/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:00:17,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:00:17,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:00:17,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 20:00:17,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 20:00:17,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 20:00:17,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 20:00:17,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 20:00:17,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 20:00:17,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 20:00:17,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 20:00:17,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 20:00:17,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:00:17,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:00:17,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:00:17,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:00:17,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:00:17,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:00:17,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:00:17,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:00:17,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:00:17,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:00:17,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:00:17,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:00:17,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 20:00:17,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:00:17,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:00:17,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:00:17,958 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 20:00:17,981 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:00:17,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:00:17,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:00:17,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:00:17,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:00:17,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:00:17,984 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:00:17,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:00:17,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:00:17,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:00:17,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:00:17,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:00:17,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:00:17,985 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:00:17,985 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:00:17,985 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:00:17,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:00:17,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:00:17,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:00:17,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:00:17,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:00:17,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:00:17,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:00:17,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:00:17,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:00:17,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:00:17,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:00:17,987 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:00:17,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:00:17,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:00:17,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:00:17,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:00:17,988 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:00:17,988 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:00:18,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:00:18,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:00:18,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:00:18,187 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:00:18,187 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:00:18,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2022-01-10 20:00:18,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/450dd32b4/21747619642c40fb8dee3900ae049151/FLAG0c7ebf6ec [2022-01-10 20:00:18,668 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:00:18,668 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2022-01-10 20:00:18,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/450dd32b4/21747619642c40fb8dee3900ae049151/FLAG0c7ebf6ec [2022-01-10 20:00:18,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/450dd32b4/21747619642c40fb8dee3900ae049151 [2022-01-10 20:00:18,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:00:18,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:00:18,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:00:18,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:00:18,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:00:18,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:00:18" (1/1) ... [2022-01-10 20:00:18,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36bbad2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:18, skipping insertion in model container [2022-01-10 20:00:18,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:00:18" (1/1) ... [2022-01-10 20:00:18,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:00:18,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:00:18,845 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/pc_sfifo_1.cil-2+token_ring.04.cil-1.c[913,926] [2022-01-10 20:00:18,868 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/pc_sfifo_1.cil-2+token_ring.04.cil-1.c[5977,5990] [2022-01-10 20:00:18,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:00:18,927 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:00:18,943 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/pc_sfifo_1.cil-2+token_ring.04.cil-1.c[913,926] [2022-01-10 20:00:18,961 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/pc_sfifo_1.cil-2+token_ring.04.cil-1.c[5977,5990] [2022-01-10 20:00:18,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:00:19,013 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:00:19,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:19 WrapperNode [2022-01-10 20:00:19,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:00:19,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:00:19,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:00:19,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:00:19,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:19" (1/1) ... [2022-01-10 20:00:19,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:19" (1/1) ... [2022-01-10 20:00:19,079 INFO L137 Inliner]: procedures = 57, calls = 60, calls flagged for inlining = 55, calls inlined = 96, statements flattened = 1315 [2022-01-10 20:00:19,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:00:19,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:00:19,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:00:19,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:00:19,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:19" (1/1) ... [2022-01-10 20:00:19,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:19" (1/1) ... [2022-01-10 20:00:19,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:19" (1/1) ... [2022-01-10 20:00:19,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:19" (1/1) ... [2022-01-10 20:00:19,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:19" (1/1) ... [2022-01-10 20:00:19,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:19" (1/1) ... [2022-01-10 20:00:19,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:19" (1/1) ... [2022-01-10 20:00:19,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:00:19,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:00:19,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:00:19,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:00:19,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:19" (1/1) ... [2022-01-10 20:00:19,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:00:19,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:00:19,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 20:00:19,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 20:00:19,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:00:19,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:00:19,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:00:19,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:00:19,343 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:00:19,344 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:00:20,050 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:00:20,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:00:20,064 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-10 20:00:20,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:00:20 BoogieIcfgContainer [2022-01-10 20:00:20,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:00:20,067 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:00:20,067 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:00:20,068 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:00:20,070 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:00:20" (1/1) ... [2022-01-10 20:00:20,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:00:20 BasicIcfg [2022-01-10 20:00:20,284 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:00:20,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:00:20,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:00:20,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:00:20,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:00:18" (1/4) ... [2022-01-10 20:00:20,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d40e46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:00:20, skipping insertion in model container [2022-01-10 20:00:20,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:00:19" (2/4) ... [2022-01-10 20:00:20,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d40e46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:00:20, skipping insertion in model container [2022-01-10 20:00:20,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:00:20" (3/4) ... [2022-01-10 20:00:20,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d40e46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:00:20, skipping insertion in model container [2022-01-10 20:00:20,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:00:20" (4/4) ... [2022-01-10 20:00:20,290 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.04.cil-1.cTransformedIcfg [2022-01-10 20:00:20,293 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:00:20,294 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 20:00:20,338 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:00:20,344 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 20:00:20,344 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 20:00:20,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 511 states, 507 states have (on average 1.5404339250493098) internal successors, (781), 510 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:20,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-10 20:00:20,373 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:20,373 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] [2022-01-10 20:00:20,374 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:20,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:20,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1086388923, now seen corresponding path program 1 times [2022-01-10 20:00:20,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:20,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642159529] [2022-01-10 20:00:20,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:20,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:20,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:20,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642159529] [2022-01-10 20:00:20,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642159529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:20,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:20,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:20,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549857305] [2022-01-10 20:00:20,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:20,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:20,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:20,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:20,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:20,657 INFO L87 Difference]: Start difference. First operand has 511 states, 507 states have (on average 1.5404339250493098) internal successors, (781), 510 states have internal predecessors, (781), 0 states have call successors, (0), 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 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:20,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:20,764 INFO L93 Difference]: Finished difference Result 1017 states and 1548 transitions. [2022-01-10 20:00:20,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:20,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-01-10 20:00:20,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:20,783 INFO L225 Difference]: With dead ends: 1017 [2022-01-10 20:00:20,784 INFO L226 Difference]: Without dead ends: 566 [2022-01-10 20:00:20,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:20,794 INFO L933 BasicCegarLoop]: 763 mSDtfsCounter, 724 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:20,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 857 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:20,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-01-10 20:00:20,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 545. [2022-01-10 20:00:20,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 542 states have (on average 1.485239852398524) internal successors, (805), 544 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:20,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 805 transitions. [2022-01-10 20:00:20,881 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 805 transitions. Word has length 36 [2022-01-10 20:00:20,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:20,882 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 805 transitions. [2022-01-10 20:00:20,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:20,882 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 805 transitions. [2022-01-10 20:00:20,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 20:00:20,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:20,886 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] [2022-01-10 20:00:20,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:00:20,887 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:20,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:20,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1121483165, now seen corresponding path program 1 times [2022-01-10 20:00:20,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:20,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685725120] [2022-01-10 20:00:20,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:20,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:20,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:20,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:20,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685725120] [2022-01-10 20:00:20,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685725120] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:20,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:20,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:20,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378240021] [2022-01-10 20:00:20,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:20,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:20,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:20,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:21,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:21,000 INFO L87 Difference]: Start difference. First operand 545 states and 805 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:21,034 INFO L93 Difference]: Finished difference Result 758 states and 1099 transitions. [2022-01-10 20:00:21,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:21,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-10 20:00:21,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:21,039 INFO L225 Difference]: With dead ends: 758 [2022-01-10 20:00:21,039 INFO L226 Difference]: Without dead ends: 647 [2022-01-10 20:00:21,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:21,040 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 715 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:21,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [715 Valid, 830 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:21,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-01-10 20:00:21,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 643. [2022-01-10 20:00:21,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 640 states have (on average 1.465625) internal successors, (938), 642 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 938 transitions. [2022-01-10 20:00:21,057 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 938 transitions. Word has length 37 [2022-01-10 20:00:21,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:21,058 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 938 transitions. [2022-01-10 20:00:21,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,058 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 938 transitions. [2022-01-10 20:00:21,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 20:00:21,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:21,064 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] [2022-01-10 20:00:21,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 20:00:21,069 