/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.04.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:27:24,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:27:24,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:27:24,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:27:24,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:27:24,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:27:24,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:27:24,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:27:24,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:27:24,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:27:24,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:27:24,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:27:24,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:27:24,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:27:24,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:27:24,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:27:24,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:27:24,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:27:24,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:27:24,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:27:24,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:27:24,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:27:24,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:27:24,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:27:24,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 19:27:24,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:27:24,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:27:24,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:27:24,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:27:24,136 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:27:24,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:27:24,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:27:24,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:27:24,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:27:24,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:27:24,138 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:27:24,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:27:24,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:27:24,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:27:24,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:27:24,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:27:24,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:27:24,139 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:27:24,139 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:27:24,139 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:27:24,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:27:24,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:27:24,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:27:24,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:27:24,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:27:24,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:27:24,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:27:24,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:27:24,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:27:24,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:27:24,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:27:24,141 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:27:24,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:27:24,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:27:24,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:27:24,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:27:24,142 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:27:24,142 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:27:24,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:27:24,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:27:24,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:27:24,337 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:27:24,338 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:27:24,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.04.cil-2.c [2022-01-10 19:27:24,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a90c2fbb/1e011c9c7e184baab15ea9c861704bdf/FLAG73376950c [2022-01-10 19:27:25,205 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:27:25,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.04.cil-2.c [2022-01-10 19:27:25,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a90c2fbb/1e011c9c7e184baab15ea9c861704bdf/FLAG73376950c [2022-01-10 19:27:25,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a90c2fbb/1e011c9c7e184baab15ea9c861704bdf [2022-01-10 19:27:25,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:27:25,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:27:25,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:27:25,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:27:25,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:27:25,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:27:25" (1/1) ... [2022-01-10 19:27:25,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a93ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:25, skipping insertion in model container [2022-01-10 19:27:25,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:27:25" (1/1) ... [2022-01-10 19:27:25,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:27:25,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:27:27,384 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_label43+token_ring.04.cil-2.c[381679,381692] [2022-01-10 19:27:27,413 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_label43+token_ring.04.cil-2.c[383339,383352] [2022-01-10 19:27:27,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:27:27,579 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:27:28,428 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_label43+token_ring.04.cil-2.c[381679,381692] [2022-01-10 19:27:28,432 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_label43+token_ring.04.cil-2.c[383339,383352] [2022-01-10 19:27:28,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:27:28,499 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:27:28,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:28 WrapperNode [2022-01-10 19:27:28,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:27:28,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:27:28,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:27:28,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:27:28,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:28" (1/1) ... [2022-01-10 19:27:28,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:28" (1/1) ... [2022-01-10 19:27:28,877 INFO L137 Inliner]: procedures = 53, calls = 54, calls flagged for inlining = 49, calls inlined = 88, statements flattened = 13409 [2022-01-10 19:27:28,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:27:28,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:27:28,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:27:28,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:27:28,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:28" (1/1) ... [2022-01-10 19:27:28,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:28" (1/1) ... [2022-01-10 19:27:28,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:28" (1/1) ... [2022-01-10 19:27:28,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:28" (1/1) ... [2022-01-10 19:27:29,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:28" (1/1) ... [2022-01-10 19:27:29,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:28" (1/1) ... [2022-01-10 19:27:29,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:28" (1/1) ... [2022-01-10 19:27:29,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:27:29,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:27:29,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:27:29,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:27:29,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:28" (1/1) ... [2022-01-10 19:27:29,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:27:29,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:27:29,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 19:27:29,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 19:27:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:27:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:27:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:27:29,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:27:29,639 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:27:29,640 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:27:37,448 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:27:37,476 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:27:37,476 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 19:27:37,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:27:37 BoogieIcfgContainer [2022-01-10 19:27:37,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:27:37,481 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:27:37,481 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:27:37,482 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:27:37,485 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:27:37" (1/1) ... [2022-01-10 19:27:38,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:27:38 BasicIcfg [2022-01-10 19:27:38,996 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:27:38,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:27:38,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:27:39,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:27:39,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:27:25" (1/4) ... [2022-01-10 19:27:39,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65646109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:27:39, skipping insertion in model container [2022-01-10 19:27:39,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:27:28" (2/4) ... [2022-01-10 19:27:39,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65646109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:27:39, skipping insertion in model container [2022-01-10 19:27:39,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:27:37" (3/4) ... [2022-01-10 19:27:39,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65646109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:27:39, skipping insertion in model container [2022-01-10 19:27:39,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:27:38" (4/4) ... [2022-01-10 19:27:39,005 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.04.cil-2.cTransformedIcfg [2022-01-10 19:27:39,009 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:27:39,010 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 19:27:39,066 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:27:39,073 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 19:27:39,073 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 19:27:39,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 2623 states, 2619 states have (on average 1.8163421153111874) internal successors, (4757), 2622 states have internal predecessors, (4757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:39,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:27:39,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:39,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:39,289 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:39,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:39,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1615525701, now seen corresponding path program 1 times [2022-01-10 19:27:39,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:39,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296505282] [2022-01-10 19:27:39,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:39,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:39,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:39,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296505282] [2022-01-10 