/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label40+token_ring.05.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:32:53,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:32:53,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:32:53,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:32:53,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:32:53,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:32:53,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:32:53,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:32:53,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:32:53,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:32:53,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:32:53,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:32:53,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:32:53,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:32:53,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:32:53,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:32:53,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:32:53,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:32:53,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:32:53,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:32:53,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:32:53,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:32:53,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:32:53,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:32:53,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:32:53,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:32:53,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:32:53,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:32:53,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:32:53,157 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:32:53,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:32:53,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:32:53,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:32:53,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:32:53,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:32:53,159 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:32:53,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:32:53,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:32:53,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:32:53,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:32:53,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:32:53,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:32:53,159 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:32:53,160 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:32:53,160 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:32:53,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:32:53,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:32:53,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:32:53,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:32:53,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:32:53,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:32:53,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:32:53,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:32:53,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:32:53,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:32:53,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:32:53,162 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:32:53,162 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:32:53,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:32:53,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:32:53,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:32:53,162 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:32:53,163 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:32:53,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:32:53,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:32:53,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:32:53,365 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:32:53,367 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:32:53,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label40+token_ring.05.cil-1.c [2022-01-10 13:32:53,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baf6cc0f8/f27e2460ec504c29b04bdf1f072f20ca/FLAG434846d47 [2022-01-10 13:32:54,080 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:32:54,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.05.cil-1.c [2022-01-10 13:32:54,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baf6cc0f8/f27e2460ec504c29b04bdf1f072f20ca/FLAG434846d47 [2022-01-10 13:32:54,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baf6cc0f8/f27e2460ec504c29b04bdf1f072f20ca [2022-01-10 13:32:54,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:32:54,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:32:54,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:32:54,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:32:54,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:32:54,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:32:54" (1/1) ... [2022-01-10 13:32:54,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b6f4ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:54, skipping insertion in model container [2022-01-10 13:32:54,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:32:54" (1/1) ... [2022-01-10 13:32:54,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:32:54,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:32:55,545 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.05.cil-1.c[377069,377082] [2022-01-10 13:32:55,569 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.05.cil-1.c[383339,383352] [2022-01-10 13:32:55,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:32:55,752 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:32:56,289 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.05.cil-1.c[377069,377082] [2022-01-10 13:32:56,295 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.05.cil-1.c[383339,383352] [2022-01-10 13:32:56,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:32:56,387 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:32:56,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:56 WrapperNode [2022-01-10 13:32:56,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:32:56,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:32:56,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:32:56,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:32:56,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:56" (1/1) ... [2022-01-10 13:32:56,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:56" (1/1) ... [2022-01-10 13:32:56,753 INFO L137 Inliner]: procedures = 55, calls = 56, calls flagged for inlining = 51, calls inlined = 104, statements flattened = 13676 [2022-01-10 13:32:56,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:32:56,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:32:56,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:32:56,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:32:56,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:56" (1/1) ... [2022-01-10 13:32:56,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:56" (1/1) ... [2022-01-10 13:32:56,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:56" (1/1) ... [2022-01-10 13:32:56,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:56" (1/1) ... [2022-01-10 13:32:56,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:56" (1/1) ... [2022-01-10 13:32:57,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:56" (1/1) ... [2022-01-10 13:32:57,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:56" (1/1) ... [2022-01-10 13:32:57,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:32:57,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:32:57,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:32:57,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:32:57,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:56" (1/1) ... [2022-01-10 13:32:57,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:32:57,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:32:57,107 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 13:32:57,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 13:32:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:32:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:32:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:32:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:32:57,368 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:32:57,369 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:33:04,097 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:33:04,118 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:33:04,119 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-01-10 13:33:04,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:33:04 BoogieIcfgContainer [2022-01-10 13:33:04,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:33:04,124 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:33:04,124 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:33:04,125 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:33:04,127 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:33:04" (1/1) ... [2022-01-10 13:33:05,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:33:05 BasicIcfg [2022-01-10 13:33:05,277 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:33:05,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:33:05,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:33:05,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:33:05,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:32:54" (1/4) ... [2022-01-10 13:33:05,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15197aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:33:05, skipping insertion in model container [2022-01-10 13:33:05,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:32:56" (2/4) ... [2022-01-10 13:33:05,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15197aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:33:05, skipping insertion in model container [2022-01-10 13:33:05,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:33:04" (3/4) ... [2022-01-10 13:33:05,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15197aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:33:05, skipping insertion in model container [2022-01-10 13:33:05,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:33:05" (4/4) ... [2022-01-10 13:33:05,285 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.05.cil-1.cTransformedIcfg [2022-01-10 13:33:05,288 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:33:05,289 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 13:33:05,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:33:05,348 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 13:33:05,348 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 13:33:05,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 2736 states, 2733 states have (on average 1.8027808269301133) internal successors, (4927), 2735 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:05,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:33:05,403 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:05,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:05,404 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:05,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:05,408 INFO L85 PathProgramCache]: Analyzing trace with hash -403323338, now seen corresponding path program 1 times [2022-01-10 13:33:05,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:05,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377089551] [2022-01-10 13:33:05,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:05,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:05,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:05,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377089551] [2022-01-10 13:33:05,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377089551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:05,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:05,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:05,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54733837] [2022-01-10 