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:21,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:21,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1744335931, now seen corresponding path program 1 times [2022-01-10 20:00:21,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:21,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252375806] [2022-01-10 20:00:21,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:21,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:21,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:21,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252375806] [2022-01-10 20:00:21,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252375806] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:21,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:21,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:21,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108148859] [2022-01-10 20:00:21,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:21,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:21,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:21,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:21,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:21,161 INFO L87 Difference]: Start difference. First operand 643 states and 938 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:21,201 INFO L93 Difference]: Finished difference Result 962 states and 1377 transitions. [2022-01-10 20:00:21,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:21,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-10 20:00:21,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:21,204 INFO L225 Difference]: With dead ends: 962 [2022-01-10 20:00:21,204 INFO L226 Difference]: Without dead ends: 753 [2022-01-10 20:00:21,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:21,211 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 60 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:21,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1447 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:21,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-01-10 20:00:21,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 729. [2022-01-10 20:00:21,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 726 states have (on average 1.4517906336088153) internal successors, (1054), 728 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1054 transitions. [2022-01-10 20:00:21,237 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1054 transitions. Word has length 37 [2022-01-10 20:00:21,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:21,237 INFO L470 AbstractCegarLoop]: Abstraction has 729 states and 1054 transitions. [2022-01-10 20:00:21,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1054 transitions. [2022-01-10 20:00:21,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 20:00:21,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:21,239 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:21,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 20:00:21,240 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:21,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:21,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1869724085, now seen corresponding path program 1 times [2022-01-10 20:00:21,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:21,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015533343] [2022-01-10 20:00:21,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:21,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:21,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:21,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015533343] [2022-01-10 20:00:21,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015533343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:21,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:21,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:21,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058575116] [2022-01-10 20:00:21,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:21,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:21,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:21,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:21,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:21,304 INFO L87 Difference]: Start difference. First operand 729 states and 1054 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:21,335 INFO L93 Difference]: Finished difference Result 1180 states and 1661 transitions. [2022-01-10 20:00:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:21,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-10 20:00:21,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:21,338 INFO L225 Difference]: With dead ends: 1180 [2022-01-10 20:00:21,338 INFO L226 Difference]: Without dead ends: 885 [2022-01-10 20:00:21,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:21,343 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 48 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:21,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 1527 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:21,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-01-10 20:00:21,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2022-01-10 20:00:21,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 882 states have (on average 1.4081632653061225) internal successors, (1242), 884 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1242 transitions. [2022-01-10 20:00:21,360 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1242 transitions. Word has length 51 [2022-01-10 20:00:21,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:21,361 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1242 transitions. [2022-01-10 20:00:21,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,361 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1242 transitions. [2022-01-10 20:00:21,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 20:00:21,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:21,362 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] [2022-01-10 20:00:21,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 20:00:21,362 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:21,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:21,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1003008896, now seen corresponding path program 1 times [2022-01-10 20:00:21,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:21,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490035422] [2022-01-10 20:00:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:21,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:21,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:21,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490035422] [2022-01-10 20:00:21,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490035422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:21,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:21,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:21,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669473694] [2022-01-10 20:00:21,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:21,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:21,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:21,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:21,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:21,402 INFO L87 Difference]: Start difference. First operand 885 states and 1242 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:21,434 INFO L93 Difference]: Finished difference Result 1358 states and 1858 transitions. [2022-01-10 20:00:21,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:21,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 20:00:21,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:21,438 INFO L225 Difference]: With dead ends: 1358 [2022-01-10 20:00:21,438 INFO L226 Difference]: Without dead ends: 993 [2022-01-10 20:00:21,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:21,439 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 689 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:21,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 831 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:21,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-01-10 20:00:21,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 993. [2022-01-10 20:00:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 990 states have (on average 1.3838383838383839) internal successors, (1370), 992 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1370 transitions. [2022-01-10 20:00:21,458 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1370 transitions. Word has length 55 [2022-01-10 20:00:21,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:21,460 INFO L470 AbstractCegarLoop]: Abstraction has 993 states and 1370 transitions. [2022-01-10 20:00:21,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,462 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1370 transitions. [2022-01-10 20:00:21,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 20:00:21,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:21,463 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 20:00:21,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 20:00:21,464 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:21,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:21,464 INFO L85 PathProgramCache]: Analyzing trace with hash -2092140992, now seen corresponding path program 1 times [2022-01-10 20:00:21,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:21,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369343235] [2022-01-10 20:00:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:21,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:21,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:21,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:21,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369343235] [2022-01-10 20:00:21,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369343235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:21,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:21,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:00:21,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522713582] [2022-01-10 20:00:21,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:21,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:00:21,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:21,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:00:21,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:00:21,562 INFO L87 Difference]: Start difference. First operand 993 states and 1370 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:21,650 INFO L93 Difference]: Finished difference Result 2076 states and 2774 transitions. [2022-01-10 20:00:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:00:21,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-10 20:00:21,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:21,655 INFO L225 Difference]: With dead ends: 2076 [2022-01-10 20:00:21,655 INFO L226 Difference]: Without dead ends: 1653 [2022-01-10 20:00:21,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:00:21,657 INFO L933 BasicCegarLoop]: 816 mSDtfsCounter, 302 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:21,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 3182 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:21,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2022-01-10 20:00:21,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1017. [2022-01-10 20:00:21,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1014 states have (on average 1.370808678500986) internal successors, (1390), 1016 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1390 transitions. [2022-01-10 20:00:21,696 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1390 transitions. Word has length 56 [2022-01-10 20:00:21,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:21,696 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 1390 transitions. [2022-01-10 20:00:21,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1390 transitions. [2022-01-10 20:00:21,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 20:00:21,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:21,698 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 20:00:21,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 20:00:21,698 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:21,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:21,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1741341055, now seen corresponding path program 1 times [2022-01-10 20:00:21,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:21,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273942878] [2022-01-10 20:00:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:21,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:21,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:21,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:21,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273942878] [2022-01-10 20:00:21,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273942878] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:21,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:21,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:00:21,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985269269] [2022-01-10 20:00:21,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:21,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:00:21,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:21,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:00:21,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:00:21,764 INFO L87 Difference]: Start difference. First operand 1017 states and 1390 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:21,856 INFO L93 Difference]: Finished difference Result 1806 states and 2400 transitions. [2022-01-10 20:00:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:00:21,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-10 20:00:21,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:21,860 INFO L225 Difference]: With dead ends: 1806 [2022-01-10 20:00:21,860 INFO L226 Difference]: Without dead ends: 1308 [2022-01-10 20:00:21,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:00:21,862 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 276 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:21,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 3128 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:21,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2022-01-10 20:00:21,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 915. [2022-01-10 20:00:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 912 states have (on average 1.3804824561403508) internal successors, (1259), 914 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1259 transitions. [2022-01-10 20:00:21,897 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1259 transitions. Word has length 56 [2022-01-10 20:00:21,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:21,898 INFO L470 AbstractCegarLoop]: Abstraction has 915 states and 1259 transitions. [2022-01-10 20:00:21,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:21,898 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1259 transitions. [2022-01-10 20:00:21,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 20:00:21,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:21,899 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 20:00:21,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 20:00:21,900 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:21,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:21,900 INFO L85 PathProgramCache]: Analyzing trace with hash 476446689, now seen corresponding path program 1 times [2022-01-10 20:00:21,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:21,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405603462] [2022-01-10 20:00:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:21,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:21,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:21,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405603462] [2022-01-10 20:00:21,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405603462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:21,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:21,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:00:21,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108891797] [2022-01-10 20:00:21,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:21,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:00:21,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:21,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:00:21,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:00:21,994 INFO L87 Difference]: Start difference. First operand 915 states and 1259 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:22,073 INFO L93 Difference]: Finished difference Result 965 states and 1319 transitions. [2022-01-10 20:00:22,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 20:00:22,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-10 20:00:22,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:22,077 INFO L225 Difference]: With dead ends: 965 [2022-01-10 20:00:22,077 INFO L226 Difference]: Without dead ends: 963 [2022-01-10 20:00:22,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:00:22,077 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 1454 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:22,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 812 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:22,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-01-10 20:00:22,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 913. [2022-01-10 20:00:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 911 states have (on average 1.3787047200878155) internal successors, (1256), 912 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1256 transitions. [2022-01-10 20:00:22,121 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1256 transitions. Word