19:27:39,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296505282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:39,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:39,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:27:39,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998967396] [2022-01-10 19:27:39,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:39,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:39,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:39,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:39,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:39,637 INFO L87 Difference]: Start difference. First operand has 2623 states, 2619 states have (on average 1.8163421153111874) internal successors, (4757), 2622 states have internal predecessors, (4757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:39,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:39,917 INFO L93 Difference]: Finished difference Result 5567 states and 10005 transitions. [2022-01-10 19:27:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:39,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:27:39,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:39,941 INFO L225 Difference]: With dead ends: 5567 [2022-01-10 19:27:39,941 INFO L226 Difference]: Without dead ends: 2885 [2022-01-10 19:27:39,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:39,952 INFO L933 BasicCegarLoop]: 4670 mSDtfsCounter, 4607 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4607 SdHoareTripleChecker+Valid, 5212 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:39,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4607 Valid, 5212 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:27:39,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2022-01-10 19:27:40,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2881. [2022-01-10 19:27:40,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7699791521890202) internal successors, (5094), 2880 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:40,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5094 transitions. [2022-01-10 19:27:40,113 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5094 transitions. Word has length 77 [2022-01-10 19:27:40,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:40,113 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5094 transitions. [2022-01-10 19:27:40,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:40,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5094 transitions. [2022-01-10 19:27:40,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:27:40,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:40,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:40,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:27:40,117 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:40,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:40,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1319816293, now seen corresponding path program 1 times [2022-01-10 19:27:40,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:40,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556289540] [2022-01-10 19:27:40,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:40,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:40,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:40,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:40,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556289540] [2022-01-10 19:27:40,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556289540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:40,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:40,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:27:40,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573731532] [2022-01-10 19:27:40,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:40,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:40,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:40,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:40,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:40,214 INFO L87 Difference]: Start difference. First operand 2881 states and 5094 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:40,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:40,297 INFO L93 Difference]: Finished difference Result 3629 states and 6212 transitions. [2022-01-10 19:27:40,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:40,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:27:40,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:40,310 INFO L225 Difference]: With dead ends: 3629 [2022-01-10 19:27:40,311 INFO L226 Difference]: Without dead ends: 2881 [2022-01-10 19:27:40,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:40,316 INFO L933 BasicCegarLoop]: 4597 mSDtfsCounter, 4590 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4590 SdHoareTripleChecker+Valid, 4597 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:40,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4590 Valid, 4597 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:40,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-10 19:27:40,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-10 19:27:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7671994440583738) internal successors, (5086), 2880 states have internal predecessors, (5086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:40,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5086 transitions. [2022-01-10 19:27:40,398 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5086 transitions. Word has length 77 [2022-01-10 19:27:40,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:40,399 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5086 transitions. [2022-01-10 19:27:40,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:40,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5086 transitions. [2022-01-10 19:27:40,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:27:40,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:40,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:40,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:27:40,413 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:40,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:40,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1737764027, now seen corresponding path program 1 times [2022-01-10 19:27:40,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:40,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996219831] [2022-01-10 19:27:40,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:40,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:40,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:40,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:40,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996219831] [2022-01-10 19:27:40,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996219831] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:40,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:40,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:27:40,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708030385] [2022-01-10 19:27:40,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:40,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:40,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:40,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:40,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:40,510 INFO L87 Difference]: Start difference. First operand 2881 states and 5086 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:40,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:40,571 INFO L93 Difference]: Finished difference Result 3628 states and 6195 transitions. [2022-01-10 19:27:40,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:40,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:27:40,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:40,582 INFO L225 Difference]: With dead ends: 3628 [2022-01-10 19:27:40,582 INFO L226 Difference]: Without dead ends: 2881 [2022-01-10 19:27:40,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:40,592 INFO L933 BasicCegarLoop]: 4592 mSDtfsCounter, 4584 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4584 SdHoareTripleChecker+Valid, 4592 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:40,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4584 Valid, 4592 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:40,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-10 19:27:40,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-10 19:27:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7644197359277276) internal successors, (5078), 2880 states have internal predecessors, (5078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:40,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5078 transitions. [2022-01-10 19:27:40,660 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5078 transitions. Word has length 77 [2022-01-10 19:27:40,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:40,661 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5078 transitions. [2022-01-10 19:27:40,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:40,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5078 transitions. [2022-01-10 19:27:40,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:27:40,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:40,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:40,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:27:40,664 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:40,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:40,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1627287653, now seen corresponding path program 1 times [2022-01-10 19:27:40,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:40,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077589879] [2022-01-10 19:27:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:40,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:40,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:40,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:40,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077589879] [2022-01-10 19:27:40,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077589879] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:40,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:40,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:27:40,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633910672] [2022-01-10 19:27:40,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:40,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:40,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:40,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:40,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:40,721 INFO L87 Difference]: Start difference. First operand 2881 states and 5078 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:40,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:40,791 INFO L93 Difference]: Finished difference Result 3627 states and 6178 transitions. [2022-01-10 19:27:40,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:40,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:27:40,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:40,802 INFO L225 Difference]: With dead ends: 3627 [2022-01-10 19:27:40,802 INFO L226 Difference]: Without dead ends: 2881 [2022-01-10 19:27:40,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:40,811 INFO L933 BasicCegarLoop]: 4587 mSDtfsCounter, 4578 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 4587 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:40,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4578 Valid, 4587 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:40,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-10 19:27:40,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-10 