 01:18:38,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:37" (1/1) ... [2022-01-11 01:18:38,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:18:38,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:18:38,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:18:38,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:18:38,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:37" (1/1) ... [2022-01-11 01:18:38,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:18:38,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:18:38,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 01:18:38,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 01:18:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:18:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:18:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:18:38,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:18:39,056 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:18:39,058 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:18:47,236 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:18:47,271 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:18:47,271 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-11 01:18:47,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:18:47 BoogieIcfgContainer [2022-01-11 01:18:47,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:18:47,276 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:18:47,276 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:18:47,277 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:18:47,280 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:18:47" (1/1) ... [2022-01-11 01:18:48,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:18:48 BasicIcfg [2022-01-11 01:18:48,786 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:18:48,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:18:48,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:18:48,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:18:48,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:18:35" (1/4) ... [2022-01-11 01:18:48,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c1ecc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:18:48, skipping insertion in model container [2022-01-11 01:18:48,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:18:37" (2/4) ... [2022-01-11 01:18:48,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c1ecc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:18:48, skipping insertion in model container [2022-01-11 01:18:48,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:18:47" (3/4) ... [2022-01-11 01:18:48,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c1ecc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:18:48, skipping insertion in model container [2022-01-11 01:18:48,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:18:48" (4/4) ... [2022-01-11 01:18:48,793 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.04.cil-2.cTransformedIcfg [2022-01-11 01:18:48,797 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:18:48,797 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-11 01:18:48,856 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:18:48,861 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 01:18:48,861 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-11 01:18:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 2623 states, 2619 states have (on average 1.8163421153111874) internal successors, (4757), 2622 states have internal predecessors, (4757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:48,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:18:48,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:48,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:48,931 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:48,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:48,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1615525701, now seen corresponding path program 1 times [2022-01-11 01:18:48,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:48,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356984369] [2022-01-11 01:18:48,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:48,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:49,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:49,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:49,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356984369] [2022-01-11 01:18:49,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356984369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:49,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:49,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:49,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820239098] [2022-01-11 01:18:49,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:49,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:49,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:49,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:49,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:49,216 INFO L87 Difference]: Start difference. First operand has 2623 states, 2619 states have (on average 1.8163421153111874) internal successors, (4757), 2622 states have internal predecessors, (4757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:49,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:49,464 INFO L93 Difference]: Finished difference Result 5567 states and 10005 transitions. [2022-01-11 01:18:49,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:49,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:18:49,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:49,496 INFO L225 Difference]: With dead ends: 5567 [2022-01-11 01:18:49,496 INFO L226 Difference]: Without dead ends: 2885 [2022-01-11 01:18:49,503 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 [2022-01-11 01:18:49,507 INFO L933 BasicCegarLoop]: 4670 mSDtfsCounter, 4607 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4607 SdHoareTripleChecker+Valid, 5212 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:49,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4607 Valid, 5212 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:18:49,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2022-01-11 01:18:49,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2881. [2022-01-11 01:18:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7699791521890202) internal successors, (5094), 2880 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5094 transitions. [2022-01-11 01:18:49,644 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5094 transitions. Word has length 77 [2022-01-11 01:18:49,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:49,645 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5094 transitions. [2022-01-11 01:18:49,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:49,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5094 transitions. [2022-01-11 01:18:49,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:18:49,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:49,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:49,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:18:49,648 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:49,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:49,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1319816293, now seen corresponding path program 1 times [2022-01-11 01:18:49,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:49,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554939976] [2022-01-11 01:18:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:49,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:49,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:49,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554939976] [2022-01-11 01:18:49,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554939976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:49,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:49,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:49,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676588098] [2022-01-11 01:18:49,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:49,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:49,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:49,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:49,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:49,763 INFO L87 Difference]: Start difference. First operand 2881 states and 5094 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:49,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:49,839 INFO L93 Difference]: Finished difference Result 3629 states and 6212 transitions. [2022-01-11 01:18:49,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:49,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:18:49,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:49,851 INFO L225 Difference]: With dead ends: 3629 [2022-01-11 01:18:49,852 INFO L226 Difference]: Without dead ends: 2881 [2022-01-11 01:18:49,855 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 [2022-01-11 01:18:49,856 INFO L933 BasicCegarLoop]: 4597 mSDtfsCounter, 4590 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4590 SdHoareTripleChecker+Valid, 4597 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 [2022-01-11 01:18:49,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4590 Valid, 4597 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:49,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-11 01:18:49,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-11 01:18:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7671994440583738) internal successors, (5086), 2880 states have internal predecessors, (5086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5086 transitions. [2022-01-11 01:18:49,934 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5086 transitions. Word has length 77 [2022-01-11 01:18:49,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:49,934 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5086 transitions. [2022-01-11 01:18:49,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:49,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5086 transitions. [2022-01-11 01:18:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:18:49,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:49,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:49,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:18:49,948 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:49,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:49,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1737764027, now seen corresponding path program 1 times [2022-01-11 01:18:49,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:49,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248602986] [2022-01-11 01:18:49,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:49,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:49,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:49,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248602986] [2022-01-11 