13:33:05,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:05,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:05,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:05,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:05,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:05,635 INFO L87 Difference]: Start difference. First operand has 2736 states, 2733 states have (on average 1.8027808269301133) internal successors, (4927), 2735 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:05,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:05,882 INFO L93 Difference]: Finished difference Result 5888 states and 10485 transitions. [2022-01-10 13:33:05,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:05,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 13:33:05,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:05,910 INFO L225 Difference]: With dead ends: 5888 [2022-01-10 13:33:05,910 INFO L226 Difference]: Without dead ends: 3094 [2022-01-10 13:33:05,919 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 13:33:05,923 INFO L933 BasicCegarLoop]: 4840 mSDtfsCounter, 4766 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4766 SdHoareTripleChecker+Valid, 5532 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:05,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4766 Valid, 5532 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:33:05,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2022-01-10 13:33:06,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 3092. [2022-01-10 13:33:06,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.749190938511327) internal successors, (5405), 3091 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5405 transitions. [2022-01-10 13:33:06,060 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5405 transitions. Word has length 88 [2022-01-10 13:33:06,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:06,061 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5405 transitions. [2022-01-10 13:33:06,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:06,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5405 transitions. [2022-01-10 13:33:06,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:33:06,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:06,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:06,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:33:06,070 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:06,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:06,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1667105878, now seen corresponding path program 1 times [2022-01-10 13:33:06,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:06,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942083839] [2022-01-10 13:33:06,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:06,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:06,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:06,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:06,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942083839] [2022-01-10 13:33:06,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942083839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:06,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:06,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:06,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831011122] [2022-01-10 13:33:06,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:06,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:06,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:06,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:06,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:06,195 INFO L87 Difference]: Start difference. First operand 3092 states and 5405 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:06,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:06,258 INFO L93 Difference]: Finished difference Result 4050 states and 6832 transitions. [2022-01-10 13:33:06,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:06,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 13:33:06,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:06,269 INFO L225 Difference]: With dead ends: 4050 [2022-01-10 13:33:06,270 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 13:33:06,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:06,275 INFO L933 BasicCegarLoop]: 4767 mSDtfsCounter, 4759 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 4767 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:06,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 4767 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:06,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 13:33:06,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 13:33:06,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7466019417475729) internal successors, (5397), 3091 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5397 transitions. [2022-01-10 13:33:06,358 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5397 transitions. Word has length 88 [2022-01-10 13:33:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:06,359 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5397 transitions. [2022-01-10 13:33:06,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5397 transitions. [2022-01-10 13:33:06,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:33:06,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:06,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:06,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:33:06,368 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:06,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:06,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1729789386, now seen corresponding path program 1 times [2022-01-10 13:33:06,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:06,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875019078] [2022-01-10 13:33:06,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:06,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:06,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:06,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:06,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875019078] [2022-01-10 13:33:06,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875019078] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:06,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:06,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:06,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360896842] [2022-01-10 13:33:06,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:06,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:06,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:06,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:06,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:06,434 INFO L87 Difference]: Start difference. First operand 3092 states and 5397 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:06,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:06,492 INFO L93 Difference]: Finished difference Result 4049 states and 6815 transitions. [2022-01-10 13:33:06,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:06,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 13:33:06,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:06,501 INFO L225 Difference]: With dead ends: 4049 [2022-01-10 13:33:06,502 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 13:33:06,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:06,512 INFO L933 BasicCegarLoop]: 4762 mSDtfsCounter, 4753 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4753 SdHoareTripleChecker+Valid, 4762 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:06,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4753 Valid, 4762 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:06,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 13:33:06,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 13:33:06,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7440129449838189) internal successors, (5389), 3091 states have internal predecessors, (5389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:06,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5389 transitions. [2022-01-10 13:33:06,577 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5389 transitions. Word has length 88 [2022-01-10 13:33:06,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:06,578 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5389 transitions. [2022-01-10 13:33:06,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:06,579 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5389 transitions. [2022-01-10 13:33:06,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:33:06,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:06,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:06,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:33:06,580 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:06,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:06,581 INFO L85 PathProgramCache]: Analyzing trace with hash 931579990, now seen corresponding path program 1 times [2022-01-10 13:33:06,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:06,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375872843] [2022-01-10 13:33:06,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:06,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:06,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:06,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:06,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375872843] [2022-01-10 13:33:06,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375872843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:06,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:06,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:06,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725355572] [2022-01-10 13:33:06,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:06,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:06,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:06,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:06,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:06,661 INFO L87 Difference]: Start difference. First operand 3092 states and 5389 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:06,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:06,722 INFO L93 Difference]: Finished difference Result 4048 states and 6798 transitions. [2022-01-10 13:33:06,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:06,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 13:33:06,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:06,731 INFO L225 Difference]: With dead ends: 4048 [2022-01-10 13:33:06,731 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 13:33:06,735 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 13:33:06,737 INFO L933 BasicCegarLoop]: 4757 mSDtfsCounter, 4747 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 4757 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:06,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4747 Valid, 4757 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:06,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 13:33:06,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 13:33:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7414239482200646) internal successors, (5381), 3091 states have internal predecessors, (5381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:06,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5381 transitions. [2022-01-10 13:33:06,802 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5381 transitions. Word has length 88 [2022-01-10 13:33:06,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:06,803 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5381 transitions. [2022-01-10 13:33:06,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:06,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5381 transitions. [2022-01-10 13:33:06,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:33:06,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:06,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:06,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:33:06,807 