19:27:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7616400277970814) internal successors, (5070), 2880 states have internal predecessors, (5070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5070 transitions. [2022-01-10 19:27:40,876 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5070 transitions. Word has length 77 [2022-01-10 19:27:40,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:40,876 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5070 transitions. [2022-01-10 19:27:40,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:40,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5070 transitions. [2022-01-10 19:27:40,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:27:40,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:40,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:40,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:27:40,878 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:40,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:40,881 INFO L85 PathProgramCache]: Analyzing trace with hash -619466939, now seen corresponding path program 1 times [2022-01-10 19:27:40,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:40,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379691804] [2022-01-10 19:27:40,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:40,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:40,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:40,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379691804] [2022-01-10 19:27:40,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379691804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:40,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:40,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:27:40,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756766761] [2022-01-10 19:27:40,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:40,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:40,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:40,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:40,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:40,949 INFO L87 Difference]: Start difference. First operand 2881 states and 5070 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:41,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:41,020 INFO L93 Difference]: Finished difference Result 3626 states and 6161 transitions. [2022-01-10 19:27:41,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:41,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:27:41,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:41,031 INFO L225 Difference]: With dead ends: 3626 [2022-01-10 19:27:41,031 INFO L226 Difference]: Without dead ends: 2881 [2022-01-10 19:27:41,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:41,034 INFO L933 BasicCegarLoop]: 4582 mSDtfsCounter, 4572 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4572 SdHoareTripleChecker+Valid, 4582 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:41,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4572 Valid, 4582 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:41,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-10 19:27:41,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-10 19:27:41,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.758860319666435) internal successors, (5062), 2880 states have internal predecessors, (5062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:41,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5062 transitions. [2022-01-10 19:27:41,100 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5062 transitions. Word has length 77 [2022-01-10 19:27:41,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:41,103 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5062 transitions. [2022-01-10 19:27:41,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:41,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5062 transitions. [2022-01-10 19:27:41,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:27:41,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:41,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:41,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:27:41,111 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:41,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:41,111 INFO L85 PathProgramCache]: Analyzing trace with hash 2079003749, now seen corresponding path program 1 times [2022-01-10 19:27:41,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:41,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436748293] [2022-01-10 19:27:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:41,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:41,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:41,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:41,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436748293] [2022-01-10 19:27:41,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436748293] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:41,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:41,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:27:41,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091655044] [2022-01-10 19:27:41,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:41,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:41,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:41,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:41,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:41,177 INFO L87 Difference]: Start difference. First operand 2881 states and 5062 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:41,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:41,260 INFO L93 Difference]: Finished difference Result 3625 states and 6144 transitions. [2022-01-10 19:27:41,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:41,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:27:41,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:41,271 INFO L225 Difference]: With dead ends: 3625 [2022-01-10 19:27:41,271 INFO L226 Difference]: Without dead ends: 2881 [2022-01-10 19:27:41,274 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 19:27:41,275 INFO L933 BasicCegarLoop]: 4563 mSDtfsCounter, 4507 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4507 SdHoareTripleChecker+Valid, 4611 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:41,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4507 Valid, 4611 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:41,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-10 19:27:41,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-10 19:27:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7519110493398193) internal successors, (5042), 2880 states have internal predecessors, (5042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5042 transitions. [2022-01-10 19:27:41,505 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5042 transitions. Word has length 77 [2022-01-10 19:27:41,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:41,505 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5042 transitions. [2022-01-10 19:27:41,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:41,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5042 transitions. [2022-01-10 19:27:41,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:27:41,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:41,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:41,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:27:41,507 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:41,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:41,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2072894916, now seen corresponding path program 1 times [2022-01-10 19:27:41,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:41,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179953865] [2022-01-10 19:27:41,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:41,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:41,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:41,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179953865] [2022-01-10 19:27:41,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179953865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:41,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:41,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:27:41,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931961578] [2022-01-10 19:27:41,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:41,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:41,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:41,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:41,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:41,581 INFO L87 Difference]: Start difference. First operand 2881 states and 5042 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:41,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:41,669 INFO L93 Difference]: Finished difference Result 3624 states and 6103 transitions. [2022-01-10 19:27:41,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:41,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:27:41,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:41,681 INFO L225 Difference]: With dead ends: 3624 [2022-01-10 19:27:41,682 INFO L226 Difference]: Without dead ends: 2881 [2022-01-10 19:27:41,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:41,684 INFO L933 BasicCegarLoop]: 4551 mSDtfsCounter, 4495 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4495 SdHoareTripleChecker+Valid, 4598 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:41,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4495 Valid, 4598 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:41,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-10 19:27:41,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-10 19:27:41,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7449617790132037) internal successors, (5022), 2880 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:41,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5022 transitions. [2022-01-10 19:27:41,749 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5022 transitions. Word has length 77 [2022-01-10 19:27:41,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:41,750 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5022 transitions. [2022-01-10 19:27:41,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:41,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5022 transitions. [2022-01-10 19:27:41,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:27:41,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:41,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:41,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:27:41,752 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:41,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:41,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1034229597, now seen corresponding path program 1 times [2022-01-10 19:27:41,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:41,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167013002] [2022-01-10 19:27:41,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:41,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:41,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:41,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167013002] [2022-01-10 19:27:41,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167013002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:41,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:41,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:27:41,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368167625] [2022-01-10 19:27:41,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:41,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:41,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:41,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:41,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:41,790 