01:18:49,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248602986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:49,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:49,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:49,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065018008] [2022-01-11 01:18:49,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:49,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:49,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:49,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:49,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:49,999 INFO L87 Difference]: Start difference. First operand 2881 states and 5086 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:50,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:50,060 INFO L93 Difference]: Finished difference Result 3628 states and 6195 transitions. [2022-01-11 01:18:50,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:50,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:18:50,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:50,072 INFO L225 Difference]: With dead ends: 3628 [2022-01-11 01:18:50,072 INFO L226 Difference]: Without dead ends: 2881 [2022-01-11 01:18:50,076 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 [2022-01-11 01:18:50,080 INFO L933 BasicCegarLoop]: 4592 mSDtfsCounter, 4584 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4584 SdHoareTripleChecker+Valid, 4592 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 [2022-01-11 01:18:50,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4584 Valid, 4592 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:50,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-11 01:18:50,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-11 01:18:50,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7644197359277276) internal successors, (5078), 2880 states have internal predecessors, (5078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:50,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5078 transitions. [2022-01-11 01:18:50,152 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5078 transitions. Word has length 77 [2022-01-11 01:18:50,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:50,154 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5078 transitions. [2022-01-11 01:18:50,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:50,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5078 transitions. [2022-01-11 01:18:50,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:18:50,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:50,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:50,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 01:18:50,157 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:50,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:50,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1627287653, now seen corresponding path program 1 times [2022-01-11 01:18:50,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:50,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985402074] [2022-01-11 01:18:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:50,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:50,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:50,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985402074] [2022-01-11 01:18:50,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985402074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:50,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:50,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:50,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751233850] [2022-01-11 01:18:50,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:50,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:50,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:50,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:50,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:50,262 INFO L87 Difference]: Start difference. First operand 2881 states and 5078 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:50,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:50,327 INFO L93 Difference]: Finished difference Result 3627 states and 6178 transitions. [2022-01-11 01:18:50,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:50,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:18:50,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:50,337 INFO L225 Difference]: With dead ends: 3627 [2022-01-11 01:18:50,337 INFO L226 Difference]: Without dead ends: 2881 [2022-01-11 01:18:50,339 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 [2022-01-11 01:18:50,345 INFO L933 BasicCegarLoop]: 4587 mSDtfsCounter, 4578 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 4587 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 [2022-01-11 01:18:50,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4578 Valid, 4587 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:50,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-11 01:18:50,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-11 01:18:50,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7616400277970814) internal successors, (5070), 2880 states have internal predecessors, (5070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:50,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5070 transitions. [2022-01-11 01:18:50,412 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5070 transitions. Word has length 77 [2022-01-11 01:18:50,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:50,412 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5070 transitions. [2022-01-11 01:18:50,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:50,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5070 transitions. [2022-01-11 01:18:50,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:18:50,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:50,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:50,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 01:18:50,413 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:50,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash -619466939, now seen corresponding path program 1 times [2022-01-11 01:18:50,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:50,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387609523] [2022-01-11 01:18:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:50,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:50,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:50,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387609523] [2022-01-11 01:18:50,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387609523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:50,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:50,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:50,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531632066] [2022-01-11 01:18:50,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:50,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:50,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:50,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:50,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:50,463 INFO L87 Difference]: Start difference. First operand 2881 states and 5070 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:50,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:50,663 INFO L93 Difference]: Finished difference Result 3626 states and 6161 transitions. [2022-01-11 01:18:50,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:50,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:18:50,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:50,673 INFO L225 Difference]: With dead ends: 3626 [2022-01-11 01:18:50,674 INFO L226 Difference]: Without dead ends: 2881 [2022-01-11 01:18:50,675 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 [2022-01-11 01:18:50,676 INFO L933 BasicCegarLoop]: 4582 mSDtfsCounter, 4572 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4572 SdHoareTripleChecker+Valid, 4582 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 [2022-01-11 01:18:50,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4572 Valid, 4582 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:50,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-11 01:18:50,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-11 01:18:50,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.758860319666435) internal successors, (5062), 2880 states have internal predecessors, (5062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:50,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5062 transitions. [2022-01-11 01:18:50,740 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5062 transitions. Word has length 77 [2022-01-11 01:18:50,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:50,743 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5062 transitions. [2022-01-11 01:18:50,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:50,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5062 transitions. [2022-01-11 01:18:50,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:18:50,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:50,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:50,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 01:18:50,751 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:50,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:50,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2079003749, now seen corresponding path program 1 times [2022-01-11 01:18:50,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:50,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557226403] [2022-01-11 01:18:50,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:50,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:50,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:50,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557226403] [2022-01-11 01:18:50,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557226403] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:50,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:50,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:50,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072832105] [2022-01-11 01:18:50,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:50,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:50,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:50,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:50,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:50,801 INFO L87 Difference]: Start difference. First operand 2881 states and 5062 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:50,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:50,906 INFO L93 Difference]: Finished difference Result 3625 states and 6144 transitions. [2022-01-11 01:18:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:50,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:18:50,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:50,917 INFO L225 Difference]: With dead ends: 3625 [2022-01-11 01:18:50,917 INFO L226 Difference]: Without dead ends: 