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:06,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:06,808 INFO L85 PathProgramCache]: Analyzing trace with hash -90948042, now seen corresponding path program 1 times [2022-01-10 13:33:06,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:06,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731531198] [2022-01-10 13:33:06,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:06,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:06,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:06,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731531198] [2022-01-10 13:33:06,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731531198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:06,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:06,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:06,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963146689] [2022-01-10 13:33:06,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:06,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:06,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:06,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:06,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:06,871 INFO L87 Difference]: Start difference. First operand 3092 states and 5381 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:06,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:06,926 INFO L93 Difference]: Finished difference Result 4047 states and 6781 transitions. [2022-01-10 13:33:06,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:06,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 13:33:06,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:06,936 INFO L225 Difference]: With dead ends: 4047 [2022-01-10 13:33:06,936 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 13:33:06,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:06,939 INFO L933 BasicCegarLoop]: 4752 mSDtfsCounter, 4741 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4741 SdHoareTripleChecker+Valid, 4752 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:06,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4741 Valid, 4752 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:06,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 13:33:06,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 13:33:06,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7388349514563106) internal successors, (5373), 3091 states have internal predecessors, (5373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:07,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5373 transitions. [2022-01-10 13:33:07,008 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5373 transitions. Word has length 88 [2022-01-10 13:33:07,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:07,010 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5373 transitions. [2022-01-10 13:33:07,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:07,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5373 transitions. [2022-01-10 13:33:07,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:33:07,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:07,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:07,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:33:07,013 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:07,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:07,014 INFO L85 PathProgramCache]: Analyzing trace with hash -955216810, now seen corresponding path program 1 times [2022-01-10 13:33:07,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:07,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116366465] [2022-01-10 13:33:07,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:07,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:07,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:07,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116366465] [2022-01-10 13:33:07,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116366465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:07,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:07,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:07,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283829245] [2022-01-10 13:33:07,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:07,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:07,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:07,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:07,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:07,062 INFO L87 Difference]: Start difference. First operand 3092 states and 5373 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:07,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:07,121 INFO L93 Difference]: Finished difference Result 4046 states and 6764 transitions. [2022-01-10 13:33:07,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:07,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 13:33:07,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:07,131 INFO L225 Difference]: With dead ends: 4046 [2022-01-10 13:33:07,132 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 13:33:07,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:07,135 INFO L933 BasicCegarLoop]: 4747 mSDtfsCounter, 4735 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4735 SdHoareTripleChecker+Valid, 4747 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:07,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4735 Valid, 4747 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:07,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 13:33:07,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 13:33:07,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7362459546925566) internal successors, (5365), 3091 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:07,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5365 transitions. [2022-01-10 13:33:07,376 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5365 transitions. Word has length 88 [2022-01-10 13:33:07,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:07,376 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5365 transitions. [2022-01-10 13:33:07,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:07,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5365 transitions. [2022-01-10 13:33:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:33:07,377 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:07,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:07,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:33:07,378 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:07,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:07,378 INFO L85 PathProgramCache]: Analyzing trace with hash 818018870, now seen corresponding path program 1 times [2022-01-10 13:33:07,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:07,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741311574] [2022-01-10 13:33:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:07,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:07,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:07,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741311574] [2022-01-10 13:33:07,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741311574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:07,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:07,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:07,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334625417] [2022-01-10 13:33:07,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:07,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:07,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:07,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:07,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:07,413 INFO L87 Difference]: Start difference. First operand 3092 states and 5365 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:07,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:07,482 INFO L93 Difference]: Finished difference Result 4045 states and 6747 transitions. [2022-01-10 13:33:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:07,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 13:33:07,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:07,492 INFO L225 Difference]: With dead ends: 4045 [2022-01-10 13:33:07,492 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 13:33:07,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:07,495 INFO L933 BasicCegarLoop]: 4726 mSDtfsCounter, 4659 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4659 SdHoareTripleChecker+Valid, 4784 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:07,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4659 Valid, 4784 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:07,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 13:33:07,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 13:33:07,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.729126213592233) internal successors, (5343), 3091 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:07,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5343 transitions. [2022-01-10 13:33:07,550 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5343 transitions. Word has length 88 [2022-01-10 13:33:07,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:07,551 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5343 transitions. [2022-01-10 13:33:07,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:07,551 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5343 transitions. [2022-01-10 13:33:07,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:33:07,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:07,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:07,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:33:07,552 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:07,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:07,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1840794667, now seen corresponding path program 1 times [2022-01-10 13:33:07,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:07,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365897567] [2022-01-10 13:33:07,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:07,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:07,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:07,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:07,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365897567] [2022-01-10 13:33:07,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365897567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:07,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:07,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:07,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969490376] [2022-01-10 13:33:07,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:07,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:07,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:07,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:07,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:07,587 INFO L87 Difference]: Start difference. First operand 3092 states and 5343 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:07,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:07,650 INFO L93 Difference]: Finished difference Result 4044 states and 6702 transitions. [2022-01-10 13:33:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:07,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 13:33:07,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:07,659 INFO L225 Difference]: With dead ends: 4044 [2022-01-10 13:33:07,659 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 13:33:07,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:07,662 INFO L933 BasicCegarLoop]: 4713 mSDtfsCounter, 4646 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4646 SdHoareTripleChecker+Valid, 4770 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:07,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4646 Valid, 4770 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:07,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 13:33:07,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 13:33:07,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7220064724919093) internal successors, (5321), 3091 states