INFO L87 Difference]: Start difference. First operand 2881 states and 5022 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:41,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:41,869 INFO L93 Difference]: Finished difference Result 3623 states and 6062 transitions. [2022-01-10 19:27:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:41,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:27:41,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:41,893 INFO L225 Difference]: With dead ends: 3623 [2022-01-10 19:27:41,893 INFO L226 Difference]: Without dead ends: 2881 [2022-01-10 19:27:41,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:41,895 INFO L933 BasicCegarLoop]: 4539 mSDtfsCounter, 4483 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4483 SdHoareTripleChecker+Valid, 4585 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:41,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4483 Valid, 4585 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:41,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-10 19:27:41,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-10 19:27:41,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7380125086865879) internal successors, (5002), 2880 states have internal predecessors, (5002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:41,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 5002 transitions. [2022-01-10 19:27:41,956 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 5002 transitions. Word has length 77 [2022-01-10 19:27:41,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:41,956 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 5002 transitions. [2022-01-10 19:27:41,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:41,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 5002 transitions. [2022-01-10 19:27:41,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:27:41,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:41,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:41,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:27:41,958 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:41,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:41,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1951502206, now seen corresponding path program 1 times [2022-01-10 19:27:41,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:41,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008453886] [2022-01-10 19:27:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:41,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:42,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:42,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008453886] [2022-01-10 19:27:42,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008453886] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:42,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:42,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:27:42,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516130431] [2022-01-10 19:27:42,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:42,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:42,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:42,004 INFO L87 Difference]: Start difference. First operand 2881 states and 5002 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:42,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:42,082 INFO L93 Difference]: Finished difference Result 3622 states and 6021 transitions. [2022-01-10 19:27:42,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:42,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:27:42,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:42,088 INFO L225 Difference]: With dead ends: 3622 [2022-01-10 19:27:42,089 INFO L226 Difference]: Without dead ends: 2881 [2022-01-10 19:27:42,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:42,092 INFO L933 BasicCegarLoop]: 4527 mSDtfsCounter, 4471 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4471 SdHoareTripleChecker+Valid, 4572 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:42,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4471 Valid, 4572 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:42,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-10 19:27:42,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-10 19:27:42,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7310632383599722) internal successors, (4982), 2880 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:42,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 4982 transitions. [2022-01-10 19:27:42,162 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 4982 transitions. Word has length 77 [2022-01-10 19:27:42,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:42,162 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 4982 transitions. [2022-01-10 19:27:42,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:42,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 4982 transitions. [2022-01-10 19:27:42,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:27:42,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:42,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:42,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:27:42,166 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:42,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:42,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1701554657, now seen corresponding path program 1 times [2022-01-10 19:27:42,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:42,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092113698] [2022-01-10 19:27:42,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:42,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:42,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:42,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092113698] [2022-01-10 19:27:42,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092113698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:42,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:42,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:27:42,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467121062] [2022-01-10 19:27:42,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:42,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:42,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:42,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:42,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:42,221 INFO L87 Difference]: Start difference. First operand 2881 states and 4982 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:42,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:42,298 INFO L93 Difference]: Finished difference Result 3621 states and 5980 transitions. [2022-01-10 19:27:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:42,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:27:42,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:42,303 INFO L225 Difference]: With dead ends: 3621 [2022-01-10 19:27:42,304 INFO L226 Difference]: Without dead ends: 2881 [2022-01-10 19:27:42,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:42,306 INFO L933 BasicCegarLoop]: 4515 mSDtfsCounter, 4459 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4459 SdHoareTripleChecker+Valid, 4559 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:42,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4459 Valid, 4559 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:42,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2022-01-10 19:27:42,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2881. [2022-01-10 19:27:42,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2878 states have (on average 1.7241139680333566) internal successors, (4962), 2880 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 4962 transitions. [2022-01-10 19:27:42,378 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 4962 transitions. Word has length 77 [2022-01-10 19:27:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:42,378 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 4962 transitions. [2022-01-10 19:27:42,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 4962 transitions. [2022-01-10 19:27:42,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:27:42,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:42,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:42,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:27:42,380 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:42,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:42,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2100056000, now seen corresponding path program 1 times [2022-01-10 19:27:42,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:42,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85433635] [2022-01-10 19:27:42,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:42,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:42,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:42,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85433635] [2022-01-10 19:27:42,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85433635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:42,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:42,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:27:42,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141043426] [2022-01-10 19:27:42,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:42,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:27:42,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:42,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:27:42,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:27:42,449 INFO L87 Difference]: Start difference. First operand 2881 states and 4962 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:42,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:42,649 INFO L93 Difference]: Finished difference Result 4069 states and 6563 transitions. [2022-01-10 19:27:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:27:42,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:27:42,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:42,657 INFO L225 Difference]: With dead ends: 4069 [2022-01-10 19:27:42,657 INFO L226 Difference]: Without dead ends: 3343 [2022-01-10 19:27:42,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:27:42,660 INFO L933 BasicCegarLoop]: 4559 mSDtfsCounter, 1465 mSDsluCounter, 12888 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 17447 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:42,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1465 Valid, 17447 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:27:42,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-10 19:27:42,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 2887. [2022-01-10 19:27:42,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2884 states have (on average 1.7184466019417475) internal successors, (4956), 2886 states have internal predecessors, (4956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:42,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 4956 transitions. [2022-01-10 19:27:42,792 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 4956 transitions. Word has length 77 [2022-01-10 19:27:42,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:42,793 INFO L470 AbstractCegarLoop]: Abstraction has 2887 states and 4956 transitions. [2022-01-10 19:27:42,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:42,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 4956 transitions. [2022-01-10 19:27:42,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 19:27:42,794 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:42,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:42,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 19:27:42,794 