2881 [2022-01-11 01:18:50,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:50,920 INFO L933 BasicCegarLoop]: 4563 mSDtfsCounter, 4507 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4507 SdHoareTripleChecker+Valid, 4611 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:50,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4507 Valid, 4611 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:50,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-11 01:18:50,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-11 01:18:50,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7519110493398193) internal successors, (5042), 2880 states have internal predecessors, (5042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5042 transitions. [2022-01-11 01:18:51,010 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5042 transitions. Word has length 77 [2022-01-11 01:18:51,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:51,011 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5042 transitions. [2022-01-11 01:18:51,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:51,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5042 transitions. [2022-01-11 01:18:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:18:51,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:51,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:51,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 01:18:51,013 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:51,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:51,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2072894916, now seen corresponding path program 1 times [2022-01-11 01:18:51,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:51,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498183036] [2022-01-11 01:18:51,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:51,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:51,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:51,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:51,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498183036] [2022-01-11 01:18:51,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498183036] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:51,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:51,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:51,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241685519] [2022-01-11 01:18:51,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:51,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:51,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:51,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:51,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:51,070 INFO L87 Difference]: Start difference. First operand 2881 states and 5042 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:51,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:51,153 INFO L93 Difference]: Finished difference Result 3624 states and 6103 transitions. [2022-01-11 01:18:51,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:51,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:18:51,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:51,165 INFO L225 Difference]: With dead ends: 3624 [2022-01-11 01:18:51,165 INFO L226 Difference]: Without dead ends: 2881 [2022-01-11 01:18:51,167 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 [2022-01-11 01:18:51,168 INFO L933 BasicCegarLoop]: 4551 mSDtfsCounter, 4495 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4495 SdHoareTripleChecker+Valid, 4598 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:51,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4495 Valid, 4598 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:51,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-11 01:18:51,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-11 01:18:51,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7449617790132037) internal successors, (5022), 2880 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5022 transitions. [2022-01-11 01:18:51,232 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5022 transitions. Word has length 77 [2022-01-11 01:18:51,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:51,234 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5022 transitions. [2022-01-11 01:18:51,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:51,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5022 transitions. [2022-01-11 01:18:51,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:18:51,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:51,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:51,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 01:18:51,236 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:51,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:51,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1034229597, now seen corresponding path program 1 times [2022-01-11 01:18:51,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:51,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190316529] [2022-01-11 01:18:51,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:51,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:51,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:51,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190316529] [2022-01-11 01:18:51,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190316529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:51,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:51,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:51,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188281957] [2022-01-11 01:18:51,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:51,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:51,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:51,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:51,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:51,271 INFO L87 Difference]: Start difference. First operand 2881 states and 5022 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:51,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:51,350 INFO L93 Difference]: Finished difference Result 3623 states and 6062 transitions. [2022-01-11 01:18:51,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:51,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:18:51,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:51,374 INFO L225 Difference]: With dead ends: 3623 [2022-01-11 01:18:51,374 INFO L226 Difference]: Without dead ends: 2881 [2022-01-11 01:18:51,376 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 [2022-01-11 01:18:51,377 INFO L933 BasicCegarLoop]: 4539 mSDtfsCounter, 4483 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4483 SdHoareTripleChecker+Valid, 4585 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:51,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4483 Valid, 4585 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:51,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-11 01:18:51,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-11 01:18:51,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7380125086865879) internal successors, (5002), 2880 states have internal predecessors, (5002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:51,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5002 transitions. [2022-01-11 01:18:51,441 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5002 transitions. Word has length 77 [2022-01-11 01:18:51,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:51,441 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5002 transitions. [2022-01-11 01:18:51,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:51,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5002 transitions. [2022-01-11 01:18:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:18:51,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:51,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:51,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 01:18:51,443 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:51,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:51,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1951502206, now seen corresponding path program 1 times [2022-01-11 01:18:51,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:51,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383849303] [2022-01-11 01:18:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:51,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:51,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:51,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383849303] [2022-01-11 01:18:51,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383849303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:51,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:51,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:51,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686085199] [2022-01-11 01:18:51,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:51,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:51,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:51,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:51,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:51,481 INFO L87 Difference]: Start difference. First operand 2881 states and 5002 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:51,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:51,561 INFO L93 Difference]: Finished difference Result 3622 states and 6021 transitions. [2022-01-11 01:18:51,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:51,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:18:51,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:51,568 INFO L225 Difference]: With dead ends: 3622 [2022-01-11 01:18:51,568 INFO L226 Difference]: Without dead ends: 2881 [2022-01-11 01:18:51,570 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 [2022-01-11 01:18:51,571 INFO L933 BasicCegarLoop]: 4527 mSDtfsCounter, 4471 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4471 SdHoareTripleChecker+Valid, 4572 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:51,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4471 Valid, 4572 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:51,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-11 01:18:51,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-11 01:18:51,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7310632383599722) internal successors, (4982), 2880 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:51,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 4982 transitions. [2022-01-11 01:18:51,640 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 4982 transitions. Word has length 77 [2022-01-11 01:18:51,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:51,640 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 4982 transitions. [2022-01-11 01:18:51,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:51,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 4982 transitions. [2022-01-11 