have internal predecessors, (5321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:07,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5321 transitions. [2022-01-10 13:33:07,717 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5321 transitions. Word has length 88 [2022-01-10 13:33:07,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:07,718 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5321 transitions. [2022-01-10 13:33:07,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:07,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5321 transitions. [2022-01-10 13:33:07,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:33:07,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:07,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:07,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:33:07,719 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:07,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:07,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1824798604, now seen corresponding path program 1 times [2022-01-10 13:33:07,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:07,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50478223] [2022-01-10 13:33:07,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:07,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:07,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:07,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50478223] [2022-01-10 13:33:07,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50478223] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:07,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:07,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:07,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441015107] [2022-01-10 13:33:07,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:07,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:07,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:07,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:07,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:07,745 INFO L87 Difference]: Start difference. First operand 3092 states and 5321 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:07,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:07,809 INFO L93 Difference]: Finished difference Result 4043 states and 6657 transitions. [2022-01-10 13:33:07,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:07,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 13:33:07,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:07,815 INFO L225 Difference]: With dead ends: 4043 [2022-01-10 13:33:07,815 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 13:33:07,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:07,818 INFO L933 BasicCegarLoop]: 4700 mSDtfsCounter, 4633 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4633 SdHoareTripleChecker+Valid, 4756 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:07,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4633 Valid, 4756 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:07,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 13:33:07,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 13:33:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7148867313915857) internal successors, (5299), 3091 states have internal predecessors, (5299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:07,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5299 transitions. [2022-01-10 13:33:07,870 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5299 transitions. Word has length 88 [2022-01-10 13:33:07,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:07,870 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5299 transitions. [2022-01-10 13:33:07,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:07,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5299 transitions. [2022-01-10 13:33:07,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:33:07,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:07,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:07,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:33:07,871 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:07,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:07,872 INFO L85 PathProgramCache]: Analyzing trace with hash 607293587, now seen corresponding path program 1 times [2022-01-10 13:33:07,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:07,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944537931] [2022-01-10 13:33:07,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:07,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:07,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:07,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:07,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944537931] [2022-01-10 13:33:07,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944537931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:07,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:07,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:07,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58749938] [2022-01-10 13:33:07,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:07,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:07,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:07,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:07,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:07,900 INFO L87 Difference]: Start difference. First operand 3092 states and 5299 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:07,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:07,982 INFO L93 Difference]: Finished difference Result 4042 states and 6612 transitions. [2022-01-10 13:33:07,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:07,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 13:33:07,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:07,988 INFO L225 Difference]: With dead ends: 4042 [2022-01-10 13:33:07,989 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 13:33:07,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:07,991 INFO L933 BasicCegarLoop]: 4687 mSDtfsCounter, 4620 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4620 SdHoareTripleChecker+Valid, 4742 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:07,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4620 Valid, 4742 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:07,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 13:33:08,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 13:33:08,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7077669902912622) internal successors, (5277), 3091 states have internal predecessors, (5277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5277 transitions. [2022-01-10 13:33:08,051 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5277 transitions. Word has length 88 [2022-01-10 13:33:08,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:08,051 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5277 transitions. [2022-01-10 13:33:08,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:08,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5277 transitions. [2022-01-10 13:33:08,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:33:08,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:08,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:08,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:33:08,053 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:08,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:08,053 INFO L85 PathProgramCache]: Analyzing trace with hash -453016654, now seen corresponding path program 1 times [2022-01-10 13:33:08,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:08,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755678948] [2022-01-10 13:33:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:08,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:08,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:08,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755678948] [2022-01-10 13:33:08,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755678948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:08,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:08,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:08,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882037166] [2022-01-10 13:33:08,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:08,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:08,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:08,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:08,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:08,085 INFO L87 Difference]: Start difference. First operand 3092 states and 5277 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:08,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:08,163 INFO L93 Difference]: Finished difference Result 4040 states and 6565 transitions. [2022-01-10 13:33:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:08,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 13:33:08,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:08,169 INFO L225 Difference]: With dead ends: 4040 [2022-01-10 13:33:08,170 INFO L226 Difference]: Without dead ends: 3092 [2022-01-10 13:33:08,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:08,172 INFO L933 BasicCegarLoop]: 4674 mSDtfsCounter, 4606 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4606 SdHoareTripleChecker+Valid, 4728 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:08,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4606 Valid, 4728 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:08,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-01-10 13:33:08,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2022-01-10 13:33:08,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3090 states have (on average 1.7006472491909386) internal successors, (5255), 3091 states have internal predecessors, (5255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 5255 transitions. [2022-01-10 13:33:08,231 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 5255 transitions. Word has length 88 [2022-01-10 13:33:08,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:08,231 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 5255 transitions. [2022-01-10 13:33:08,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 5255 transitions. [2022-01-10 13:33:08,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:33:08,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:08,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:08,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:33:08,233 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:08,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:08,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1568074415, now seen corresponding path program 1 times [2022-01-10 13:33:08,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:08,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311771320] [2022-01-10 13:33:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:08,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:08,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:08,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311771320] [2022-01-10 13:33:08,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311771320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:08,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:08,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:33:08,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657330872] [2022-01-10 13:33:08,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:08,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:33:08,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:08,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:33:08,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:33:08,282 INFO L87 Difference]: Start difference. First operand 3092 states and 5255 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:08,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:08,594 INFO L93 Difference]: Finished difference Result 4550 states and 7228 transitions. [2022-01-10 13:33:08,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:33:08,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 