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:42,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:42,795 INFO L85 PathProgramCache]: Analyzing trace with hash 494170817, now seen corresponding path program 1 times [2022-01-10 19:27:42,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:42,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834036738] [2022-01-10 19:27:42,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:42,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:42,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:42,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:42,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834036738] [2022-01-10 19:27:42,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834036738] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:42,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:42,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:27:42,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901668326] [2022-01-10 19:27:42,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:42,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:42,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:42,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:42,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:42,834 INFO L87 Difference]: Start difference. First operand 2887 states and 4956 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:42,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:42,953 INFO L93 Difference]: Finished difference Result 4296 states and 6795 transitions. [2022-01-10 19:27:42,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:42,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 19:27:42,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:42,961 INFO L225 Difference]: With dead ends: 4296 [2022-01-10 19:27:42,961 INFO L226 Difference]: Without dead ends: 3552 [2022-01-10 19:27:42,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:42,964 INFO L933 BasicCegarLoop]: 4509 mSDtfsCounter, 4411 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4411 SdHoareTripleChecker+Valid, 4971 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:42,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4411 Valid, 4971 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:42,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2022-01-10 19:27:43,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3478. [2022-01-10 19:27:43,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 3475 states have (on average 1.6446043165467625) internal successors, (5715), 3477 states have internal predecessors, (5715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:43,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 5715 transitions. [2022-01-10 19:27:43,070 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 5715 transitions. Word has length 77 [2022-01-10 19:27:43,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:43,071 INFO L470 AbstractCegarLoop]: Abstraction has 3478 states and 5715 transitions. [2022-01-10 19:27:43,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:43,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 5715 transitions. [2022-01-10 19:27:43,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 19:27:43,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:43,073 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:43,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 19:27:43,073 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:43,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:43,074 INFO L85 PathProgramCache]: Analyzing trace with hash 58765366, now seen corresponding path program 1 times [2022-01-10 19:27:43,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:43,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749303928] [2022-01-10 19:27:43,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:43,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:43,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:43,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:43,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749303928] [2022-01-10 19:27:43,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749303928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:43,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:43,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:27:43,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197010459] [2022-01-10 19:27:43,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:43,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:43,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:43,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:43,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:43,127 INFO L87 Difference]: Start difference. First operand 3478 states and 5715 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:43,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:43,324 INFO L93 Difference]: Finished difference Result 6029 states and 9032 transitions. [2022-01-10 19:27:43,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:43,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 19:27:43,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:43,335 INFO L225 Difference]: With dead ends: 6029 [2022-01-10 19:27:43,335 INFO L226 Difference]: Without dead ends: 4700 [2022-01-10 19:27:43,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:43,340 INFO L933 BasicCegarLoop]: 4506 mSDtfsCounter, 4431 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4431 SdHoareTripleChecker+Valid, 4968 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:43,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4431 Valid, 4968 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:43,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4700 states. [2022-01-10 19:27:43,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4700 to 4580. [2022-01-10 19:27:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4580 states, 4577 states have (on average 1.5597552982302818) internal successors, (7139), 4579 states have internal predecessors, (7139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 7139 transitions. [2022-01-10 19:27:43,495 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 7139 transitions. Word has length 124 [2022-01-10 19:27:43,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:43,495 INFO L470 AbstractCegarLoop]: Abstraction has 4580 states and 7139 transitions. [2022-01-10 19:27:43,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:43,496 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 7139 transitions. [2022-01-10 19:27:43,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 19:27:43,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:43,499 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:43,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 19:27:43,499 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:43,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:43,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2055677962, now seen corresponding path program 1 times [2022-01-10 19:27:43,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:43,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437038592] [2022-01-10 19:27:43,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:43,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:43,570 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:43,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:43,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437038592] [2022-01-10 19:27:43,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437038592] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:43,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:43,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:27:43,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211062769] [2022-01-10 19:27:43,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:43,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:27:43,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:43,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:27:43,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:27:43,572 INFO L87 Difference]: Start difference. First operand 4580 states and 7139 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:43,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:43,934 INFO L93 Difference]: Finished difference Result 9128 states and 13113 transitions. [2022-01-10 19:27:43,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:27:43,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 19:27:43,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:43,947 INFO L225 Difference]: With dead ends: 9128 [2022-01-10 19:27:43,947 INFO L226 Difference]: Without dead ends: 6722 [2022-01-10 19:27:43,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:27:43,954 INFO L933 BasicCegarLoop]: 4492 mSDtfsCounter, 1180 mSDsluCounter, 13320 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 17812 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:43,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 17812 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:27:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6722 states. [2022-01-10 19:27:44,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6722 to 4604. [2022-01-10 19:27:44,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4604 states, 4601 states have (on average 1.5487937404911976) internal successors, (7126), 4603 states have internal predecessors, (7126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:44,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4604 states to 4604 states and 7126 transitions. [2022-01-10 19:27:44,223 INFO L78 Accepts]: Start accepts. Automaton has 4604 states and 7126 transitions. Word has length 124 [2022-01-10 19:27:44,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:44,223 INFO L470 AbstractCegarLoop]: Abstraction has 4604 states and 7126 transitions. [2022-01-10 19:27:44,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:44,223 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states and 7126 transitions. [2022-01-10 19:27:44,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 19:27:44,225 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:44,226 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:44,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 19:27:44,226 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:44,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2020890764, now seen corresponding path program 1 times [2022-01-10 19:27:44,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:44,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580950253] [2022-01-10 19:27:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:44,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:44,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:44,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580950253] [2022-01-10 19:27:44,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580950253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:44,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:44,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:27:44,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838742248] [2022-01-10 19:27:44,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:44,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:44,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:44,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:44,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:44,289 INFO L87 Difference]: Start difference. First operand 4604 states and 7126 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:44,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:44,664 INFO L93 Difference]: Finished difference Result 9245 states and 12998 transitions. [2022-01-10 19:27:44,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:44,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 