has length 56 [2022-01-10 20:00:22,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:22,122 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1256 transitions. [2022-01-10 20:00:22,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:22,122 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1256 transitions. [2022-01-10 20:00:22,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 20:00:22,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:22,123 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 20:00:22,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 20:00:22,123 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:22,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:22,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1884946620, now seen corresponding path program 1 times [2022-01-10 20:00:22,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:22,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758722354] [2022-01-10 20:00:22,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:22,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:22,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:22,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758722354] [2022-01-10 20:00:22,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758722354] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:00:22,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504243399] [2022-01-10 20:00:22,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:22,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:00:22,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:00:22,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:00:22,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 20:00:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:22,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 20:00:22,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:00:22,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:22,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:00:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:22,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504243399] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:00:22,976 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:00:22,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-10 20:00:22,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499130762] [2022-01-10 20:00:22,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:00:22,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 20:00:22,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:22,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 20:00:22,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 20:00:22,977 INFO L87 Difference]: Start difference. First operand 913 states and 1256 transitions. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:23,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:23,177 INFO L93 Difference]: Finished difference Result 1799 states and 2384 transitions. [2022-01-10 20:00:23,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 20:00:23,178 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-10 20:00:23,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:23,183 INFO L225 Difference]: With dead ends: 1799 [2022-01-10 20:00:23,183 INFO L226 Difference]: Without dead ends: 1797 [2022-01-10 20:00:23,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 20:00:23,185 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 1672 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 4260 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:23,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1672 Valid, 4260 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:23,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2022-01-10 20:00:23,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1185. [2022-01-10 20:00:23,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 1183 states have (on average 1.360101437024514) internal successors, (1609), 1184 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:23,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1609 transitions. [2022-01-10 20:00:23,277 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1609 transitions. Word has length 57 [2022-01-10 20:00:23,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:23,278 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1609 transitions. [2022-01-10 20:00:23,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:23,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1609 transitions. [2022-01-10 20:00:23,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 20:00:23,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:23,280 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:23,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 20:00:23,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:00:23,485 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:23,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:23,486 INFO L85 PathProgramCache]: Analyzing trace with hash 417954163, now seen corresponding path program 2 times [2022-01-10 20:00:23,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:23,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296196349] [2022-01-10 20:00:23,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:23,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:23,510 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:23,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:23,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296196349] [2022-01-10 20:00:23,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296196349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:23,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:23,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:23,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030993829] [2022-01-10 20:00:23,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:23,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:23,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:23,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:23,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:23,511 INFO L87 Difference]: Start difference. First operand 1185 states and 1609 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:23,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:23,575 INFO L93 Difference]: Finished difference Result 1692 states and 2269 transitions. [2022-01-10 20:00:23,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:23,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 20:00:23,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:23,579 INFO L225 Difference]: With dead ends: 1692 [2022-01-10 20:00:23,579 INFO L226 Difference]: Without dead ends: 1096 [2022-01-10 20:00:23,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:23,580 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 693 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:23,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 846 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:23,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-01-10 20:00:23,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1070. [2022-01-10 20:00:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1068 states have (on average 1.3642322097378277) internal successors, (1457), 1069 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:23,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1457 transitions. [2022-01-10 20:00:23,636 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1457 transitions. Word has length 72 [2022-01-10 20:00:23,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:23,637 INFO L470 AbstractCegarLoop]: Abstraction has 1070 states and 1457 transitions. [2022-01-10 20:00:23,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:23,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1457 transitions. [2022-01-10 20:00:23,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:00:23,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:23,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:23,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 20:00:23,638 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:23,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:23,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1989801897, now seen corresponding path program 1 times [2022-01-10 20:00:23,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:23,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684654815] [2022-01-10 20:00:23,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:23,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:23,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:23,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684654815] [2022-01-10 20:00:23,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684654815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:23,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:23,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:23,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304947900] [2022-01-10 20:00:23,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:23,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:23,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:23,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:23,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:23,664 INFO L87 Difference]: Start difference. First operand 1070 states and 1457 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:23,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:23,767 INFO L93 Difference]: Finished difference Result 1809 states and 2560 transitions. [2022-01-10 20:00:23,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:23,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:00:23,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:23,771 INFO L225 Difference]: With dead ends: 1809 [2022-01-10 20:00:23,771 INFO L226 Difference]: Without dead ends: 1393 [2022-01-10 20:00:23,772 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 [2022-01-10 20:00:23,773 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 673 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:23,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 1262 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:23,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2022-01-10 20:00:23,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1391. [2022-01-10 20:00:23,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.3909287257019438) internal successors, (1932), 1390 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:23,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1932 transitions. [2022-01-10 20:00:23,854 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1932 transitions. Word has length 77 [2022-01-10 20:00:23,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:23,854 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1932 transitions. [2022-01-10 20:00:23,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:23,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1932 transitions. [2022-01-10 20:00:23,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:00:23,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:23,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:23,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 20:00:23,855 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:23,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:23,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1694092489, now seen corresponding path program 1 times [2022-01-10 20:00:23,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:23,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547174366] [2022-01-10 20:00:23,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:23,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:23,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:23,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:23,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547174366] [2022-01-10 20:00:23,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547174366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:23,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:23,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:23,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061680071] [2022-01-10 20:00:23,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:23,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:23,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:23,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:23,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:23,882 INFO L87 Difference]: Start difference. First operand 1391 states and 1932 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:23,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:23,953 INFO L93 Difference]: Finished difference Result 2127 states and 3029 transitions. [2022-01-10 20:00:23,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:23,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:00:23,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:23,957 INFO L225 Difference]: With dead ends: 2127 [2022-01-10 20:00:23,957 INFO L226 Difference]: Without dead ends: 1391 [2022-01-10 20:00:23,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:23,958 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 723 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:23,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 730 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:23,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-10 20:00:24,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-10 20:00:24,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.3851691864650828) internal successors, (1924), 1390 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:24,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1924 transitions. [2022-01-10 20:00:24,034 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1924 transitions. Word has length 77 [2022-01-10 20:00:24,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:24,034 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1924 transitions. [2022-01-10 20:00:24,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:24,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1924 transitions. [2022-01-10 20:00:24,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:00:24,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:24,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:24,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 20:00:24,035 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:24,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:24,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1363487831, now seen corresponding path program 1 times [2022-01-10 20:00:24,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:24,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387179295] [2022-01-10 20:00:24,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:24,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:24,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:24,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387179295] [2022-01-10 20:00:24,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387179295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:24,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:24,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:24,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11891537] [2022-01-10 20:00:24,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:24,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:24,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:24,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:24,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:24,061 INFO L87 Difference]: Start difference. First operand 1391 states and 1924 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:24,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:24,131 INFO L93 Difference]: Finished difference Result 2126 states and 3012 transitions. [2022-01-10 20:00:24,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:24,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:00:24,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:24,135 INFO L225 Difference]: With dead ends: 2126 [2022-01-10 20:00:24,135 INFO L226 Difference]: Without dead ends: 1391 [2022-01-10 20:00:24,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:24,137 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 717 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:24,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 725 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:24,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-10 20:00:24,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-10 20:00:24,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.3794096472282218) internal successors, (1916), 1390 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:24,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1916 transitions. [2022-01-10 20:00:24,207 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1916 transitions. Word has length 77 [2022-01-10 20:00:24,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:24,207 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1916 transitions. [2022-01-10 20:00:24,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:24,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1916 transitions. [2022-01-10 20:00:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:00:24,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:24,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:24,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 20:00:24,208 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:24,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:24,210 INFO L85 PathProgramCache]: Analyzing trace with hash 2001563849, now seen corresponding path program 1 times [2022-01-10 20:00:24,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:24,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293948269] [2022-01-10 