13:33:08,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:08,600 INFO L225 Difference]: With dead ends: 4550 [2022-01-10 13:33:08,600 INFO L226 Difference]: Without dead ends: 3616 [2022-01-10 13:33:08,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:33:08,602 INFO L933 BasicCegarLoop]: 4735 mSDtfsCounter, 1905 mSDsluCounter, 13018 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 17753 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:08,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1905 Valid, 17753 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:33:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2022-01-10 13:33:08,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 3098. [2022-01-10 13:33:08,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 3096 states have (on average 1.694767441860465) internal successors, (5247), 3097 states have internal predecessors, (5247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:08,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 5247 transitions. [2022-01-10 13:33:08,676 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 5247 transitions. Word has length 88 [2022-01-10 13:33:08,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:08,676 INFO L470 AbstractCegarLoop]: Abstraction has 3098 states and 5247 transitions. [2022-01-10 13:33:08,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:08,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 5247 transitions. [2022-01-10 13:33:08,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:33:08,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:08,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:08,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:33:08,678 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:08,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:08,678 INFO L85 PathProgramCache]: Analyzing trace with hash 801359570, now seen corresponding path program 1 times [2022-01-10 13:33:08,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:08,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5928554] [2022-01-10 13:33:08,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:08,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:08,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:08,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5928554] [2022-01-10 13:33:08,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5928554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:08,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:08,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:08,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092261754] [2022-01-10 13:33:08,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:08,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:08,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:08,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:08,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:08,730 INFO L87 Difference]: Start difference. First operand 3098 states and 5247 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:08,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:08,874 INFO L93 Difference]: Finished difference Result 4814 states and 7510 transitions. [2022-01-10 13:33:08,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:08,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 13:33:08,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:08,883 INFO L225 Difference]: With dead ends: 4814 [2022-01-10 13:33:08,883 INFO L226 Difference]: Without dead ends: 3890 [2022-01-10 13:33:08,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:08,886 INFO L933 BasicCegarLoop]: 4667 mSDtfsCounter, 4544 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4544 SdHoareTripleChecker+Valid, 5268 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:08,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4544 Valid, 5268 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:08,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2022-01-10 13:33:08,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 3884. [2022-01-10 13:33:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3882 states have (on average 1.6146316331787738) internal successors, (6268), 3883 states have internal predecessors, (6268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:08,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 6268 transitions. [2022-01-10 13:33:08,997 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 6268 transitions. Word has length 88 [2022-01-10 13:33:08,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:08,998 INFO L470 AbstractCegarLoop]: Abstraction has 3884 states and 6268 transitions. [2022-01-10 13:33:08,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:08,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 6268 transitions. [2022-01-10 13:33:08,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:33:08,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:08,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:08,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:33:08,999 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:08,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:08,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1150683311, now seen corresponding path program 1 times [2022-01-10 13:33:08,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:08,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472445590] [2022-01-10 13:33:09,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:09,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:09,038 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 13:33:09,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:09,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472445590] [2022-01-10 13:33:09,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472445590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:09,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:09,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:09,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209058347] [2022-01-10 13:33:09,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:09,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:09,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:09,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:09,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:09,039 INFO L87 Difference]: Start difference. First operand 3884 states and 6268 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:09,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:09,166 INFO L93 Difference]: Finished difference Result 5625 states and 8549 transitions. [2022-01-10 13:33:09,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:09,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 13:33:09,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:09,174 INFO L225 Difference]: With dead ends: 5625 [2022-01-10 13:33:09,174 INFO L226 Difference]: Without dead ends: 3884 [2022-01-10 13:33:09,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:09,177 INFO L933 BasicCegarLoop]: 4652 mSDtfsCounter, 4537 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4537 SdHoareTripleChecker+Valid, 4704 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:09,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4537 Valid, 4704 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:09,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2022-01-10 13:33:09,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 3884. [2022-01-10 13:33:09,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3882 states have (on average 1.6076764554353427) internal successors, (6241), 3883 states have internal predecessors, (6241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:09,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 6241 transitions. [2022-01-10 13:33:09,272 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 6241 transitions. Word has length 88 [2022-01-10 13:33:09,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:09,272 INFO L470 AbstractCegarLoop]: Abstraction has 3884 states and 6241 transitions. [2022-01-10 13:33:09,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:09,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 6241 transitions. [2022-01-10 13:33:09,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 13:33:09,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:09,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:09,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 13:33:09,273 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:09,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:09,273 INFO L85 PathProgramCache]: Analyzing trace with hash 202626386, now seen corresponding path program 1 times [2022-01-10 13:33:09,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:09,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605455289] [2022-01-10 13:33:09,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:09,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:09,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:09,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:09,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605455289] [2022-01-10 13:33:09,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605455289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:09,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:09,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:33:09,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610232199] [2022-01-10 13:33:09,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:09,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:09,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:09,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:09,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:09,316 INFO L87 Difference]: Start difference. First operand 3884 states and 6241 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:09,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:09,484 INFO L93 Difference]: Finished difference Result 7264 states and 10627 transitions. [2022-01-10 13:33:09,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:09,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 13:33:09,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:09,494 INFO L225 Difference]: With dead ends: 7264 [2022-01-10 13:33:09,494 INFO L226 Difference]: Without dead ends: 5526 [2022-01-10 13:33:09,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:09,500 INFO L933 BasicCegarLoop]: 4652 mSDtfsCounter, 4553 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4553 SdHoareTripleChecker+Valid, 5243 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:09,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4553 Valid, 5243 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:09,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2022-01-10 13:33:09,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 5352. [2022-01-10 13:33:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5352 states, 5350 states have (on average 1.5183177570093458) internal successors, (8123), 5351 states have internal predecessors, (8123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:09,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5352 states to 5352 states and 8123 transitions. [2022-01-10 13:33:09,644 INFO L78 Accepts]: Start accepts. Automaton has 5352 states and 8123 transitions. Word has length 88 [2022-01-10 13:33:09,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:09,645 INFO L470 AbstractCegarLoop]: Abstraction has 5352 states and 8123 transitions. [2022-01-10 13:33:09,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:09,645 INFO L276 IsEmpty]: Start isEmpty. Operand 5352 states and 8123 transitions. [2022-01-10 13:33:09,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 13:33:09,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:09,647 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:09,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 13:33:09,648 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:09,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:09,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1976268602, now seen corresponding path program 1 times [2022-01-10 