19:27:44,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:44,679 INFO L225 Difference]: With dead ends: 9245 [2022-01-10 19:27:44,680 INFO L226 Difference]: Without dead ends: 6827 [2022-01-10 19:27:44,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:44,686 INFO L933 BasicCegarLoop]: 4708 mSDtfsCounter, 4328 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4328 SdHoareTripleChecker+Valid, 5239 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:44,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4328 Valid, 5239 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:44,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6827 states. [2022-01-10 19:27:45,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6827 to 6823. [2022-01-10 19:27:45,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6823 states, 6820 states have (on average 1.4475073313782991) internal successors, (9872), 6822 states have internal predecessors, (9872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6823 states to 6823 states and 9872 transitions. [2022-01-10 19:27:45,041 INFO L78 Accepts]: Start accepts. Automaton has 6823 states and 9872 transitions. Word has length 124 [2022-01-10 19:27:45,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:45,042 INFO L470 AbstractCegarLoop]: Abstraction has 6823 states and 9872 transitions. [2022-01-10 19:27:45,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:45,044 INFO L276 IsEmpty]: Start isEmpty. Operand 6823 states and 9872 transitions. [2022-01-10 19:27:45,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 19:27:45,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:45,053 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:45,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 19:27:45,053 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:45,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:45,054 INFO L85 PathProgramCache]: Analyzing trace with hash -794644973, now seen corresponding path program 1 times [2022-01-10 19:27:45,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:45,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759122252] [2022-01-10 19:27:45,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:45,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:27:45,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:45,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759122252] [2022-01-10 19:27:45,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759122252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:45,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:45,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:27:45,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26823849] [2022-01-10 19:27:45,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:45,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:45,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:45,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:45,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:45,095 INFO L87 Difference]: Start difference. First operand 6823 states and 9872 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:45,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:45,440 INFO L93 Difference]: Finished difference Result 11401 states and 15642 transitions. [2022-01-10 19:27:45,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:45,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 19:27:45,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:45,456 INFO L225 Difference]: With dead ends: 11401 [2022-01-10 19:27:45,456 INFO L226 Difference]: Without dead ends: 6764 [2022-01-10 19:27:45,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:45,466 INFO L933 BasicCegarLoop]: 4507 mSDtfsCounter, 545 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 8465 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:45,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 8465 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:45,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6764 states. [2022-01-10 19:27:45,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6764 to 6764. [2022-01-10 19:27:45,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6764 states, 6761 states have (on average 1.4499334417985505) internal successors, (9803), 6763 states have internal predecessors, (9803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:45,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6764 states to 6764 states and 9803 transitions. [2022-01-10 19:27:45,822 INFO L78 Accepts]: Start accepts. Automaton has 6764 states and 9803 transitions. Word has length 124 [2022-01-10 19:27:45,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:45,822 INFO L470 AbstractCegarLoop]: Abstraction has 6764 states and 9803 transitions. [2022-01-10 19:27:45,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:45,822 INFO L276 IsEmpty]: Start isEmpty. Operand 6764 states and 9803 transitions. [2022-01-10 19:27:45,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 19:27:45,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:45,826 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:45,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 19:27:45,826 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:45,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:45,827 INFO L85 PathProgramCache]: Analyzing trace with hash -27406120, now seen corresponding path program 1 times [2022-01-10 19:27:45,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:45,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112721913] [2022-01-10 19:27:45,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:45,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:45,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:45,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112721913] [2022-01-10 19:27:45,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112721913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:45,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:45,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:27:45,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269603369] [2022-01-10 19:27:45,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:45,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:45,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:45,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:45,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:45,875 INFO L87 Difference]: Start difference. First operand 6764 states and 9803 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:46,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:46,376 INFO L93 Difference]: Finished difference Result 15546 states and 20817 transitions. [2022-01-10 19:27:46,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:46,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 19:27:46,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:46,480 INFO L225 Difference]: With dead ends: 15546 [2022-01-10 19:27:46,480 INFO L226 Difference]: Without dead ends: 10968 [2022-01-10 19:27:46,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:46,486 INFO L933 BasicCegarLoop]: 4659 mSDtfsCounter, 4431 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4431 SdHoareTripleChecker+Valid, 5181 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:46,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4431 Valid, 5181 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:46,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10968 states. [2022-01-10 19:27:46,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10968 to 10676. [2022-01-10 19:27:46,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10676 states, 10673 states have (on average 1.3729035884943315) internal successors, (14653), 10675 states have internal predecessors, (14653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:46,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10676 states to 10676 states and 14653 transitions. [2022-01-10 19:27:46,908 INFO L78 Accepts]: Start accepts. Automaton has 10676 states and 14653 transitions. Word has length 125 [2022-01-10 19:27:46,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:46,908 INFO L470 AbstractCegarLoop]: Abstraction has 10676 states and 14653 transitions. [2022-01-10 19:27:46,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:46,908 INFO L276 IsEmpty]: Start isEmpty. Operand 10676 states and 14653 transitions. [2022-01-10 19:27:46,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 19:27:46,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:46,913 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:46,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 19:27:46,913 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:46,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:46,913 INFO L85 PathProgramCache]: Analyzing trace with hash 869508281, now seen corresponding path program 1 times [2022-01-10 19:27:46,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:46,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593611490] [2022-01-10 19:27:46,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:46,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:46,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:27:46,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:46,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593611490] [2022-01-10 19:27:46,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593611490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:46,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:46,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:27:46,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841154959] [2022-01-10 19:27:46,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:46,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:46,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:46,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:46,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:46,943 INFO L87 Difference]: Start difference. First operand 10676 states and 14653 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:47,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:47,437 INFO L93 Difference]: Finished difference Result 19134 states and 25236 transitions. [2022-01-10 19:27:47,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:47,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 19:27:47,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:47,465 INFO L225 Difference]: With dead ends: 19134 [2022-01-10 19:27:47,465 INFO L226 Difference]: Without dead ends: 10618 [2022-01-10 19:27:47,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:47,483 INFO L933 BasicCegarLoop]: 4506 mSDtfsCounter, 543 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 8464 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:47,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 8464 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:47,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10618 states. [2022-01-10 19:27:47,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10618 to 10618. [2022-01-10 19:27:47,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10618 states, 10615 states have (on average 1.3740932642487047) internal successors, (14586), 10617 states have internal predecessors, (14586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:47,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10618 states to 10618 states and 14586 transitions. [2022-01-10 19:27:47,916 INFO L78 Accepts]: Start accepts. Automaton has 10618 states and 14586 transitions. Word has length 125 [2022-01-10 19:27:47,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:47,916 INFO L470 AbstractCegarLoop]: Abstraction has 10618 states and 14586 transitions. [2022-01-10 19:27:47,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:47,917 INFO L276 IsEmpty]: Start isEmpty. Operand 10618 states and 14586 transitions. [2022-01-10 