/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/list-simple/dll2n_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:38:03,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:38:03,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:38:03,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 23:38:03,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:38:03,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:38:03,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:38:03,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:38:03,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:38:03,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:38:03,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:38:03,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:38:03,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:38:03,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:38:03,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:38:03,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:38:03,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 23:38:03,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:38:03,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:38:03,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:38:03,365 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:38:03,378 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:38:03,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:38:03,378 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:38:03,378 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:38:03,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:38:03,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:38:03,379 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:38:03,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:38:03,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:38:03,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:38:03,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:38:03,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:38:03,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:38:03,380 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:38:03,380 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:38:03,380 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:38:03,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:38:03,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:38:03,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:38:03,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:38:03,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:38:03,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:38:03,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:38:03,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:38:03,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:38:03,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:38:03,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:38:03,381 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:38:03,382 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:38:03,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:38:03,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:38:03,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:38:03,382 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:38:03,382 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:38:03,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:38:03,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:38:03,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:38:03,587 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:38:03,587 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:38:03,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_append_unequal.i [2022-01-10 23:38:03,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/918f432c6/e1d342560c134a00b0dea95ee46831ff/FLAG8a614ac05 [2022-01-10 23:38:04,018 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:38:04,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_append_unequal.i [2022-01-10 23:38:04,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/918f432c6/e1d342560c134a00b0dea95ee46831ff/FLAG8a614ac05 [2022-01-10 23:38:04,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/918f432c6/e1d342560c134a00b0dea95ee46831ff [2022-01-10 23:38:04,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:38:04,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:38:04,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:38:04,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:38:04,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:38:04,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:38:04" (1/1) ... [2022-01-10 23:38:04,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c769fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:38:04, skipping insertion in model container [2022-01-10 23:38:04,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:38:04" (1/1) ... [2022-01-10 23:38:04,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:38:04,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:38:04,361 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_append_unequal.i[24457,24470] [2022-01-10 23:38:04,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:38:04,374 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:38:04,409 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_append_unequal.i[24457,24470] [2022-01-10 23:38:04,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:38:04,431 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:38:04,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:38:04 WrapperNode [2022-01-10 23:38:04,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:38:04,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:38:04,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:38:04,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:38:04,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:38:04" (1/1) ... [2022-01-10 23:38:04,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:38:04" (1/1) ... [2022-01-10 23:38:04,490 INFO L137 Inliner]: procedures = 130, calls = 40, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 153 [2022-01-10 23:38:04,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:38:04,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:38:04,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:38:04,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:38:04,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:38:04" (1/1) ... [2022-01-10 23:38:04,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:38:04" (1/1) ... [2022-01-10 23:38:04,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:38:04" (1/1) ... [2022-01-10 23:38:04,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:38:04" (1/1) ... [2022-01-10 23:38:04,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:38:04" (1/1) ... [2022-01-10 23:38:04,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:38:04" (1/1) ... [2022-01-10 23:38:04,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:38:04" (1/1) ... [2022-01-10 23:38:04,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:38:04,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:38:04,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:38:04,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:38:04,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:38:04" (1/1) ... [2022-01-10 23:38:04,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:38:04,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:38:04,564 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 23:38:04,583 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 23:38:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 23:38:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 23:38:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:38:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 23:38:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 23:38:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 23:38:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 23:38:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 23:38:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 23:38:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:38:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:38:04,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:38:04,695 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:38:04,696 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:38:05,002 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:38:05,007 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:38:05,008 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-10 23:38:05,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:38:05 BoogieIcfgContainer [2022-01-10 23:38:05,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:38:05,010 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:38:05,011 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:38:05,012 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:38:05,014 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:38:05" (1/1) ... [2022-01-10 23:38:05,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:38:05 BasicIcfg [2022-01-10 23:38:05,129 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:38:05,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:38:05,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:38:05,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:38:05,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:38:04" (1/4) ... [2022-01-10 23:38:05,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3973e9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:38:05, skipping insertion in model container [2022-01-10 23:38:05,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:38:04" (2/4) ... [2022-01-10 23:38:05,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3973e9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:38:05, skipping insertion in model container [2022-01-10 23:38:05,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:38:05" (3/4) ... [2022-01-10 23:38:05,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3973e9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:38:05, skipping insertion in model container [2022-01-10 23:38:05,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:38:05" (4/4) ... [2022-01-10 23:38:05,142 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_append_unequal.iTransformedIcfg [2022-01-10 23:38:05,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:38:05,149 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 23:38:05,187 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:38:05,192 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 23:38:05,193 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 23:38:05,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:05,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 23:38:05,205 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:38:05,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:38:05,205 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:38:05,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:38:05,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2125320555, now seen corresponding path program 1 times [2022-01-10 23:38:05,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:38:05,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158635203] [2022-01-10 23:38:05,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:38:05,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:38:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:38:05,342 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 23:38:05,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:38:05,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158635203] [2022-01-10 23:38:05,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158635203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:38:05,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:38:05,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:38:05,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432026316] [2022-01-10 23:38:05,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:38:05,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:38:05,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:38:05,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:38:05,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:38:05,376 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 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 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:05,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:38:05,389 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2022-01-10 23:38:05,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:38:05,392 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-01-10 23:38:05,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:38:05,396 INFO L225 Difference]: With dead ends: 59 [2022-01-10 23:38:05,397 INFO L226 Difference]: Without dead ends: 27 [2022-01-10 23:38:05,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:38:05,401 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:38:05,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:38:05,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-10 23:38:05,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-10 23:38:05,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2022-01-10 23:38:05,423 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 13 [2022-01-10 23:38:05,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:38:05,424 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2022-01-10 23:38:05,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:05,425 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2022-01-10 23:38:05,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 23:38:05,426 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:38:05,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:38:05,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:38:05,427 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:38:05,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:38:05,428 