01:18:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:18:51,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:51,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:51,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 01:18:51,644 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:51,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:51,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1701554657, now seen corresponding path program 1 times [2022-01-11 01:18:51,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:51,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240299298] [2022-01-11 01:18:51,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:51,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:51,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:51,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:51,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240299298] [2022-01-11 01:18:51,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240299298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:51,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:51,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:51,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858090557] [2022-01-11 01:18:51,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:51,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:51,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:51,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:51,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:51,687 INFO L87 Difference]: Start difference. First operand 2881 states and 4982 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:51,764 INFO L93 Difference]: Finished difference Result 3621 states and 5980 transitions. [2022-01-11 01:18:51,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:51,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:18:51,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:51,770 INFO L225 Difference]: With dead ends: 3621 [2022-01-11 01:18:51,770 INFO L226 Difference]: Without dead ends: 2881 [2022-01-11 01:18:51,772 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 [2022-01-11 01:18:51,772 INFO L933 BasicCegarLoop]: 4515 mSDtfsCounter, 4459 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4459 SdHoareTripleChecker+Valid, 4559 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:51,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4459 Valid, 4559 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:51,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-11 01:18:51,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-11 01:18:51,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7241139680333566) internal successors, (4962), 2880 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:51,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 4962 transitions. [2022-01-11 01:18:51,842 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 4962 transitions. Word has length 77 [2022-01-11 01:18:51,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:51,842 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 4962 transitions. [2022-01-11 01:18:51,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:51,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 4962 transitions. [2022-01-11 01:18:51,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:18:51,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:51,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:51,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 01:18:51,844 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:51,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:51,845 INFO L85 PathProgramCache]: Analyzing trace with hash -2100056000, now seen corresponding path program 1 times [2022-01-11 01:18:51,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:51,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749419111] [2022-01-11 01:18:51,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:51,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:51,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:51,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749419111] [2022-01-11 01:18:51,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749419111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:51,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:51,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:18:51,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915910292] [2022-01-11 01:18:51,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:51,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:18:51,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:51,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:18:51,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:18:51,906 INFO L87 Difference]: Start difference. First operand 2881 states and 4962 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:52,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:52,151 INFO L93 Difference]: Finished difference Result 4069 states and 6563 transitions. [2022-01-11 01:18:52,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:18:52,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:18:52,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:52,159 INFO L225 Difference]: With dead ends: 4069 [2022-01-11 01:18:52,159 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:18:52,161 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 [2022-01-11 01:18:52,162 INFO L933 BasicCegarLoop]: 4559 mSDtfsCounter, 1465 mSDsluCounter, 12888 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 17447 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:52,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1465 Valid, 17447 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:18:52,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:18:52,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 2887. [2022-01-11 01:18:52,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2884 states have (on average 1.7184466019417475) internal successors, (4956), 2886 states have internal predecessors, (4956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:52,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 4956 transitions. [2022-01-11 01:18:52,335 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 4956 transitions. Word has length 77 [2022-01-11 01:18:52,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:52,335 INFO L470 AbstractCegarLoop]: Abstraction has 2887 states and 4956 transitions. [2022-01-11 01:18:52,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:52,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 4956 transitions. [2022-01-11 01:18:52,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:18:52,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:52,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:52,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 01:18:52,337 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:52,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:52,337 INFO L85 PathProgramCache]: Analyzing trace with hash 494170817, now seen corresponding path program 1 times [2022-01-11 01:18:52,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:52,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141298287] [2022-01-11 01:18:52,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:52,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:52,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:52,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141298287] [2022-01-11 01:18:52,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141298287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:52,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:52,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:18:52,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061021322] [2022-01-11 01:18:52,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:52,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:52,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:52,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:52,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:52,383 INFO L87 Difference]: Start difference. First operand 2887 states and 4956 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:52,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:52,526 INFO L93 Difference]: Finished difference Result 4296 states and 6795 transitions. [2022-01-11 01:18:52,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:52,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-11 01:18:52,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:52,536 INFO L225 Difference]: With dead ends: 4296 [2022-01-11 01:18:52,536 INFO L226 Difference]: Without dead ends: 3552 [2022-01-11 01:18:52,538 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 [2022-01-11 01:18:52,539 INFO L933 BasicCegarLoop]: 4509 mSDtfsCounter, 4411 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4411 SdHoareTripleChecker+Valid, 4971 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:52,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4411 Valid, 4971 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:52,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2022-01-11 01:18:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3478. [2022-01-11 01:18:52,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 3475 states have (on average 1.6446043165467625) internal successors, (5715), 3477 states have internal predecessors, (5715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 5715 transitions. [2022-01-11 01:18:52,659 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 5715 transitions. Word has length 77 [2022-01-11 01:18:52,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:52,660 INFO L470 AbstractCegarLoop]: Abstraction has 3478 states and 5715 transitions. [2022-01-11 01:18:52,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:52,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 5715 transitions. [2022-01-11 01:18:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 01:18:52,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:52,663 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:52,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 01:18:52,663 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:52,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:52,663 INFO L85 PathProgramCache]: Analyzing trace with hash 58765366, now seen corresponding path program 1 times [2022-01-11 01:18:52,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:52,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234994899] [2022-01-11 01:18:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:52,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:52,720 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:52,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:52,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234994899] [2022-01-11 01:18:52,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234994899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:52,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:52,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:52,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416550072] [2022-01-11 