20:00:24,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:24,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:24,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:24,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293948269] [2022-01-10 20:00:24,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293948269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:24,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:24,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:24,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798514854] [2022-01-10 20:00:24,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:24,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:24,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:24,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:24,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:24,232 INFO L87 Difference]: Start difference. First operand 1391 states and 1916 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:24,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:24,309 INFO L93 Difference]: Finished difference Result 2125 states and 2995 transitions. [2022-01-10 20:00:24,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:24,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:00:24,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:24,313 INFO L225 Difference]: With dead ends: 2125 [2022-01-10 20:00:24,313 INFO L226 Difference]: Without dead ends: 1391 [2022-01-10 20:00:24,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:24,314 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 711 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:24,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 720 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:24,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-10 20:00:24,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-10 20:00:24,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.3736501079913608) internal successors, (1908), 1390 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:24,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1908 transitions. [2022-01-10 20:00:24,405 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1908 transitions. Word has length 77 [2022-01-10 20:00:24,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:24,405 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1908 transitions. [2022-01-10 20:00:24,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:24,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1908 transitions. [2022-01-10 20:00:24,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:00:24,406 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:24,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:24,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 20:00:24,407 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:24,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:24,407 INFO L85 PathProgramCache]: Analyzing trace with hash -245190743, now seen corresponding path program 1 times [2022-01-10 20:00:24,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:24,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466425762] [2022-01-10 20:00:24,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:24,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:24,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:24,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466425762] [2022-01-10 20:00:24,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466425762] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:24,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:24,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:24,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773228976] [2022-01-10 20:00:24,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:24,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:24,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:24,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:24,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:24,438 INFO L87 Difference]: Start difference. First operand 1391 states and 1908 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:24,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:24,542 INFO L93 Difference]: Finished difference Result 2124 states and 2978 transitions. [2022-01-10 20:00:24,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:24,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:00:24,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:24,546 INFO L225 Difference]: With dead ends: 2124 [2022-01-10 20:00:24,546 INFO L226 Difference]: Without dead ends: 1391 [2022-01-10 20:00:24,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:24,549 INFO L933 BasicCegarLoop]: 715 mSDtfsCounter, 705 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:24,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 715 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:24,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-10 20:00:24,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-10 20:00:24,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.3678905687544995) internal successors, (1900), 1390 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1900 transitions. [2022-01-10 20:00:24,619 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1900 transitions. Word has length 77 [2022-01-10 20:00:24,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:24,619 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1900 transitions. [2022-01-10 20:00:24,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:24,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1900 transitions. [2022-01-10 20:00:24,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:00:24,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:24,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:24,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 20:00:24,620 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:24,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:24,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1841687351, now seen corresponding path program 1 times [2022-01-10 20:00:24,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:24,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536300548] [2022-01-10 20:00:24,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:24,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:24,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:24,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:24,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536300548] [2022-01-10 20:00:24,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536300548] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:24,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:24,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:24,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735424551] [2022-01-10 20:00:24,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:24,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:24,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:24,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:24,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:24,648 INFO L87 Difference]: Start difference. First operand 1391 states and 1900 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:24,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:24,730 INFO L93 Difference]: Finished difference Result 2123 states and 2961 transitions. [2022-01-10 20:00:24,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:24,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:00:24,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:24,734 INFO L225 Difference]: With dead ends: 2123 [2022-01-10 20:00:24,734 INFO L226 Difference]: Without dead ends: 1391 [2022-01-10 20:00:24,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:24,735 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 640 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:24,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 744 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:24,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-10 20:00:24,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-10 20:00:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.353491720662347) internal successors, (1880), 1390 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:24,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1880 transitions. [2022-01-10 20:00:24,811 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1880 transitions. Word has length 77 [2022-01-10 20:00:24,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:24,811 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1880 transitions. [2022-01-10 20:00:24,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:24,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1880 transitions. [2022-01-10 20:00:24,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:00:24,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:24,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:24,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 20:00:24,812 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:24,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:24,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1847796184, now seen corresponding path program 1 times [2022-01-10 20:00:24,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:24,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559417642] [2022-01-10 20:00:24,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:24,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:24,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:24,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559417642] [2022-01-10 20:00:24,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559417642] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:24,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:24,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:24,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383278988] [2022-01-10 20:00:24,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:24,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:24,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:24,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:24,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:24,833 INFO L87 Difference]: Start difference. First operand 1391 states and 1880 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:24,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:24,914 INFO L93 Difference]: Finished difference Result 2122 states and 2920 transitions. [2022-01-10 20:00:24,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:24,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:00:24,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:24,918 INFO L225 Difference]: With dead ends: 2122 [2022-01-10 20:00:24,918 INFO L226 Difference]: Without dead ends: 1391 [2022-01-10 20:00:24,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:24,919 INFO L933 BasicCegarLoop]: 684 mSDtfsCounter, 628 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:24,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 731 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:24,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-10 20:00:25,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-10 20:00:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.3390928725701945) internal successors, (1860), 1390 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:25,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1860 transitions. [2022-01-10 20:00:25,016 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1860 transitions. Word has length 77 [2022-01-10 20:00:25,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:25,016 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1860 transitions. [2022-01-10 20:00:25,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:25,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1860 transitions. [2022-01-10 20:00:25,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:00:25,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:25,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:25,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 20:00:25,019 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:25,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:25,019 INFO L85 PathProgramCache]: Analyzing trace with hash -659953401, now seen corresponding path program 1 times [2022-01-10 20:00:25,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:25,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321345741] [2022-01-10 20:00:25,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:25,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:25,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:25,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321345741] [2022-01-10 20:00:25,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321345741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:25,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:25,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:25,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752650876] [2022-01-10 20:00:25,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:25,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:25,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:25,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:25,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:25,044 INFO L87 Difference]: Start difference. First operand 1391 states and 1860 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:25,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:25,170 INFO L93 Difference]: Finished difference Result 2121 states and 2879 transitions. [2022-01-10 20:00:25,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:25,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:00:25,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:25,174 INFO L225 Difference]: With dead ends: 2121 [2022-01-10 20:00:25,174 INFO L226 Difference]: Without dead ends: 1391 [2022-01-10 20:00:25,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:25,176 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 616 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:25,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 718 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:25,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-10 20:00:25,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-10 20:00:25,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.3246940244780419) internal successors, (1840), 1390 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:25,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1840 transitions. [2022-01-10 20:00:25,270 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1840 transitions. Word has length 77 [2022-01-10 20:00:25,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:25,270 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1840 transitions. [2022-01-10 20:00:25,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:25,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1840 transitions. [2022-01-10 20:00:25,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:00:25,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:25,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:25,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 20:00:25,272 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:25,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:25,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1577226010, now seen corresponding path program 1 times [2022-01-10 20:00:25,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:25,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817518473] [2022-01-10 20:00:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:25,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:25,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:25,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817518473] [2022-01-10 20:00:25,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817518473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:25,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:25,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:25,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496012817] [2022-01-10 20:00:25,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:25,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:25,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:25,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:25,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:25,305 INFO L87 Difference]: Start difference. First operand 1391 states and 1840 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:25,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:25,396 INFO L93 Difference]: Finished difference Result 2120 states and 2838 transitions. [2022-01-10 20:00:25,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:25,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:00:25,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:25,400 INFO L225 Difference]: With dead ends: 2120 [2022-01-10 20:00:25,400 INFO L226 Difference]: Without dead ends: 1391 [2022-01-10 20:00:25,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:25,401 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 604 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:25,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 705 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:25,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-10 20:00:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-10 20:00:25,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.3102951763858892) internal successors, (1820), 1390 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:25,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1820 transitions. [2022-01-10 20:00:25,472 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1820 transitions. Word has length 77 [2022-01-10 20:00:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:25,474 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1820 transitions. [2022-01-10 20:00:25,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:25,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1820 transitions. [2022-01-10 20:00:25,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:00:25,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:25,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:25,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 20:00:25,475 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:25,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:25,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2075830853, now seen corresponding path program 1 times [2022-01-10 20:00:25,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:25,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590748372] [2022-01-10 20:00:25,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:25,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:25,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:25,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:25,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590748372] [2022-01-10 20:00:25,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590748372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:25,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:25,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:25,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001261331] [2022-01-10 20:00:25,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:25,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:25,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:25,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:25,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:25,496 INFO L87 Difference]: Start difference. First operand 1391 states and 1820 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:25,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:25,587 INFO L93 Difference]: Finished difference Result 2119 states and 2797 transitions. [2022-01-10 20:00:25,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:25,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:00:25,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:25,590 INFO L225 Difference]: With dead ends: 2119 [2022-01-10 20:00:25,591 INFO L226 Difference]: Without dead ends: 1391 [2022-01-10 20:00:25,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:25,592 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 592 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:25,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 692 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-10 20:00:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-10 20:00:25,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.2958963282937366) internal successors, (1800), 1390 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:25,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1800 transitions. [2022-01-10 20:00:25,699 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1800 transitions. Word has length 77 [2022-01-10 20:00:25,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:25,699 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1800 transitions. [2022-01-10 20:00:25,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:25,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1800 transitions. [2022-01-10 20:00:25,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:00:25,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:25,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:25,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 20:00:25,701 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:25,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:25,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1725779804, now seen corresponding path program 1 times [2022-01-10 20:00:25,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:25,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891823366] [2022-01-10 20:00:25,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:25,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:25,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:25,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891823366] [2022-01-10 20:00:25,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891823366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:25,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:25,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:00:25,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239344938] [2022-01-10 20:00:25,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:25,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:00:25,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:25,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:00:25,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:00:25,738 INFO L87 Difference]: Start difference. First operand 1391 states and 1800 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:25,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:25,892 INFO L93 Difference]: Finished difference Result 2490 states and 3269 transitions. [2022-01-10 20:00:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:00:25,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:00:25,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:25,905 INFO L225 Difference]: With dead ends: 2490 [2022-01-10 20:00:25,905 INFO L226 Difference]: Without dead ends: 1769 [2022-01-10 20:00:25,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:00:25,906 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 1512 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:25,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1512 Valid, 1800 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:00:25,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2022-01-10 20:00:26,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1397. [2022-01-10 20:00:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1395 states have (on average 1.2860215053763442) internal successors, (1794), 1396 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:26,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1794 transitions. [2022-01-10 20:00:26,010 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1794 transitions. Word has length 77 [2022-01-10 20:00:26,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:26,011 INFO L470 AbstractCegarLoop]: Abstraction has 1397 states and 1794 transitions. [2022-01-10 20:00:26,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:26,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1794 transitions. [2022-01-10 20:00:26,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:00:26,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:26,012 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] [2022-01-10 20:00:26,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 20:00:26,012 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:26,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:26,012 INFO L85 PathProgramCache]: Analyzing trace with hash -592589211, now seen corresponding path program 1 times [2022-01-10 20:00:26,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:26,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260338160] [2022-01-10 20:00:26,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:26,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:26,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:26,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260338160] [2022-01-10 20:00:26,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260338160] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:26,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:26,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:00:26,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595174380] [2022-01-10 20:00:26,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:26,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:00:26,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:26,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:00:26,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:00:26,040 INFO L87 Difference]: Start difference. First operand 1397 states and 1794 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:26,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:26,195 INFO L93 Difference]: Finished difference Result 2606 states and 3384 transitions. [2022-01-10 20:00:26,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:00:26,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:00:26,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:26,199 INFO L225 Difference]: With dead ends: 2606 [2022-01-10 20:00:26,199 INFO L226 Difference]: Without dead ends: 1893 [2022-01-10 20:00:26,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:00:26,201 INFO L933 BasicCegarLoop]: 665 mSDtfsCounter, 1318 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:26,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1318 Valid, 2062 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:26,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2022-01-10 20:00:26,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1403. [2022-01-10 20:00:26,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1401 states have (on average 1.2762312633832977) internal successors, (1788), 1402 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:26,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1788 transitions. [2022-01-10 20:00:26,324 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1788 transitions. Word has length 77 [2022-01-10 20:00:26,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:26,324 INFO L470 AbstractCegarLoop]: Abstraction has 1403 states and 1788 transitions. [2022-01-10 20:00:26,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:26,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1788 transitions. [2022-01-10 20:00:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:00:26,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:26,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:26,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 20:00:26,327 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:26,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:26,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1515272794, now seen corresponding path program 1 times [2022-01-10 20:00:26,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:26,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663634943] [2022-01-10 20:00:26,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:26,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:26,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:26,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:26,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663634943] [2022-01-10 20:00:26,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663634943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:26,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:26,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:00:26,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205436437] [2022-01-10 20:00:26,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:26,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:00:26,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:26,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:00:26,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:00:26,364 INFO L87 Difference]: Start difference. First operand 1403 states and 1788 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:26,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:26,561 INFO L93 Difference]: Finished difference Result 2673 states and 3434 transitions. [2022-01-10 20:00:26,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:00:26,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:00:26,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:26,567 INFO L225 Difference]: With dead ends: 2673 [2022-01-10 20:00:26,567 INFO L226 Difference]: Without dead ends: 1961 [2022-01-10 20:00:26,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:00:26,569 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 1215 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 2174 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:26,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 2174 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:26,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2022-01-10 20:00:26,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1409. [2022-01-10 20:00:26,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1407 states have (on average 1.2665245202558635) internal successors, (1782), 1408 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 1782 transitions. [2022-01-10 20:00:26,657 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 1782 transitions. Word has length 77 [2022-01-10 20:00:26,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:26,657 INFO L470 AbstractCegarLoop]: Abstraction has 1409 states and 1782 transitions. [2022-01-10 20:00:26,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:26,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 1782 transitions. [2022-01-10 20:00:26,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 20:00:26,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:26,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:26,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 20:00:26,659 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:26,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:26,659 INFO L85 PathProgramCache]: Analyzing trace with hash 596017575, now seen corresponding path program 1 times [2022-01-10 20:00:26,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:26,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320968041] [2022-01-10 20:00:26,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:26,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:26,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:26,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320968041] [2022-01-10 20:00:26,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320968041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:26,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:26,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:26,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972103798] [2022-01-10 20:00:26,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:26,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:26,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:26,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:26,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:26,689 INFO L87 Difference]: Start difference. First operand 1409 states and 1782 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:26,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:26,830 INFO L93 Difference]: Finished difference Result 2824 states and 3570 transitions. [2022-01-10 20:00:26,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:26,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 20:00:26,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:26,835 INFO L225 Difference]: With dead ends: 2824 [2022-01-10 20:00:26,835 INFO L226 Difference]: Without dead ends: 2080 [2022-01-10 20:00:26,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:26,837 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 540 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:26,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 1067 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:26,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2022-01-10 20:00:26,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2012. [2022-01-10 20:00:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 2010 states have (on average 1.2611940298507462) internal successors, (2535), 2011 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:26,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 2535 transitions. [2022-01-10 20:00:26,963 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 2535 transitions. Word has length 77 [2022-01-10 20:00:26,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:26,964 INFO L470 AbstractCegarLoop]: Abstraction has 2012 states and 2535 transitions. [2022-01-10 20:00:26,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:26,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 2535 transitions. [2022-01-10 20:00:26,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 20:00:26,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:26,965 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:26,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 20:00:26,965 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:26,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:26,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1431008906, now seen corresponding path program 1 times [2022-01-10 20:00:26,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:26,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108796607] [2022-01-10 20:00:26,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:26,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 20:00:26,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:26,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108796607] [2022-01-10 20:00:26,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108796607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:26,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:26,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:26,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219124058] [2022-01-10 20:00:26,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:26,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:26,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:26,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:26,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:26,988 INFO L87 Difference]: Start difference. First operand 