13:33:09,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:09,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296980471] [2022-01-10 13:33:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:09,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:09,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:09,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296980471] [2022-01-10 13:33:09,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296980471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:09,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:09,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:09,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676987542] [2022-01-10 13:33:09,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:09,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:09,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:09,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:09,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:09,692 INFO L87 Difference]: Start difference. First operand 5352 states and 8123 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:09,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:09,983 INFO L93 Difference]: Finished difference Result 11565 states and 16153 transitions. [2022-01-10 13:33:09,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:09,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-01-10 13:33:09,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:09,998 INFO L225 Difference]: With dead ends: 11565 [2022-01-10 13:33:09,999 INFO L226 Difference]: Without dead ends: 8365 [2022-01-10 13:33:10,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:10,005 INFO L933 BasicCegarLoop]: 4649 mSDtfsCounter, 4565 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4565 SdHoareTripleChecker+Valid, 5240 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:10,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4565 Valid, 5240 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:10,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8365 states. [2022-01-10 13:33:10,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8365 to 8079. [2022-01-10 13:33:10,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8079 states, 8077 states have (on average 1.4387767735545376) internal successors, (11621), 8078 states have internal predecessors, (11621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8079 states to 8079 states and 11621 transitions. [2022-01-10 13:33:10,283 INFO L78 Accepts]: Start accepts. Automaton has 8079 states and 11621 transitions. Word has length 142 [2022-01-10 13:33:10,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:10,283 INFO L470 AbstractCegarLoop]: Abstraction has 8079 states and 11621 transitions. [2022-01-10 13:33:10,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:10,284 INFO L276 IsEmpty]: Start isEmpty. Operand 8079 states and 11621 transitions. [2022-01-10 13:33:10,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 13:33:10,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:10,287 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:10,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 13:33:10,287 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:10,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:10,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2088036486, now seen corresponding path program 1 times [2022-01-10 13:33:10,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:10,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570736769] [2022-01-10 13:33:10,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:10,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:10,351 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:10,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:10,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570736769] [2022-01-10 13:33:10,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570736769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:10,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:10,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:10,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318825040] [2022-01-10 13:33:10,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:10,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:10,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:10,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:10,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:10,353 INFO L87 Difference]: Start difference. First operand 8079 states and 11621 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:10,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:10,865 INFO L93 Difference]: Finished difference Result 19305 states and 25921 transitions. [2022-01-10 13:33:10,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:10,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-01-10 13:33:10,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:10,893 INFO L225 Difference]: With dead ends: 19305 [2022-01-10 13:33:10,893 INFO L226 Difference]: Without dead ends: 13423 [2022-01-10 13:33:10,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:10,905 INFO L933 BasicCegarLoop]: 4950 mSDtfsCounter, 4446 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4446 SdHoareTripleChecker+Valid, 5632 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:10,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4446 Valid, 5632 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:10,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13423 states. [2022-01-10 13:33:11,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13423 to 13421. [2022-01-10 13:33:11,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13421 states, 13419 states have (on average 1.3624711230345032) internal successors, (18283), 13420 states have internal predecessors, (18283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:11,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13421 states to 13421 states and 18283 transitions. [2022-01-10 13:33:11,508 INFO L78 Accepts]: Start accepts. Automaton has 13421 states and 18283 transitions. Word has length 142 [2022-01-10 13:33:11,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:11,508 INFO L470 AbstractCegarLoop]: Abstraction has 13421 states and 18283 transitions. [2022-01-10 13:33:11,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:11,509 INFO L276 IsEmpty]: Start isEmpty. Operand 13421 states and 18283 transitions. [2022-01-10 13:33:11,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 13:33:11,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:11,535 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:11,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 13:33:11,535 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:11,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:11,536 INFO L85 PathProgramCache]: Analyzing trace with hash 268391513, now seen corresponding path program 1 times [2022-01-10 13:33:11,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:11,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682529520] [2022-01-10 13:33:11,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:11,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:33:11,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:11,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682529520] [2022-01-10 13:33:11,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682529520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:11,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:11,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:11,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424931187] [2022-01-10 13:33:11,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:11,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:11,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:11,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:11,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:11,566 INFO L87 Difference]: Start difference. First operand 13421 states and 18283 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:12,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:12,047 INFO L93 Difference]: Finished difference Result 24575 states and 32436 transitions. [2022-01-10 13:33:12,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:12,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-01-10 13:33:12,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:12,076 INFO L225 Difference]: With dead ends: 24575 [2022-01-10 13:33:12,076 INFO L226 Difference]: Without dead ends: 13351 [2022-01-10 13:33:12,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:12,089 INFO L933 BasicCegarLoop]: 4658 mSDtfsCounter, 696 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 8616 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:12,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 8616 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:12,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13351 states. [2022-01-10 13:33:12,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13351 to 13351. [2022-01-10 13:33:12,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13351 states, 13349 states have (on average 1.3633980073413738) internal successors, (18200), 13350 states have internal predecessors, (18200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:12,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13351 states to 13351 states and 18200 transitions. [2022-01-10 13:33:12,612 INFO L78 Accepts]: Start accepts. Automaton has 13351 states and 18200 transitions. Word has length 142 [2022-01-10 13:33:12,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:12,612 INFO L470 AbstractCegarLoop]: Abstraction has 13351 states and 18200 transitions. [2022-01-10 13:33:12,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:12,612 INFO L276 IsEmpty]: Start isEmpty. Operand 13351 states and 18200 transitions. [2022-01-10 13:33:12,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:33:12,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:12,617 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:12,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 13:33:12,617 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:12,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:12,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1631061953, now seen corresponding path program 1 times [2022-01-10 13:33:12,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:12,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62592436] [2022-01-10 13:33:12,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:12,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:12,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:12,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:12,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62592436] [2022-01-10 13:33:12,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62592436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:12,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:12,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:12,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15003958] [2022-01-10 13:33:12,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:12,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:12,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:12,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:12,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:12,653 INFO L87 Difference]: Start difference. First operand 13351 states and 18200 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:13,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:13,481 INFO L93 Difference]: Finished difference Result 34816 states and 45306 transitions. [2022-01-10 13:33:13,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:13,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:33:13,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:13,542 INFO L225 Difference]: With dead ends: 34816 [2022-01-10 13:33:13,542 INFO L226 Difference]: Without dead ends: 23662 [2022-01-10 13:33:13,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:13,561 INFO L933 BasicCegarLoop]: 4826 mSDtfsCounter, 4567 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4567 SdHoareTripleChecker+Valid, 