01:18:52,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:52,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:52,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:52,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:52,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:52,722 INFO L87 Difference]: Start difference. First operand 3478 states and 5715 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:52,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:52,913 INFO L93 Difference]: Finished difference Result 6029 states and 9032 transitions. [2022-01-11 01:18:52,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:52,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-11 01:18:52,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:52,922 INFO L225 Difference]: With dead ends: 6029 [2022-01-11 01:18:52,922 INFO L226 Difference]: Without dead ends: 4700 [2022-01-11 01:18:52,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:52,926 INFO L933 BasicCegarLoop]: 4506 mSDtfsCounter, 4431 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4431 SdHoareTripleChecker+Valid, 4968 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:52,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4431 Valid, 4968 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:52,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4700 states. [2022-01-11 01:18:53,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4700 to 4580. [2022-01-11 01:18:53,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4580 states, 4577 states have (on average 1.5597552982302818) internal successors, (7139), 4579 states have internal predecessors, (7139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:53,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 7139 transitions. [2022-01-11 01:18:53,089 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 7139 transitions. Word has length 124 [2022-01-11 01:18:53,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:53,090 INFO L470 AbstractCegarLoop]: Abstraction has 4580 states and 7139 transitions. [2022-01-11 01:18:53,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:53,090 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 7139 transitions. [2022-01-11 01:18:53,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 01:18:53,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:53,092 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:53,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 01:18:53,093 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:53,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:53,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2055677962, now seen corresponding path program 1 times [2022-01-11 01:18:53,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:53,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742093356] [2022-01-11 01:18:53,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:53,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:53,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:53,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742093356] [2022-01-11 01:18:53,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742093356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:53,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:53,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:18:53,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586229211] [2022-01-11 01:18:53,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:53,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:18:53,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:53,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:18:53,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:18:53,161 INFO L87 Difference]: Start difference. First operand 4580 states and 7139 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:53,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:53,671 INFO L93 Difference]: Finished difference Result 9128 states and 13113 transitions. [2022-01-11 01:18:53,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:18:53,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-11 01:18:53,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:53,686 INFO L225 Difference]: With dead ends: 9128 [2022-01-11 01:18:53,686 INFO L226 Difference]: Without dead ends: 6722 [2022-01-11 01:18:53,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:18:53,692 INFO L933 BasicCegarLoop]: 4492 mSDtfsCounter, 1180 mSDsluCounter, 13320 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 17812 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:53,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 17812 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:18:53,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6722 states. [2022-01-11 01:18:53,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6722 to 4604. [2022-01-11 01:18:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4604 states, 4601 states have (on average 1.5487937404911976) internal successors, (7126), 4603 states have internal predecessors, (7126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:53,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4604 states to 4604 states and 7126 transitions. [2022-01-11 01:18:53,973 INFO L78 Accepts]: Start accepts. Automaton has 4604 states and 7126 transitions. Word has length 124 [2022-01-11 01:18:53,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:53,973 INFO L470 AbstractCegarLoop]: Abstraction has 4604 states and 7126 transitions. [2022-01-11 01:18:53,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:53,974 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states and 7126 transitions. [2022-01-11 01:18:53,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 01:18:53,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:53,976 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:53,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 01:18:53,977 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:53,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:53,977 INFO L85 PathProgramCache]: Analyzing trace with hash -2020890764, now seen corresponding path program 1 times [2022-01-11 01:18:53,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:53,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945000132] [2022-01-11 01:18:53,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:53,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:54,041 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:54,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:54,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945000132] [2022-01-11 01:18:54,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945000132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:54,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:54,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:54,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874671039] [2022-01-11 01:18:54,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:54,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:54,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:54,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:54,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:54,044 INFO L87 Difference]: Start difference. First operand 4604 states and 7126 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:54,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:54,422 INFO L93 Difference]: Finished difference Result 9245 states and 12998 transitions. [2022-01-11 01:18:54,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:54,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-11 01:18:54,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:54,438 INFO L225 Difference]: With dead ends: 9245 [2022-01-11 01:18:54,438 INFO L226 Difference]: Without dead ends: 6827 [2022-01-11 01:18:54,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:54,446 INFO L933 BasicCegarLoop]: 4708 mSDtfsCounter, 4328 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4328 SdHoareTripleChecker+Valid, 5239 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 [2022-01-11 01:18:54,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4328 Valid, 5239 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:54,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6827 states. [2022-01-11 01:18:54,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6827 to 6823. [2022-01-11 01:18:54,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6823 states, 6820 states have (on average 1.4475073313782991) internal successors, (9872), 6822 states have internal predecessors, (9872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:54,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6823 states to 6823 states and 9872 transitions. [2022-01-11 01:18:54,869 INFO L78 Accepts]: Start accepts. Automaton has 6823 states and 9872 transitions. Word has length 124 [2022-01-11 01:18:54,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:54,869 INFO L470 AbstractCegarLoop]: Abstraction has 6823 states and 9872 transitions. [2022-01-11 01:18:54,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:54,869 INFO L276 IsEmpty]: Start isEmpty. Operand 6823 states and 9872 transitions. [2022-01-11 01:18:54,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 01:18:54,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:54,873 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:54,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 01:18:54,873 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:54,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:54,874 INFO L85 PathProgramCache]: Analyzing trace with hash -794644973, now seen corresponding path program 1 times [2022-01-11 01:18:54,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:54,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059481565] [2022-01-11 01:18:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:54,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:18:54,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:54,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059481565] [2022-01-11 01:18:54,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059481565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:54,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:54,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:54,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825602372] [2022-01-11 01:18:54,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:54,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:54,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:54,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:54,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:54,905 INFO L87 Difference]: Start difference. First operand 6823 states and 9872 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:55,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:55,246 INFO L93 Difference]: Finished difference Result 11401 states and 15642 transitions. [2022-01-11 01:18:55,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:55,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-11 01:18:55,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:55,260 INFO L225 Difference]: With dead ends: 11401 [2022-01-11 01:18:55,260 INFO L226 Difference]: Without dead ends: 6764 [2022-01-11 01:18:55,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:55,269 INFO L933 BasicCegarLoop]: 4507 mSDtfsCounter, 545 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 8465 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 [2022-01-11 01:18:55,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 8465 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:55,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6764 states. [2022-01-11 01:18:55,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6764 to 6764. [2022-01-11 01:18:55,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6764 states, 6761 states have (on average 1.4499334417985505) internal successors, (9803), 6763 states have internal predecessors, (9803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:55,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6764 states to 6764 states and 9803 transitions. [2022-01-11 01:18:55,568 INFO L78 Accepts]: Start accepts. Automaton has 6764 states and 9803 transitions. Word has length 124 [2022-01-11 01:18:55,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:55,569 INFO L470 AbstractCegarLoop]: Abstraction has 6764 states and 9803 transitions. [2022-01-11 01:18:55,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:55,569 INFO L276 IsEmpty]: Start isEmpty. Operand 6764 states and 9803 transitions. [2022-01-11 01:18:55,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 01:18:55,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:55,572 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:55,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 01:18:55,572 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:55,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:55,573 INFO L85 PathProgramCache]: Analyzing trace with hash -27406120, now seen corresponding path program 1 times [2022-01-11 01:18:55,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:55,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699971300] [2022-01-11 01:18:55,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:55,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:55,612 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:55,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:55,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699971300] [2022-01-11 01:18:55,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699971300] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:55,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:55,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:55,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540071004] [2022-01-11 01:18:55,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:55,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:55,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:55,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:55,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:55,614 INFO L87 Difference]: Start difference. First operand 6764 states and 9803 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:56,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:56,094 INFO L93 Difference]: Finished difference Result 15546 states and 20817 transitions. [2022-01-11 01:18:56,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:56,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-11 01:18:56,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:56,116 INFO L225 Difference]: With dead ends: 15546 [2022-01-11 01:18:56,117 INFO L226 Difference]: Without dead ends: 10968 [2022-01-11 01:18:56,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:56,128 INFO L933 BasicCegarLoop]: 4659 mSDtfsCounter, 4431 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4431 SdHoareTripleChecker+Valid, 5181 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:56,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4431 Valid, 5181 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:56,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10968 states. [2022-01-11 01:18:56,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10968 to 10676. [2022-01-11 01:18:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10676 states, 10673 states have (on average 1.3729035884943315) internal successors, (14653), 10675 states have internal predecessors, (14653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:56,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10676 states to 10676 states and 14653 transitions. [2022-01-11 01:18:56,679 INFO L78 Accepts]: Start accepts. Automaton has 10676 states and 14653 transitions. Word has length 125 [2022-01-11 01:18:56,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:56,680 INFO L470 AbstractCegarLoop]: Abstraction has 10676 states and 14653 transitions. [2022-01-11 01:18:56,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:56,680 INFO L276 IsEmpty]: Start isEmpty. Operand 10676 states and 14653 transitions. [2022-01-11 01:18:56,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 01:18:56,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:56,685 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:56,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 01:18:56,685 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:56,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:56,686 INFO L85 PathProgramCache]: Analyzing trace with hash 869508281, now seen corresponding path program 1 times [2022-01-11 01:18:56,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:56,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851161918] [2022-01-11 01:18:56,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:56,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:18:56,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:56,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851161918] [2022-01-11 01:18:56,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851161918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:56,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:56,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:56,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809715417] [2022-01-11 01:18:56,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:56,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:56,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:56,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:56,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:56,713 INFO L87 Difference]: Start difference. First operand 10676 states and 14653 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:57,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:57,148 INFO L93 Difference]: Finished difference Result 19134 states and 25236 transitions. [2022-01-11 01:18:57,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:57,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-11 01:18:57,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:57,171 INFO L225 Difference]: With dead ends: 19134 [2022-01-11 01:18:57,171 INFO L226 Difference]: Without dead ends: 10618 [2022-01-11 01:18:57,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:57,185 INFO L933 BasicCegarLoop]: 4506 mSDtfsCounter, 543 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 8464 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 [2022-01-11 01:18:57,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 8464 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:57,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10618 states. [2022-01-11 01:18:57,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10618 to 10618. [2022-01-11 01:18:57,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10618 states, 10615 states have (on average 1.3740932642487047) internal successors, (14586), 10617 states have internal predecessors, (14586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10618 states to 10618 states and 14586 transitions. [2022-01-11 01:18:57,749 INFO L78 Accepts]: Start accepts. Automaton has 10618 states and 14586 transitions. Word has length 125 [2022-01-11 01:18:57,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:57,750 INFO L470 AbstractCegarLoop]: Abstraction has 10618 states and 14586 transitions. [2022-01-11 01:18:57,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:57,750 INFO L276 IsEmpty]: Start isEmpty. Operand 10618 states and 14586 transitions. [2022-01-11 01:18:57,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-11 01:18:57,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:57,757 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:57,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 01:18:57,757 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:57,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:57,758 INFO L85 PathProgramCache]: Analyzing trace with hash 607188257, now seen corresponding path program 1 times [2022-01-11 01:18:57,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:57,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255110592] [2022-01-11 01:18:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:57,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:18:57,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:57,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255110592] [2022-01-11 01:18:57,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255110592] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:57,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:57,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:57,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935530663] [2022-01-11 01:18:57,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:57,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:57,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:57,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:57,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:57,800 INFO L87 Difference]: Start difference. First operand 10618 states and 14586 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:58,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:18:58,611 INFO L93 Difference]: Finished difference Result 26523 states and 34430 transitions. [2022-01-11 01:18:58,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:18:58,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-11 01:18:58,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:18:58,647 INFO L225 Difference]: With dead ends: 26523 [2022-01-11 01:18:58,647 INFO L226 Difference]: Without dead ends: 18091 [2022-01-11 01:18:58,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:58,663 INFO L933 BasicCegarLoop]: 4622 mSDtfsCounter, 4377 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4377 SdHoareTripleChecker+Valid, 5142 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:18:58,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4377 