2012 states and 2535 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:27,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:27,137 INFO L93 Difference]: Finished difference Result 2666 states and 3362 transitions. [2022-01-10 20:00:27,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:27,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 84 [2022-01-10 20:00:27,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:27,140 INFO L225 Difference]: With dead ends: 2666 [2022-01-10 20:00:27,140 INFO L226 Difference]: Without dead ends: 2030 [2022-01-10 20:00:27,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:27,142 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 573 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:27,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 729 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:27,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2022-01-10 20:00:27,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 2012. [2022-01-10 20:00:27,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 2010 states have (on average 1.2512437810945274) internal successors, (2515), 2011 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:27,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 2515 transitions. [2022-01-10 20:00:27,268 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 2515 transitions. Word has length 84 [2022-01-10 20:00:27,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:27,269 INFO L470 AbstractCegarLoop]: Abstraction has 2012 states and 2515 transitions. [2022-01-10 20:00:27,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:27,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 2515 transitions. [2022-01-10 20:00:27,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 20:00:27,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:27,270 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:27,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 20:00:27,270 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:27,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:27,270 INFO L85 PathProgramCache]: Analyzing trace with hash -462840288, now seen corresponding path program 1 times [2022-01-10 20:00:27,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:27,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730484609] [2022-01-10 20:00:27,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:27,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 20:00:27,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:27,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730484609] [2022-01-10 20:00:27,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730484609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:27,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:27,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:27,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434698906] [2022-01-10 20:00:27,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:27,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:27,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:27,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:27,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:27,298 INFO L87 Difference]: Start difference. First operand 2012 states and 2515 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:27,417 INFO L93 Difference]: Finished difference Result 2276 states and 2833 transitions. [2022-01-10 20:00:27,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:27,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 85 [2022-01-10 20:00:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:27,420 INFO L225 Difference]: With dead ends: 2276 [2022-01-10 20:00:27,420 INFO L226 Difference]: Without dead ends: 1370 [2022-01-10 20:00:27,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:27,421 INFO L933 BasicCegarLoop]: 671 mSDtfsCounter, 56 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:27,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 1274 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:27,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2022-01-10 20:00:27,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1370. [2022-01-10 20:00:27,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 1.2556610664718773) internal successors, (1719), 1369 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:27,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1719 transitions. [2022-01-10 20:00:27,498 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1719 transitions. Word has length 85 [2022-01-10 20:00:27,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:27,498 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 1719 transitions. [2022-01-10 20:00:27,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:27,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1719 transitions. [2022-01-10 20:00:27,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 20:00:27,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:27,499 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:27,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 20:00:27,499 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:27,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:27,500 INFO L85 PathProgramCache]: Analyzing trace with hash 328893201, now seen corresponding path program 1 times [2022-01-10 20:00:27,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:27,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901532917] [2022-01-10 20:00:27,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:27,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:27,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:27,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901532917] [2022-01-10 20:00:27,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901532917] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:27,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:27,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:27,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104386120] [2022-01-10 20:00:27,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:27,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:27,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:27,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:27,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:27,527 INFO L87 Difference]: Start difference. First operand 1370 states and 1719 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:27,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:27,698 INFO L93 Difference]: Finished difference Result 3951 states and 4973 transitions. [2022-01-10 20:00:27,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:27,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 20:00:27,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:27,702 INFO L225 Difference]: With dead ends: 3951 [2022-01-10 20:00:27,702 INFO L226 Difference]: Without dead ends: 2610 [2022-01-10 20:00:27,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:27,704 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 451 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:27,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 963 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:27,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2022-01-10 20:00:27,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 2480. [2022-01-10 20:00:27,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 2479 states have (on average 1.253327954820492) internal successors, (3107), 2479 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:27,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 3107 transitions. [2022-01-10 20:00:27,900 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 3107 transitions. Word has length 124 [2022-01-10 20:00:27,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:27,900 INFO L470 AbstractCegarLoop]: Abstraction has 2480 states and 3107 transitions. [2022-01-10 20:00:27,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:27,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 3107 transitions. [2022-01-10 20:00:27,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 20:00:27,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:27,902 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:27,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 20:00:27,902 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:27,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:27,902 INFO L85 PathProgramCache]: Analyzing trace with hash 876613170, now seen corresponding path program 1 times [2022-01-10 20:00:27,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:27,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670825710] [2022-01-10 20:00:27,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:27,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:27,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:27,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:27,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670825710] [2022-01-10 20:00:27,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670825710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:27,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:27,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:27,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181373657] [2022-01-10 20:00:27,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:27,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:27,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:27,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:27,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:27,946 INFO L87 Difference]: Start difference. First operand 2480 states and 3107 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:28,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:28,271 INFO L93 Difference]: Finished difference Result 7213 states and 8980 transitions. [2022-01-10 20:00:28,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:28,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 20:00:28,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:28,277 INFO L225 Difference]: With dead ends: 7213 [2022-01-10 20:00:28,277 INFO L226 Difference]: Without dead ends: 4799 [2022-01-10 20:00:28,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:28,280 INFO L933 BasicCegarLoop]: 661 mSDtfsCounter, 457 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:28,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 1167 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:28,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2022-01-10 20:00:28,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 4685. [2022-01-10 20:00:28,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 4684 states have (on average 1.2339880444064901) internal successors, (5780), 4684 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:28,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 5780 transitions. [2022-01-10 20:00:28,568 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 5780 transitions. Word has length 124 [2022-01-10 20:00:28,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:28,568 INFO L470 AbstractCegarLoop]: Abstraction has 4685 states and 5780 transitions. [2022-01-10 20:00:28,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:28,568 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 5780 transitions. [2022-01-10 20:00:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 20:00:28,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:28,570 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:28,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 20:00:28,571 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:28,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:28,571 INFO L85 PathProgramCache]: Analyzing trace with hash -573554481, now seen corresponding path program 1 times [2022-01-10 20:00:28,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:28,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586962458] [2022-01-10 20:00:28,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:28,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:28,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 20:00:28,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:28,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586962458] [2022-01-10 20:00:28,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586962458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:28,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:28,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:28,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611101910] [2022-01-10 20:00:28,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:28,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:28,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:28,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:28,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:28,596 INFO L87 Difference]: Start difference. First operand 4685 states and 5780 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:28,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:28,879 INFO L93 Difference]: Finished difference Result 9278 states and 11454 transitions. [2022-01-10 20:00:28,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:28,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 20:00:28,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:28,886 INFO L225 Difference]: With dead ends: 9278 [2022-01-10 20:00:28,887 INFO L226 Difference]: Without dead ends: 4626 [2022-01-10 20:00:28,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:28,892 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 527 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:28,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 533 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:28,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4626 states. [2022-01-10 20:00:29,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4626 to 4626. [2022-01-10 20:00:29,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 4625 states have (on average 1.235027027027027) internal successors, (5712), 4625 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 5712 transitions. [2022-01-10 20:00:29,194 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 5712 transitions. Word has length 124 [2022-01-10 20:00:29,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:29,194 INFO L470 AbstractCegarLoop]: Abstraction has 4626 states and 5712 transitions. [2022-01-10 20:00:29,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:29,194 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 5712 transitions. [2022-01-10 20:00:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 20:00:29,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:29,196 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:29,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 20:00:29,197 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:29,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:29,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1756113559, now seen corresponding path program 1 times [2022-01-10 20:00:29,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:29,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705269410] [2022-01-10 20:00:29,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:29,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:29,230 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:29,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:29,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705269410] [2022-01-10 20:00:29,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705269410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:29,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:29,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:29,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025442953] [2022-01-10 20:00:29,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:29,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:29,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:29,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:29,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:29,231 INFO L87 Difference]: Start difference. First operand 4626 states and 5712 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:29,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:29,850 INFO L93 Difference]: Finished difference Result 13036 states and 16059 transitions. [2022-01-10 20:00:29,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:29,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 20:00:29,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:29,863 INFO L225 Difference]: With dead ends: 13036 [2022-01-10 20:00:29,863 INFO L226 Difference]: Without dead ends: 8476 [2022-01-10 20:00:29,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:29,869 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 354 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:29,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 1207 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:29,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8476 states. [2022-01-10 20:00:30,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8476 to 8474. [2022-01-10 20:00:30,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8474 states, 8473 states have (on average 1.225185884574531) internal successors, (10381), 8473 states have internal predecessors, (10381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8474 states to 8474 states and 10381 transitions. [2022-01-10 20:00:30,431 INFO L78 Accepts]: Start accepts. Automaton has 8474 states and 10381 transitions. Word has length 125 [2022-01-10 20:00:30,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:30,431 INFO L470 AbstractCegarLoop]: Abstraction has 8474 states and 10381 transitions. [2022-01-10 20:00:30,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:30,431 INFO L276 IsEmpty]: Start isEmpty. Operand 8474 states and 10381 transitions. [2022-01-10 