5498 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:13,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4567 Valid, 5498 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:13,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23662 states. [2022-01-10 13:33:14,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23662 to 22876. [2022-01-10 13:33:14,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22876 states, 22874 states have (on average 1.3150301652531258) internal successors, (30080), 22875 states have internal predecessors, (30080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:14,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22876 states to 22876 states and 30080 transitions. [2022-01-10 13:33:14,553 INFO L78 Accepts]: Start accepts. Automaton has 22876 states and 30080 transitions. Word has length 143 [2022-01-10 13:33:14,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:14,553 INFO L470 AbstractCegarLoop]: Abstraction has 22876 states and 30080 transitions. [2022-01-10 13:33:14,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:14,553 INFO L276 IsEmpty]: Start isEmpty. Operand 22876 states and 30080 transitions. [2022-01-10 13:33:14,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:33:14,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:14,562 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:14,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 13:33:14,563 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:14,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:14,563 INFO L85 PathProgramCache]: Analyzing trace with hash 220748318, now seen corresponding path program 1 times [2022-01-10 13:33:14,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:14,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743063855] [2022-01-10 13:33:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:14,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:33:14,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:14,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743063855] [2022-01-10 13:33:14,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743063855] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:14,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:14,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:14,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695504001] [2022-01-10 13:33:14,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:14,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:14,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:14,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:14,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:14,589 INFO L87 Difference]: Start difference. First operand 22876 states and 30080 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:15,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:15,548 INFO L93 Difference]: Finished difference Result 43520 states and 56072 transitions. [2022-01-10 13:33:15,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:15,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-01-10 13:33:15,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:15,584 INFO L225 Difference]: With dead ends: 43520 [2022-01-10 13:33:15,584 INFO L226 Difference]: Without dead ends: 22807 [2022-01-10 13:33:15,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:15,614 INFO L933 BasicCegarLoop]: 4657 mSDtfsCounter, 694 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 8615 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:15,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 8615 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:15,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22807 states. [2022-01-10 13:33:16,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22807 to 22807. [2022-01-10 13:33:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22807 states, 22805 states have (on average 1.3154571365928525) internal successors, (29999), 22806 states have internal predecessors, (29999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:16,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22807 states to 22807 states and 29999 transitions. [2022-01-10 13:33:16,591 INFO L78 Accepts]: Start accepts. Automaton has 22807 states and 29999 transitions. Word has length 143 [2022-01-10 13:33:16,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:16,591 INFO L470 AbstractCegarLoop]: Abstraction has 22807 states and 29999 transitions. [2022-01-10 13:33:16,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:16,591 INFO L276 IsEmpty]: Start isEmpty. Operand 22807 states and 29999 transitions. [2022-01-10 13:33:16,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-10 13:33:16,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:16,599 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:16,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 13:33:16,599 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:16,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:16,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1026743091, now seen corresponding path program 1 times [2022-01-10 13:33:16,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:16,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769031404] [2022-01-10 13:33:16,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:16,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:16,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:16,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769031404] [2022-01-10 13:33:16,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769031404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:16,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:16,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:16,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384156479] [2022-01-10 13:33:16,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:16,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:16,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:16,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:16,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:16,639 INFO L87 Difference]: Start difference. First operand 22807 states and 29999 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:18,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:18,368 INFO L93 Difference]: Finished difference Result 62015 states and 79231 transitions. [2022-01-10 13:33:18,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:18,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-01-10 13:33:18,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:18,428 INFO L225 Difference]: With dead ends: 62015 [2022-01-10 13:33:18,428 INFO L226 Difference]: Without dead ends: 41405 [2022-01-10 13:33:18,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:18,447 INFO L933 BasicCegarLoop]: 4808 mSDtfsCounter, 4569 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 5478 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:18,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4569 Valid, 5478 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:18,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41405 states. [2022-01-10 13:33:20,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41405 to 40283. [2022-01-10 13:33:20,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40283 states, 40281 states have (on average 1.2856930066284353) internal successors, (51789), 40282 states have internal predecessors, (51789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:20,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40283 states to 40283 states and 51789 transitions. [2022-01-10 13:33:20,187 INFO L78 Accepts]: Start accepts. Automaton has 40283 states and 51789 transitions. Word has length 144 [2022-01-10 13:33:20,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:20,187 INFO L470 AbstractCegarLoop]: Abstraction has 40283 states and 51789 transitions. [2022-01-10 13:33:20,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:20,188 INFO L276 IsEmpty]: Start isEmpty. Operand 40283 states and 51789 transitions. [2022-01-10 13:33:20,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-10 13:33:20,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:20,201 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:20,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 13:33:20,201 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:20,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:20,202 INFO L85 PathProgramCache]: Analyzing trace with hash -439265938, now seen corresponding path program 1 times [2022-01-10 13:33:20,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:20,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795132444] [2022-01-10 13:33:20,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:20,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:33:20,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:20,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795132444] [2022-01-10 13:33:20,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795132444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:20,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:20,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:20,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963203106] [2022-01-10 13:33:20,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:20,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:20,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:20,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:20,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:20,226 INFO L87 Difference]: Start difference. First operand 40283 states and 51789 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:22,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:22,228 INFO L93 Difference]: Finished difference Result 78328 states and 99484 transitions. [2022-01-10 13:33:22,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:22,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2022-01-10 13:33:22,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:22,297 INFO L225 Difference]: With dead ends: 78328 [2022-01-10 13:33:22,297 INFO L226 Difference]: Without dead ends: 40215 [2022-01-10 13:33:22,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:22,324 INFO L933 BasicCegarLoop]: 4656 mSDtfsCounter, 692 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 8614 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:22,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 8614 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:22,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40215 states. [2022-01-10 13:33:24,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40215 to 40215. [2022-01-10 13:33:24,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40215 states, 40213 states have (on average 1.285902568821028) internal successors, (51710), 40214 states have internal predecessors, (51710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40215 states to 40215 states and 51710 transitions. [2022-01-10 13:33:24,158 INFO L78 Accepts]: Start accepts. Automaton has 40215 states and 51710 transitions. Word has length 144 [2022-01-10 13:33:24,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:24,159 INFO L470 AbstractCegarLoop]: Abstraction has 40215 states and 51710 transitions. [2022-01-10 13:33:24,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:24,159 INFO L276 IsEmpty]: Start isEmpty. Operand 40215 states and 51710 transitions. [2022-01-10 13:33:24,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 13:33:24,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:24,169 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:24,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 13:33:24,170 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:24,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:24,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1112968334, now seen corresponding path program 1 times [2022-01-10 13:33:24,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:24,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146521404] [2022-01-10 13:33:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:24,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:24,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:24,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146521404] [2022-01-10 