Valid, 5142 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:18:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18091 states. [2022-01-11 01:18:59,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18091 to 17639. [2022-01-11 01:18:59,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17639 states, 17636 states have (on average 1.3196870038557496) internal successors, (23274), 17638 states have internal predecessors, (23274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:59,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17639 states to 17639 states and 23274 transitions. [2022-01-11 01:18:59,584 INFO L78 Accepts]: Start accepts. Automaton has 17639 states and 23274 transitions. Word has length 126 [2022-01-11 01:18:59,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:18:59,584 INFO L470 AbstractCegarLoop]: Abstraction has 17639 states and 23274 transitions. [2022-01-11 01:18:59,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:18:59,584 INFO L276 IsEmpty]: Start isEmpty. Operand 17639 states and 23274 transitions. [2022-01-11 01:18:59,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-11 01:18:59,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:18:59,593 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:18:59,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 01:18:59,593 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:18:59,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:18:59,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1678154273, now seen corresponding path program 1 times [2022-01-11 01:18:59,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:18:59,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118784367] [2022-01-11 01:18:59,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:18:59,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:18:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:18:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:18:59,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:18:59,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118784367] [2022-01-11 01:18:59,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118784367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:18:59,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:18:59,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:18:59,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864092020] [2022-01-11 01:18:59,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:18:59,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:18:59,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:18:59,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:18:59,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:18:59,624 INFO L87 Difference]: Start difference. First operand 17639 states and 23274 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:19:00,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:19:00,370 INFO L93 Difference]: Finished difference Result 33054 states and 42472 transitions. [2022-01-11 01:19:00,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:19:00,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-11 01:19:00,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:19:00,401 INFO L225 Difference]: With dead ends: 33054 [2022-01-11 01:19:00,402 INFO L226 Difference]: Without dead ends: 17582 [2022-01-11 01:19:00,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:19:00,420 INFO L933 BasicCegarLoop]: 4505 mSDtfsCounter, 541 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 8463 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 [2022-01-11 01:19:00,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 8463 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:19:00,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17582 states. [2022-01-11 01:19:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17582 to 17582. [2022-01-11 01:19:01,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17582 states, 17579 states have (on average 1.3202685021901133) internal successors, (23209), 17581 states have internal predecessors, (23209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:19:01,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17582 states to 17582 states and 23209 transitions. [2022-01-11 01:19:01,240 INFO L78 Accepts]: Start accepts. Automaton has 17582 states and 23209 transitions. Word has length 126 [2022-01-11 01:19:01,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:19:01,240 INFO L470 AbstractCegarLoop]: Abstraction has 17582 states and 23209 transitions. [2022-01-11 01:19:01,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:19:01,240 INFO L276 IsEmpty]: Start isEmpty. Operand 17582 states and 23209 transitions. [2022-01-11 01:19:01,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 01:19:01,248 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:19:01,248 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:19:01,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 01:19:01,248 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:19:01,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:19:01,249 INFO L85 PathProgramCache]: Analyzing trace with hash -202766937, now seen corresponding path program 1 times [2022-01-11 01:19:01,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:19:01,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432624756] [2022-01-11 01:19:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:19:01,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:19:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:19:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:19:01,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:19:01,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432624756] [2022-01-11 01:19:01,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432624756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:19:01,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:19:01,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:19:01,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011176896] [2022-01-11 01:19:01,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:19:01,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:19:01,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:19:01,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:19:01,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:19:01,298 INFO L87 Difference]: Start difference. First operand 17582 states and 23209 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:19:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:19:02,610 INFO L93 Difference]: Finished difference Result 45742 states and 58267 transitions. [2022-01-11 01:19:02,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:19:02,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-11 01:19:02,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:19:02,663 INFO L225 Difference]: With dead ends: 45742 [2022-01-11 01:19:02,663 INFO L226 Difference]: Without dead ends: 30346 [2022-01-11 01:19:02,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:19:02,685 INFO L933 BasicCegarLoop]: 4601 mSDtfsCounter, 4337 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4337 SdHoareTripleChecker+Valid, 5126 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:19:02,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4337 Valid, 5126 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:19:02,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30346 states. [2022-01-11 01:19:04,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30346 to 30342. [2022-01-11 01:19:04,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30342 states, 30339 states have (on average 1.2854411813177757) internal successors, (38999), 30341 states have internal predecessors, (38999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:19:04,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30342 states to 30342 states and 38999 transitions. [2022-01-11 01:19:04,225 INFO L78 Accepts]: Start accepts. Automaton has 30342 states and 38999 transitions. Word has length 127 [2022-01-11 01:19:04,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:19:04,226 INFO L470 AbstractCegarLoop]: Abstraction has 30342 states and 38999 transitions. [2022-01-11 01:19:04,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:19:04,226 INFO L276 IsEmpty]: Start isEmpty. Operand 30342 states and 38999 transitions. [2022-01-11 01:19:04,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 01:19:04,237 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:19:04,237 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:19:04,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 01:19:04,237 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:19:04,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:19:04,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1023478854, now seen corresponding path program 1 times [2022-01-11 01:19:04,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:19:04,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128485112] [2022-01-11 01:19:04,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:19:04,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:19:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:19:04,264 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:19:04,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:19:04,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128485112] [2022-01-11 01:19:04,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128485112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:19:04,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:19:04,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:19:04,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858549234] [2022-01-11 01:19:04,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:19:04,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:19:04,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:19:04,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:19:04,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:19:04,265 INFO L87 Difference]: Start difference. First operand 30342 states and 38999 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:19:05,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:19:05,788 INFO L93 Difference]: Finished difference Result 58442 states and 73905 transitions. [2022-01-11 01:19:05,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:19:05,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-11 01:19:05,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:19:05,835 INFO L225 Difference]: With dead ends: 58442 [2022-01-11 01:19:05,835 INFO L226 Difference]: Without dead ends: 30286 [2022-01-11 01:19:05,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:19:05,861 INFO L933 BasicCegarLoop]: 4504 mSDtfsCounter, 539 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 8462 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 [2022-01-11 01:19:05,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 8462 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:19:05,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30286 