20:00:30,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 20:00:30,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:30,435 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:30,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 20:00:30,435 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:30,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:30,435 INFO L85 PathProgramCache]: Analyzing trace with hash -529867768, now seen corresponding path program 1 times [2022-01-10 20:00:30,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:30,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133405314] [2022-01-10 20:00:30,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:30,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 20:00:30,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:30,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133405314] [2022-01-10 20:00:30,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133405314] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:30,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:30,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:30,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461153310] [2022-01-10 20:00:30,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:30,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:30,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:30,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:30,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:30,457 INFO L87 Difference]: Start difference. First operand 8474 states and 10381 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:30,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:30,987 INFO L93 Difference]: Finished difference Result 16824 states and 20622 transitions. [2022-01-10 20:00:30,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:30,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 20:00:30,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:30,998 INFO L225 Difference]: With dead ends: 16824 [2022-01-10 20:00:30,998 INFO L226 Difference]: Without dead ends: 8416 [2022-01-10 20:00:31,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:31,008 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 525 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:31,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 532 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:31,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8416 states. [2022-01-10 20:00:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8416 to 8416. [2022-01-10 20:00:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8416 states, 8415 states have (on average 1.225787284610814) internal successors, (10315), 8415 states have internal predecessors, (10315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:31,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8416 states to 8416 states and 10315 transitions. [2022-01-10 20:00:31,558 INFO L78 Accepts]: Start accepts. Automaton has 8416 states and 10315 transitions. Word has length 125 [2022-01-10 20:00:31,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:31,558 INFO L470 AbstractCegarLoop]: Abstraction has 8416 states and 10315 transitions. [2022-01-10 20:00:31,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:31,558 INFO L276 IsEmpty]: Start isEmpty. Operand 8416 states and 10315 transitions. [2022-01-10 20:00:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 20:00:31,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:31,561 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:31,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 20:00:31,561 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:31,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:31,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1520287299, now seen corresponding path program 1 times [2022-01-10 20:00:31,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:31,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692207055] [2022-01-10 20:00:31,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:31,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:31,592 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:31,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:31,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692207055] [2022-01-10 20:00:31,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692207055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:31,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:31,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:31,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467730094] [2022-01-10 20:00:31,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:31,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:31,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:31,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:31,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:31,594 INFO L87 Difference]: Start difference. First operand 8416 states and 10315 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:32,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:32,707 INFO L93 Difference]: Finished difference Result 23805 states and 29148 transitions. [2022-01-10 20:00:32,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:32,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 20:00:32,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:32,729 INFO L225 Difference]: With dead ends: 23805 [2022-01-10 20:00:32,729 INFO L226 Difference]: Without dead ends: 15455 [2022-01-10 20:00:32,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:32,739 INFO L933 BasicCegarLoop]: 665 mSDtfsCounter, 359 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:32,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 1174 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:32,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15455 states. [2022-01-10 20:00:33,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15455 to 15453. [2022-01-10 20:00:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15453 states, 15452 states have (on average 1.219906808180171) internal successors, (18850), 15452 states have internal predecessors, (18850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15453 states to 15453 states and 18850 transitions. [2022-01-10 20:00:33,787 INFO L78 Accepts]: Start accepts. Automaton has 15453 states and 18850 transitions. Word has length 126 [2022-01-10 20:00:33,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:33,788 INFO L470 AbstractCegarLoop]: Abstraction has 15453 states and 18850 transitions. [2022-01-10 20:00:33,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:33,788 INFO L276 IsEmpty]: Start isEmpty. Operand 15453 states and 18850 transitions. [2022-01-10 20:00:33,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 20:00:33,793 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:33,793 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:33,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-10 20:00:33,794 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:33,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:33,794 INFO L85 PathProgramCache]: Analyzing trace with hash -294041508, now seen corresponding path program 1 times [2022-01-10 20:00:33,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:33,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538275658] [2022-01-10 20:00:33,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:33,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 20:00:33,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:33,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538275658] [2022-01-10 20:00:33,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538275658] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:33,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:33,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:33,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600134894] [2022-01-10 20:00:33,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:33,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:33,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:33,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:33,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:33,814 INFO L87 Difference]: Start difference. First operand 15453 states and 18850 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:34,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:34,818 INFO L93 Difference]: Finished difference Result 30783 states and 37563 transitions. [2022-01-10 20:00:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:34,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 20:00:34,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:34,852 INFO L225 Difference]: With dead ends: 30783 [2022-01-10 20:00:34,852 INFO L226 Difference]: Without dead ends: 15396 [2022-01-10 20:00:34,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:34,869 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 523 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:34,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 531 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:34,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15396 states. [2022-01-10 20:00:36,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15396 to 15396. [2022-01-10 20:00:36,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15396 states, 15395 states have (on average 1.2202663202338422) internal successors, (18786), 15395 states have internal predecessors, (18786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15396 states to 15396 states and 18786 transitions. [2022-01-10 20:00:36,080 INFO L78 Accepts]: Start accepts. Automaton has 15396 states and 18786 transitions. Word has length 126 [2022-01-10 20:00:36,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:36,080 INFO L470 AbstractCegarLoop]: Abstraction has 15396 states and 18786 transitions. [2022-01-10 20:00:36,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 15396 states and 18786 transitions. [2022-01-10 20:00:36,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 20:00:36,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:36,085 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:36,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-10 20:00:36,085 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:36,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:36,085 INFO L85 PathProgramCache]: Analyzing trace with hash -796034982, now seen corresponding path program 1 times [2022-01-10 20:00:36,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:36,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145832348] [2022-01-10 20:00:36,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:36,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:36,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:36,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145832348] [2022-01-10 20:00:36,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145832348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:36,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:36,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:36,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674297650] [2022-01-10 20:00:36,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:36,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:36,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:36,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:36,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:36,121 INFO L87 Difference]: Start difference. First operand 15396 states and 18786 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:37,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:37,968 INFO L93 Difference]: Finished difference Result 43584 states and 53105 transitions. [2022-01-10 20:00:37,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:37,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 20:00:37,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:38,006 INFO L225 Difference]: With dead ends: 43584 [2022-01-10 20:00:38,006 INFO L226 Difference]: Without dead ends: 28254 [2022-01-10 20:00:38,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:38,024 INFO L933 BasicCegarLoop]: 596 mSDtfsCounter, 456 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:38,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 1096 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:38,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28254 states. [2022-01-10 20:00:39,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28254 to 27996. [2022-01-10 20:00:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27996 states, 27995 states have (on average 1.2161814609751742) internal successors, (34047), 27995 states have internal predecessors, (34047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:39,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27996 states to 27996 states and 34047 transitions. [2022-01-10 20:00:39,943 INFO L78 Accepts]: Start accepts. Automaton has 27996 states and 34047 transitions. Word has length 127 [2022-01-10 20:00:39,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:39,943 INFO L470 AbstractCegarLoop]: Abstraction has 27996 states and 34047 transitions. [2022-01-10 20:00:39,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:39,943 INFO L276 IsEmpty]: Start isEmpty. Operand 27996 states and 34047 transitions. [2022-01-10 20:00:39,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 20:00:39,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:39,950 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:39,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-10 20:00:39,950 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:39,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:39,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1688508091, now seen corresponding path program 1 times [2022-01-10 20:00:39,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:39,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971388224] [2022-01-10 20:00:39,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:39,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 20:00:39,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:39,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971388224] [2022-01-10 20:00:39,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971388224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:39,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:39,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:39,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103483961] [2022-01-10 20:00:39,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:39,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:39,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:39,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:39,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:39,984 INFO L87 Difference]: Start difference. First operand 27996 states and 34047 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:41,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:41,997 INFO L93 Difference]: Finished difference Result 55882 states and 67972 transitions. [2022-01-10 20:00:41,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:41,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 20:00:41,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:42,034 INFO L225 Difference]: With dead ends: 55882 [2022-01-10 20:00:42,034 INFO L226 Difference]: Without dead ends: 27940 [2022-01-10 20:00:42,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:42,064 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 521 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:42,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 530 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:42,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27940 states. [2022-01-10 20:00:44,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27940 to 27940. [2022-01-10 20:00:44,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27940 states, 27939 states have (on average 1.2164000143169047) internal successors, (33985), 27939 states have internal predecessors, (33985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:44,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27940 states to 27940 states and 33985 transitions. [2022-01-10 20:00:44,188 INFO L78 Accepts]: Start accepts. Automaton has 27940 states and 33985 transitions. Word has length 127 [2022-01-10 20:00:44,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:44,188 INFO L470 AbstractCegarLoop]: Abstraction has 27940 states and 33985 transitions. [2022-01-10 20:00:44,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:44,188 INFO L276 IsEmpty]: Start isEmpty. Operand 27940 states and 33985 transitions. [2022-01-10 20:00:44,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 20:00:44,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:44,194 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:44,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-10 20:00:44,195 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:44,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:44,195 INFO L85 PathProgramCache]: Analyzing trace with hash 196656719, now seen corresponding path program 1 times [2022-01-10 20:00:44,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:44,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149053333] [2022-01-10 20:00:44,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:44,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:44,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:44,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149053333] [2022-01-10 20:00:44,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149053333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:44,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:44,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:44,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578745654] [2022-01-10 