13:33:24,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146521404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:24,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:24,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:24,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153539539] [2022-01-10 13:33:24,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:24,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:24,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:24,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:24,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:24,224 INFO L87 Difference]: Start difference. First operand 40215 states and 51710 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:27,483 INFO L93 Difference]: Finished difference Result 113710 states and 143692 transitions. [2022-01-10 13:33:27,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:27,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-01-10 13:33:27,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:27,599 INFO L225 Difference]: With dead ends: 113710 [2022-01-10 13:33:27,599 INFO L226 Difference]: Without dead ends: 75692 [2022-01-10 13:33:27,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:27,623 INFO L933 BasicCegarLoop]: 4802 mSDtfsCounter, 4569 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 5470 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:27,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4569 Valid, 5470 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:27,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75692 states. [2022-01-10 13:33:30,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75692 to 74986. [2022-01-10 13:33:31,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74986 states, 74984 states have (on average 1.2663234823428997) internal successors, (94954), 74985 states have internal predecessors, (94954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:31,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74986 states to 74986 states and 94954 transitions. [2022-01-10 13:33:31,138 INFO L78 Accepts]: Start accepts. Automaton has 74986 states and 94954 transitions. Word has length 145 [2022-01-10 13:33:31,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:31,139 INFO L470 AbstractCegarLoop]: Abstraction has 74986 states and 94954 transitions. [2022-01-10 13:33:31,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:31,139 INFO L276 IsEmpty]: Start isEmpty. Operand 74986 states and 94954 transitions. [2022-01-10 13:33:31,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 13:33:31,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:31,159 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:31,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 13:33:31,160 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:31,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:31,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1240525647, now seen corresponding path program 1 times [2022-01-10 13:33:31,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:31,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619690656] [2022-01-10 13:33:31,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:31,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:31,205 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:33:31,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:31,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619690656] [2022-01-10 13:33:31,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619690656] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:31,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:31,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:31,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599690650] [2022-01-10 13:33:31,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:31,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:31,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:31,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:31,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:31,209 INFO L87 Difference]: Start difference. First operand 74986 states and 94954 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:33,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:33,992 INFO L93 Difference]: Finished difference Result 130489 states and 164378 transitions. [2022-01-10 13:33:33,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:33,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-01-10 13:33:33,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:34,086 INFO L225 Difference]: With dead ends: 130489 [2022-01-10 13:33:34,086 INFO L226 Difference]: Without dead ends: 57679 [2022-01-10 13:33:34,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:34,129 INFO L933 BasicCegarLoop]: 4655 mSDtfsCounter, 690 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 8613 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:34,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 8613 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:34,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57679 states. [2022-01-10 13:33:36,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57679 to 57679. [2022-01-10 13:33:36,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57679 states, 57677 states have (on average 1.2733845380307576) internal successors, (73445), 57678 states have internal predecessors, (73445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:36,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57679 states to 57679 states and 73445 transitions. [2022-01-10 13:33:36,871 INFO L78 Accepts]: Start accepts. Automaton has 57679 states and 73445 transitions. Word has length 145 [2022-01-10 13:33:36,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:36,872 INFO L470 AbstractCegarLoop]: Abstraction has 57679 states and 73445 transitions. [2022-01-10 13:33:36,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:36,872 INFO L276 IsEmpty]: Start isEmpty. Operand 57679 states and 73445 transitions. [2022-01-10 13:33:36,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 13:33:36,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:36,884 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:36,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 13:33:36,884 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:36,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:36,885 INFO L85 PathProgramCache]: Analyzing trace with hash -15203847, now seen corresponding path program 1 times [2022-01-10 13:33:36,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:36,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062076498] [2022-01-10 13:33:36,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:36,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:36,936 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:33:36,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:36,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062076498] [2022-01-10 13:33:36,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062076498] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:36,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:36,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:36,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165673515] [2022-01-10 13:33:36,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:36,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:36,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:36,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:36,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:36,938 INFO L87 Difference]: Start difference. First operand 57679 states and 73445 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:41,546 INFO L93 Difference]: Finished difference Result 160133 states and 201217 transitions. [2022-01-10 13:33:41,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:41,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-01-10 13:33:41,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:41,729 INFO L225 Difference]: With dead ends: 160133 [2022-01-10 13:33:41,729 INFO L226 Difference]: Without dead ends: 104651 [2022-01-10 13:33:41,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:41,774 INFO L933 BasicCegarLoop]: 4803 mSDtfsCounter, 4568 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4568 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:41,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4568 Valid, 5469 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:41,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104651 states. [2022-01-10 13:33:46,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104651 to 103881. [2022-01-10 13:33:46,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103881 states, 103879 states have (on average 1.2594557128967356) internal successors, (130831), 103880 states have internal predecessors, (130831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103881 states to 103881 states and 130831 transitions. [2022-01-10 13:33:47,103 INFO L78 Accepts]: Start accepts. Automaton has 103881 states and 130831 transitions. Word has length 146 [2022-01-10 13:33:47,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:33:47,103 INFO L470 AbstractCegarLoop]: Abstraction has 103881 states and 130831 transitions. [2022-01-10 13:33:47,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:47,104 INFO L276 IsEmpty]: Start isEmpty. Operand 103881 states and 130831 transitions. [2022-01-10 13:33:47,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 13:33:47,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:33:47,128 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:33:47,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 13:33:47,128 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:33:47,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:33:47,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2118360346, now seen corresponding path program 1 times [2022-01-10 13:33:47,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:33:47,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714235556] [2022-01-10 13:33:47,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:33:47,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:33:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:33:47,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:33:47,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:33:47,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714235556] [2022-01-10 13:33:47,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714235556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:33:47,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:33:47,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:33:47,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857687009] [2022-01-10 13:33:47,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:33:47,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:33:47,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:33:47,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:33:47,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:47,157 INFO L87 Difference]: Start difference. First operand 103881 states and 130831 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:33:52,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:33:52,697 INFO L93 Difference]: Finished difference Result 205513 states and 257558 transitions. [2022-01-10 13:33:52,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:33:52,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-01-10 13:33:52,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:33:52,901 INFO L225 Difference]: With dead ends: 205513 [2022-01-10 13:33:52,901 INFO L226 Difference]: Without dead ends: 103815 [2022-01-10 13:33:52,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:33:52,968 INFO L933 BasicCegarLoop]: 4654 mSDtfsCounter, 688 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 8612 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:33:52,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 8612 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:33:53,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103815 states.