states. [2022-01-11 01:19:07,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30286 to 30286. [2022-01-11 01:19:07,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30286 states, 30283 states have (on average 1.285737872733877) internal successors, (38936), 30285 states have internal predecessors, (38936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:19:07,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30286 states to 30286 states and 38936 transitions. [2022-01-11 01:19:07,500 INFO L78 Accepts]: Start accepts. Automaton has 30286 states and 38936 transitions. Word has length 127 [2022-01-11 01:19:07,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:19:07,500 INFO L470 AbstractCegarLoop]: Abstraction has 30286 states and 38936 transitions. [2022-01-11 01:19:07,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:19:07,500 INFO L276 IsEmpty]: Start isEmpty. Operand 30286 states and 38936 transitions. [2022-01-11 01:19:07,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-11 01:19:07,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:19:07,509 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:19:07,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 01:19:07,509 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:19:07,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:19:07,510 INFO L85 PathProgramCache]: Analyzing trace with hash -699479849, now seen corresponding path program 1 times [2022-01-11 01:19:07,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:19:07,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038508754] [2022-01-11 01:19:07,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:19:07,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:19:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:19:07,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:19:07,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:19:07,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038508754] [2022-01-11 01:19:07,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038508754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:19:07,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:19:07,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:19:07,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081683949] [2022-01-11 01:19:07,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:19:07,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:19:07,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:19:07,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:19:07,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:19:07,556 INFO L87 Difference]: Start difference. First operand 30286 states and 38936 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:19:10,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:19:10,179 INFO L93 Difference]: Finished difference Result 83086 states and 104172 transitions. [2022-01-11 01:19:10,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:19:10,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-01-11 01:19:10,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:19:10,276 INFO L225 Difference]: With dead ends: 83086 [2022-01-11 01:19:10,276 INFO L226 Difference]: Without dead ends: 54986 [2022-01-11 01:19:10,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:19:10,311 INFO L933 BasicCegarLoop]: 4958 mSDtfsCounter, 451 mSDsluCounter, 4483 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 9441 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:19:10,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 9441 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:19:10,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54986 states. [2022-01-11 01:19:13,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54986 to 54986. [2022-01-11 01:19:13,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54986 states, 54983 states have (on average 1.2504592328537911) internal successors, (68754), 54985 states have internal predecessors, (68754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:19:13,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54986 states to 54986 states and 68754 transitions. [2022-01-11 01:19:13,260 INFO L78 Accepts]: Start accepts. Automaton has 54986 states and 68754 transitions. Word has length 128 [2022-01-11 01:19:13,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:19:13,260 INFO L470 AbstractCegarLoop]: Abstraction has 54986 states and 68754 transitions. [2022-01-11 01:19:13,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:19:13,260 INFO L276 IsEmpty]: Start isEmpty. Operand 54986 states and 68754 transitions. [2022-01-11 01:19:13,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:19:13,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:19:13,290 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:19:13,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 01:19:13,290 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:19:13,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:19:13,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1736521428, now seen corresponding path program 1 times [2022-01-11 01:19:13,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:19:13,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041423751] [2022-01-11 01:19:13,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:19:13,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:19:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:19:13,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:19:13,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:19:13,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041423751] [2022-01-11 01:19:13,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041423751] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:19:13,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:19:13,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:19:13,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241833602] [2022-01-11 01:19:13,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:19:13,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:19:13,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:19:13,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:19:13,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:19:13,344 INFO L87 Difference]: Start difference. First operand 54986 states and 68754 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:19:17,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:19:17,478 INFO L93 Difference]: Finished difference Result 131344 states and 162280 transitions. [2022-01-11 01:19:17,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:19:17,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2022-01-11 01:19:17,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:19:17,624 INFO L225 Difference]: With dead ends: 131344 [2022-01-11 01:19:17,624 INFO L226 Difference]: Without dead ends: 78556 [2022-01-11 01:19:17,667 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 [2022-01-11 01:19:17,668 INFO L933 BasicCegarLoop]: 4495 mSDtfsCounter, 4314 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4314 SdHoareTripleChecker+Valid, 4951 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:19:17,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4314 Valid, 4951 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:19:17,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78556 states. [2022-01-11 01:19:21,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78556 to 78296. [2022-01-11 01:19:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78296 states, 78293 states have (on average 1.2363557406153807) internal successors, (96798), 78295 states have internal predecessors, (96798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:19:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78296 states to 78296 states and 96798 transitions. [2022-01-11 01:19:22,066 INFO L78 Accepts]: Start accepts. Automaton has 78296 states and 96798 transitions. Word has length 165 [2022-01-11 01:19:22,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:19:22,067 INFO L470 AbstractCegarLoop]: Abstraction has 78296 states and 96798 transitions. [2022-01-11 01:19:22,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:19:22,067 INFO L276 IsEmpty]: Start isEmpty. Operand 78296 states and 96798 transitions. [2022-01-11 01:19:22,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:19:22,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:19:22,110 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:19:22,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 01:19:22,110 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:19:22,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:19:22,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1353634147, now seen corresponding path program 1 times [2022-01-11 01:19:22,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:19:22,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901429433] [2022-01-11 01:19:22,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:19:22,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:19:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:19:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:19:22,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:19:22,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901429433] [2022-01-11 01:19:22,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901429433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:19:22,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:19:22,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:19:22,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68563587] [2022-01-11 01:19:22,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:19:22,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:19:22,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:19:22,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:19:22,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:19:22,162 INFO L87 Difference]: Start difference. First operand 78296 states and 96798 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:19:27,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:19:27,831 INFO L93 Difference]: Finished difference Result 188440 states and 231082 transitions. [2022-01-11 01:19:27,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:19:27,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2022-01-11 01:19:27,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:19:28,042 INFO L225 Difference]: With dead ends: 188440 [2022-01-11 01:19:28,042 INFO L226 Difference]: Without dead ends: 112354 [2022-01-11 01:19:28,102 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 [2022-01-11 01:19:28,103 INFO L933 BasicCegarLoop]: 4493 mSDtfsCounter, 4316 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 4949 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:19:28,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4316 Valid, 4949 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:19:28,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112354 states.