19:27:47,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 19:27:47,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:47,921 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:47,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 19:27:47,922 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:47,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:47,922 INFO L85 PathProgramCache]: Analyzing trace with hash 607188257, now seen corresponding path program 1 times [2022-01-10 19:27:47,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:47,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584962362] [2022-01-10 19:27:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:47,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:47,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:47,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584962362] [2022-01-10 19:27:47,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584962362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:47,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:47,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:27:47,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238171349] [2022-01-10 19:27:47,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:47,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:47,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:47,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:47,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:47,974 INFO L87 Difference]: Start difference. First operand 10618 states and 14586 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:48,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:48,676 INFO L93 Difference]: Finished difference Result 26523 states and 34430 transitions. [2022-01-10 19:27:48,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:48,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 19:27:48,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:48,720 INFO L225 Difference]: With dead ends: 26523 [2022-01-10 19:27:48,721 INFO L226 Difference]: Without dead ends: 18091 [2022-01-10 19:27:48,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:48,738 INFO L933 BasicCegarLoop]: 4622 mSDtfsCounter, 4377 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4377 SdHoareTripleChecker+Valid, 5142 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:48,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4377 Valid, 5142 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:48,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18091 states. [2022-01-10 19:27:49,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18091 to 17639. [2022-01-10 19:27:49,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17639 states, 17636 states have (on average 1.3196870038557496) internal successors, (23274), 17638 states have internal predecessors, (23274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:49,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17639 states to 17639 states and 23274 transitions. [2022-01-10 19:27:49,515 INFO L78 Accepts]: Start accepts. Automaton has 17639 states and 23274 transitions. Word has length 126 [2022-01-10 19:27:49,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:49,516 INFO L470 AbstractCegarLoop]: Abstraction has 17639 states and 23274 transitions. [2022-01-10 19:27:49,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:49,516 INFO L276 IsEmpty]: Start isEmpty. Operand 17639 states and 23274 transitions. [2022-01-10 19:27:49,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 19:27:49,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:49,523 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:49,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 19:27:49,524 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:49,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:49,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1678154273, now seen corresponding path program 1 times [2022-01-10 19:27:49,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:49,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589338592] [2022-01-10 19:27:49,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:49,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:27:49,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:49,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589338592] [2022-01-10 19:27:49,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589338592] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:49,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:49,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:27:49,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141755352] [2022-01-10 19:27:49,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:49,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:49,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:49,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:49,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:49,554 INFO L87 Difference]: Start difference. First operand 17639 states and 23274 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:50,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:50,249 INFO L93 Difference]: Finished difference Result 33054 states and 42472 transitions. [2022-01-10 19:27:50,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:50,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 19:27:50,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:50,280 INFO L225 Difference]: With dead ends: 33054 [2022-01-10 19:27:50,280 INFO L226 Difference]: Without dead ends: 17582 [2022-01-10 19:27:50,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:50,306 INFO L933 BasicCegarLoop]: 4505 mSDtfsCounter, 541 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 8463 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:50,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 8463 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:50,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17582 states. [2022-01-10 19:27:51,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17582 to 17582. [2022-01-10 19:27:51,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17582 states, 17579 states have (on average 1.3202685021901133) internal successors, (23209), 17581 states have internal predecessors, (23209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:51,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17582 states to 17582 states and 23209 transitions. [2022-01-10 19:27:51,219 INFO L78 Accepts]: Start accepts. Automaton has 17582 states and 23209 transitions. Word has length 126 [2022-01-10 19:27:51,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:51,219 INFO L470 AbstractCegarLoop]: Abstraction has 17582 states and 23209 transitions. [2022-01-10 19:27:51,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:51,220 INFO L276 IsEmpty]: Start isEmpty. Operand 17582 states and 23209 transitions. [2022-01-10 19:27:51,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 19:27:51,226 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:51,226 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:51,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 19:27:51,227 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:51,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:51,227 INFO L85 PathProgramCache]: Analyzing trace with hash -202766937, now seen corresponding path program 1 times [2022-01-10 19:27:51,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:51,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262038432] [2022-01-10 19:27:51,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:51,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:51,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:51,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262038432] [2022-01-10 19:27:51,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262038432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:51,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:51,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:27:51,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276604861] [2022-01-10 19:27:51,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:51,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:51,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:51,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:51,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:51,281 INFO L87 Difference]: Start difference. First operand 17582 states and 23209 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:52,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:52,579 INFO L93 Difference]: Finished difference Result 45742 states and 58267 transitions. [2022-01-10 19:27:52,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:52,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 19:27:52,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:52,622 INFO L225 Difference]: With dead ends: 45742 [2022-01-10 19:27:52,622 INFO L226 Difference]: Without dead ends: 30346 [2022-01-10 19:27:52,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:52,635 INFO L933 BasicCegarLoop]: 4601 mSDtfsCounter, 4337 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4337 SdHoareTripleChecker+Valid, 5126 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:52,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4337 Valid, 5126 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:52,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30346 states. [2022-01-10 19:27:54,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30346 to 30342. [2022-01-10 19:27:54,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30342 states, 30339 states have (on average 1.2854411813177757) internal successors, (38999), 30341 states have internal predecessors, (38999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:54,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30342 states to 30342 states and 38999 transitions. [2022-01-10 19:27:54,088 INFO L78 Accepts]: Start accepts. Automaton has 30342 states and 38999 transitions. Word has length 127 [2022-01-10 19:27:54,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:54,088 INFO L470 AbstractCegarLoop]: Abstraction has 30342 states and 38999 transitions. [2022-01-10 19:27:54,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:54,089 INFO L276 IsEmpty]: Start isEmpty. Operand 30342 states and 38999 transitions. [2022-01-10 19:27:54,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 19:27:54,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:54,098 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:54,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 19:27:54,099 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:54,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:54,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1023478854, now seen corresponding path program 1 times [2022-01-10 19:27:54,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:54,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352582767] [2022-01-10 19:27:54,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:54,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:27:54,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:54,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352582767] [2022-01-10 19:27:54,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352582767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:54,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:54,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:27:54,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364466347] [2022-01-10 19:27:54,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:54,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:54,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:54,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:54,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:54,129 INFO L87 Difference]: Start difference. First