20:00:44,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:44,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:44,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:44,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:44,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:44,234 INFO L87 Difference]: Start difference. First operand 27940 states and 33985 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:47,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:47,999 INFO L93 Difference]: Finished difference Result 80706 states and 98067 transitions. [2022-01-10 20:00:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:47,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-01-10 20:00:47,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:48,056 INFO L225 Difference]: With dead ends: 80706 [2022-01-10 20:00:48,057 INFO L226 Difference]: Without dead ends: 40508 [2022-01-10 20:00:48,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:48,085 INFO L933 BasicCegarLoop]: 975 mSDtfsCounter, 452 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:48,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 1490 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:48,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40508 states. [2022-01-10 20:00:51,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40508 to 40508. [2022-01-10 20:00:51,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40508 states, 40507 states have (on average 1.2113461870787765) internal successors, (49068), 40507 states have internal predecessors, (49068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:51,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40508 states to 40508 states and 49068 transitions. [2022-01-10 20:00:51,394 INFO L78 Accepts]: Start accepts. Automaton has 40508 states and 49068 transitions. Word has length 128 [2022-01-10 20:00:51,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:51,395 INFO L470 AbstractCegarLoop]: Abstraction has 40508 states and 49068 transitions. [2022-01-10 20:00:51,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:51,395 INFO L276 IsEmpty]: Start isEmpty. Operand 40508 states and 49068 transitions. [2022-01-10 20:00:51,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 20:00:51,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:51,410 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:51,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-10 20:00:51,411 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:51,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:51,411 INFO L85 PathProgramCache]: Analyzing trace with hash 559800921, now seen corresponding path program 1 times [2022-01-10 20:00:51,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:51,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845273948] [2022-01-10 20:00:51,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:51,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:00:51,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:51,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845273948] [2022-01-10 20:00:51,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845273948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:51,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:51,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:00:51,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316482671] [2022-01-10 20:00:51,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:51,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:51,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:51,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:51,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:51,460 INFO L87 Difference]: Start difference. First operand 40508 states and 49068 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:55,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:00:55,171 INFO L93 Difference]: Finished difference Result 93366 states and 112946 transitions. [2022-01-10 20:00:55,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:00:55,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2022-01-10 20:00:55,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:00:55,259 INFO L225 Difference]: With dead ends: 93366 [2022-01-10 20:00:55,259 INFO L226 Difference]: Without dead ends: 52907 [2022-01-10 20:00:55,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:55,304 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 335 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:00:55,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 958 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:00:55,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52907 states. [2022-01-10 20:00:59,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52907 to 52715. [2022-01-10 20:00:59,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52715 states, 52714 states have (on average 1.2039685851955837) internal successors, (63466), 52714 states have internal predecessors, (63466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52715 states to 52715 states and 63466 transitions. [2022-01-10 20:00:59,358 INFO L78 Accepts]: Start accepts. Automaton has 52715 states and 63466 transitions. Word has length 165 [2022-01-10 20:00:59,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:00:59,358 INFO L470 AbstractCegarLoop]: Abstraction has 52715 states and 63466 transitions. [2022-01-10 20:00:59,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:00:59,358 INFO L276 IsEmpty]: Start isEmpty. Operand 52715 states and 63466 transitions. [2022-01-10 20:00:59,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-10 20:00:59,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:00:59,384 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:00:59,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-10 20:00:59,384 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:00:59,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:00:59,385 INFO L85 PathProgramCache]: Analyzing trace with hash -470301814, now seen corresponding path program 1 times [2022-01-10 20:00:59,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:00:59,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256662899] [2022-01-10 20:00:59,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:00:59,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:00:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:00:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 20:00:59,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:00:59,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256662899] [2022-01-10 20:00:59,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256662899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:00:59,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:00:59,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:00:59,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575960353] [2022-01-10 20:00:59,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:00:59,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:00:59,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:00:59,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:00:59,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:00:59,421 INFO L87 Difference]: Start difference. First operand 52715 states and 63466 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:01:03,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:01:03,243 INFO L93 Difference]: Finished difference Result 104465 states and 125519 transitions. [2022-01-10 20:01:03,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:01:03,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 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 184 [2022-01-10 20:01:03,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:01:03,318 INFO L225 Difference]: With dead ends: 104465 [2022-01-10 20:01:03,318 INFO L226 Difference]: Without dead ends: 51815 [2022-01-10 20:01:03,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:01:03,355 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 376 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:01:03,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 983 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:01:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51815 states. [2022-01-10 20:01:07,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51815 to 51815. [2022-01-10 20:01:07,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51815 states, 51814 states have (on average 1.186590496776933) internal successors, (61482), 51814 states have internal predecessors, (61482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:01:07,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51815 states to 51815 states and 61482 transitions. [2022-01-10 20:01:07,478 INFO L78 Accepts]: Start accepts. Automaton has 51815 states and 61482 transitions. Word has length 184 [2022-01-10 20:01:07,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:01:07,479 INFO L470 AbstractCegarLoop]: Abstraction has 51815 states and 61482 transitions. [2022-01-10 20:01:07,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:01:07,479 INFO L276 IsEmpty]: Start isEmpty. Operand 51815 states and 61482 transitions. [2022-01-10 20:01:07,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 20:01:07,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:01:07,503 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:01:07,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-10 20:01:07,503 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:01:07,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:01:07,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1520719323, now seen corresponding path program 1 times [2022-01-10 20:01:07,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:01:07,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111837966] [2022-01-10 20:01:07,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:01:07,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:01:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:01:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:01:07,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:01:07,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111837966] [2022-01-10 20:01:07,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111837966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:01:07,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:01:07,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:01:07,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004693056] [2022-01-10 20:01:07,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:01:07,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:01:07,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:01:07,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:01:07,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:01:07,550 INFO L87 Difference]: Start difference. First operand 51815 states and 61482 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:01:11,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:01:11,344 INFO L93 Difference]: Finished difference Result 91539 states and 108888 transitions. [2022-01-10 20:01:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:01:11,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2022-01-10 20:01:11,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:01:11,423 INFO L225 Difference]: With dead ends: 91539 [2022-01-10 20:01:11,423 INFO L226 Difference]: Without dead ends: 51817 [2022-01-10 20:01:11,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:01:11,454 INFO L933 BasicCegarLoop]: 899 mSDtfsCounter, 379 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:01:11,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 1405 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:01:11,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51817 states. [2022-01-10 20:01:15,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51817 to 51815. [2022-01-10 20:01:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51815 states, 51814 states have (on average 1.184506118037596) internal successors, (61374), 51814 states have internal predecessors, (61374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:01:15,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51815 states to 51815 states and 61374 transitions. [2022-01-10 20:01:15,595 INFO L78 Accepts]: Start accepts. Automaton has 51815 states and 61374 transitions. Word has length 185 [2022-01-10 20:01:15,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:01:15,595 INFO L470 AbstractCegarLoop]: Abstraction has 51815 states and 61374 transitions. [2022-01-10 20:01:15,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:01:15,596 INFO L276 IsEmpty]: Start isEmpty. Operand 51815 states and 61374 transitions. [2022-01-10 20:01:15,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 20:01:15,700 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:01:15,700 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:01:15,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-10 20:01:15,700 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:01:15,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:01:15,701 INFO L85 PathProgramCache]: Analyzing trace with hash -136224691, now seen corresponding path program 1 times [2022-01-10 20:01:15,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:01:15,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552857510] [2022-01-10 20:01:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:01:15,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:01:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:01:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:01:15,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:01:15,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552857510] [2022-01-10 20:01:15,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552857510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:01:15,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:01:15,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:01:15,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487460234] [2022-01-10 20:01:15,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:01:15,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:01:15,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:01:15,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:01:15,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:01:15,743 INFO L87 Difference]: Start difference. First operand 51815 states and 61374 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:01:19,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:01:19,618 INFO L93 Difference]: Finished difference Result 91665 states and 108799 transitions. [2022-01-10 20:01:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:01:19,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2022-01-10 20:01:19,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:01:19,694 INFO L225 Difference]: With dead ends: 91665 [2022-01-10 20:01:19,694 INFO L226 Difference]: Without dead ends: 51943 [2022-01-10 20:01:19,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:01:19,723 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 412 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:01:19,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 1334 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:01:19,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51943 states. [2022-01-10 20:01:23,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51943 to 51815. [2022-01-10 20:01:23,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51815 states, 51814 states have (on average 1.167522291272629) internal successors, (60494), 51814 states have internal predecessors, (60494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:01:23,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51815 states to 51815 states and 60494 transitions. [2022-01-10 20:01:23,989 INFO L78 Accepts]: Start accepts. Automaton has 51815 states and 60494 transitions. Word has length 185 [2022-01-10 20:01:23,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:01:23,989 INFO L470 AbstractCegarLoop]: Abstraction has 51815 states and 60494 transitions. [2022-01-10 20:01:23,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:01:23,989 INFO L276 IsEmpty]: Start isEmpty. Operand 51815 states and 60494 transitions. [2022-01-10 20:01:24,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-01-10 20:01:24,027 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:01:24,027 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:01:24,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-10 20:01:24,028 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:01:24,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:01:24,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1874450956, now seen corresponding path program 1 times [2022-01-10 20:01:24,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:01:24,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927727897] [2022-01-10 20:01:24,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:01:24,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:01:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:01:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-10 20:01:24,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:01:24,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927727897] [2022-01-10 20:01:24,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927727897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:01:24,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:01:24,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:01:24,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645237738] [2022-01-10 20:01:24,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:01:24,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:01:24,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:01:24,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:01:24,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:01:24,091 INFO L87 Difference]: Start difference. First operand 51815 states and 60494 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)