operand 30342 states and 38999 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:55,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:27:55,558 INFO L93 Difference]: Finished difference Result 58442 states and 73905 transitions. [2022-01-10 19:27:55,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:27:55,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 19:27:55,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:27:55,597 INFO L225 Difference]: With dead ends: 58442 [2022-01-10 19:27:55,598 INFO L226 Difference]: Without dead ends: 30286 [2022-01-10 19:27:55,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:55,619 INFO L933 BasicCegarLoop]: 4504 mSDtfsCounter, 539 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 8462 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:27:55,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 8462 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:27:55,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30286 states. [2022-01-10 19:27:57,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30286 to 30286. [2022-01-10 19:27:57,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30286 states, 30283 states have (on average 1.285737872733877) internal successors, (38936), 30285 states have internal predecessors, (38936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30286 states to 30286 states and 38936 transitions. [2022-01-10 19:27:57,151 INFO L78 Accepts]: Start accepts. Automaton has 30286 states and 38936 transitions. Word has length 127 [2022-01-10 19:27:57,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:27:57,152 INFO L470 AbstractCegarLoop]: Abstraction has 30286 states and 38936 transitions. [2022-01-10 19:27:57,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:27:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 30286 states and 38936 transitions. [2022-01-10 19:27:57,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 19:27:57,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:27:57,158 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:27:57,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 19:27:57,159 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:27:57,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:27:57,159 INFO L85 PathProgramCache]: Analyzing trace with hash -699479849, now seen corresponding path program 1 times [2022-01-10 19:27:57,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:27:57,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82163185] [2022-01-10 19:27:57,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:27:57,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:27:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:27:57,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:27:57,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:27:57,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82163185] [2022-01-10 19:27:57,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82163185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:27:57,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:27:57,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:27:57,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625711783] [2022-01-10 19:27:57,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:27:57,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:27:57,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:27:57,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:27:57,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:27:57,204 INFO L87 Difference]: Start difference. First operand 30286 states and 38936 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:28:00,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:28:00,053 INFO L93 Difference]: Finished difference Result 83086 states and 104172 transitions. [2022-01-10 19:28:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:28:00,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-01-10 19:28:00,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:28:00,154 INFO L225 Difference]: With dead ends: 83086 [2022-01-10 19:28:00,154 INFO L226 Difference]: Without dead ends: 54986 [2022-01-10 19:28:00,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:28:00,187 INFO L933 BasicCegarLoop]: 4958 mSDtfsCounter, 451 mSDsluCounter, 4483 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 9441 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:28:00,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 9441 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:28:00,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54986 states. [2022-01-10 19:28:02,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54986 to 54986. [2022-01-10 19:28:03,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54986 states, 54983 states have (on average 1.2504592328537911) internal successors, (68754), 54985 states have internal predecessors, (68754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:28:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54986 states to 54986 states and 68754 transitions. [2022-01-10 19:28:03,102 INFO L78 Accepts]: Start accepts. Automaton has 54986 states and 68754 transitions. Word has length 128 [2022-01-10 19:28:03,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:28:03,102 INFO L470 AbstractCegarLoop]: Abstraction has 54986 states and 68754 transitions. [2022-01-10 19:28:03,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:28:03,103 INFO L276 IsEmpty]: Start isEmpty. Operand 54986 states and 68754 transitions. [2022-01-10 19:28:03,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 19:28:03,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:28:03,131 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:28:03,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 19:28:03,131 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:28:03,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:28:03,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1736521428, now seen corresponding path program 1 times [2022-01-10 19:28:03,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:28:03,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208625991] [2022-01-10 19:28:03,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:28:03,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:28:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:28:03,186 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:28:03,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:28:03,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208625991] [2022-01-10 19:28:03,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208625991] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:28:03,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:28:03,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:28:03,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530003047] [2022-01-10 19:28:03,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:28:03,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:28:03,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:28:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:28:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:28:03,190 INFO L87 Difference]: Start difference. First operand 54986 states and 68754 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:28:07,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:28:07,432 INFO L93 Difference]: Finished difference Result 131344 states and 162280 transitions. [2022-01-10 19:28:07,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:28:07,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2022-01-10 19:28:07,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:28:07,562 INFO L225 Difference]: With dead ends: 131344 [2022-01-10 19:28:07,563 INFO L226 Difference]: Without dead ends: 78556 [2022-01-10 19:28:07,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:28:07,605 INFO L933 BasicCegarLoop]: 4495 mSDtfsCounter, 4314 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4314 SdHoareTripleChecker+Valid, 4951 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:28:07,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4314 Valid, 4951 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:28:07,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78556 states. [2022-01-10 19:28:11,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78556 to 78296. [2022-01-10 19:28:11,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78296 states, 78293 states have (on average 1.2363557406153807) internal successors, (96798), 78295 states have internal predecessors, (96798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:28:11,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78296 states to 78296 states and 96798 transitions. [2022-01-10 19:28:11,904 INFO L78 Accepts]: Start accepts. Automaton has 78296 states and 96798 transitions. Word has length 165 [2022-01-10 19:28:11,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:28:11,904 INFO L470 AbstractCegarLoop]: Abstraction has 78296 states and 96798 transitions. [2022-01-10 19:28:11,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:28:11,905 INFO L276 IsEmpty]: Start isEmpty. Operand 78296 states and 96798 transitions. [2022-01-10 19:28:11,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 19:28:11,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:28:11,947 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:28:11,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 19:28:11,948 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:28:11,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:28:11,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1353634147, now seen corresponding path program 1 times [2022-01-10 19:28:11,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:28:11,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118143371] [2022-01-10 19:28:11,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:28:11,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:28:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:28:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:28:11,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:28:11,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118143371] [2022-01-10 19:28:11,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118143371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:28:11,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:28:11,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:28:11,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955271991] [2022-01-10 19:28:11,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:28:11,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:28:11,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:28:11,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:28:11,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:28:11,999 INFO L87 Difference]: Start difference. First operand 78296 states and 96798 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:28:17,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:28:17,563 INFO L93 Difference]: Finished difference Result 188440 states and 231082 transitions. [2022-01-10 19:28:17,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:28:17,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2022-01-10 19:28:17,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:28:17,908 INFO L225 Difference]: With dead ends: 188440 [2022-01-10 19:28:17,908 INFO L226 Difference]: Without dead ends: 112354 [2022-01-10 19:28:17,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:28:17,979 INFO L933 BasicCegarLoop]: 4493 mSDtfsCounter, 4316 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 4949 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:28:17,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4316 Valid, 4949 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:28:18,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112354 states.