INFO L85 PathProgramCache]: Analyzing trace with hash 328369196, now seen corresponding path program 1 times [2022-01-10 23:38:05,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:38:05,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590896569] [2022-01-10 23:38:05,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:38:05,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:38:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:38:05,608 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 23:38:05,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:38:05,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590896569] [2022-01-10 23:38:05,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590896569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:38:05,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:38:05,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:38:05,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674017230] [2022-01-10 23:38:05,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:38:05,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:38:05,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:38:05,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:38:05,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:38:05,611 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:05,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:38:05,623 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2022-01-10 23:38:05,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:38:05,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-01-10 23:38:05,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:38:05,625 INFO L225 Difference]: With dead ends: 52 [2022-01-10 23:38:05,625 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 23:38:05,625 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 23:38:05,626 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:38:05,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 62 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:38:05,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 23:38:05,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2022-01-10 23:38:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2022-01-10 23:38:05,630 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 13 [2022-01-10 23:38:05,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:38:05,630 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2022-01-10 23:38:05,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:05,631 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2022-01-10 23:38:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 23:38:05,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:38:05,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:38:05,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:38:05,631 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:38:05,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:38:05,632 INFO L85 PathProgramCache]: Analyzing trace with hash -796720445, now seen corresponding path program 1 times [2022-01-10 23:38:05,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:38:05,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957497773] [2022-01-10 23:38:05,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:38:05,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:38:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:38:05,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:38:05,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:38:05,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957497773] [2022-01-10 23:38:05,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957497773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:38:05,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:38:05,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:38:05,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581005114] [2022-01-10 23:38:05,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:38:05,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:38:05,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:38:05,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:38:05,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:38:05,754 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:05,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:38:05,779 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2022-01-10 23:38:05,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:38:05,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-01-10 23:38:05,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:38:05,781 INFO L225 Difference]: With dead ends: 58 [2022-01-10 23:38:05,781 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 23:38:05,783 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 23:38:05,786 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:38:05,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:38:05,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 23:38:05,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-01-10 23:38:05,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:05,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-01-10 23:38:05,796 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 19 [2022-01-10 23:38:05,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:38:05,796 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-01-10 23:38:05,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:05,796 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-01-10 23:38:05,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 23:38:05,798 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:38:05,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:38:05,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:38:05,799 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:38:05,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:38:05,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1090123452, now seen corresponding path program 1 times [2022-01-10 23:38:05,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:38:05,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641505000] [2022-01-10 23:38:05,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:38:05,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:38:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:38:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:38:06,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:38:06,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641505000] [2022-01-10 23:38:06,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641505000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:38:06,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:38:06,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 23:38:06,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314160077] [2022-01-10 23:38:06,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:38:06,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 23:38:06,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:38:06,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 23:38:06,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:38:06,196 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:06,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:38:06,558 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2022-01-10 23:38:06,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 23:38:06,558 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-01-10 23:38:06,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:38:06,559 INFO L225 Difference]: With dead ends: 58 [2022-01-10 23:38:06,559 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 23:38:06,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2022-01-10 23:38:06,560 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 120 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:38:06,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 59 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:38:06,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 23:38:06,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-01-10 23:38:06,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:06,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-01-10 23:38:06,567 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 19 [2022-01-10 23:38:06,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:38:06,567 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-01-10 23:38:06,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-01-10 23:38:06,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 23:38:06,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:38:06,568 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] [2022-01-10 23:38:06,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:38:06,568 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:38:06,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:38:06,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1950125214, now seen corresponding path program 1 times [2022-01-10 23:38:06,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:38:06,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543107753] [2022-01-10 23:38:06,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:38:06,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:38:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:38:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:38:06,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:38:06,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543107753] [2022-01-10 23:38:06,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543107753] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 23:38:06,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166629138] [2022-01-10 23:38:06,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:38:06,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 23:38:06,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:38:06,704 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 23:38:06,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 23:38:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:38:06,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 23:38:06,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 23:38:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:38:07,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 23:38:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:38:07,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166629138] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 23:38:07,226 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 23:38:07,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 23:38:07,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168678879] [2022-01-10 23:38:07,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 23:38:07,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:38:07,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:38:07,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:38:07,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:38:07,228 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:07,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:38:07,251 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2022-01-10 23:38:07,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:38:07,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 22 [2022-01-10 23:38:07,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:38:07,252 INFO L225 Difference]: With dead ends: 58 [2022-01-10 23:38:07,252 INFO L226 Difference]: Without dead ends: 39 [2022-01-10 23:38:07,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:38:07,253 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 19 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:38:07,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 115 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:38:07,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-10 23:38:07,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2022-01-10 23:38:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-01-10 23:38:07,257 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 22 [2022-01-10 23:38:07,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:38:07,257 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-01-10 23:38:07,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:07,257 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-01-10 23:38:07,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 23:38:07,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:38:07,258 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:38:07,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 23:38:07,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 23:38:07,472 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:38:07,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:38:07,472 INFO L85 PathProgramCache]: Analyzing trace with hash 658465959, now seen corresponding path program 1 times [2022-01-10 23:38:07,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:38:07,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9066061] [2022-01-10 23:38:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:38:07,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:38:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:38:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:38:08,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:38:08,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9066061] [2022-01-10 23:38:08,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9066061] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 23:38:08,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604318039] [2022-01-10 23:38:08,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:38:08,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 23:38:08,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:38:08,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 23:38:08,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 23:38:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:38:08,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 85 conjunts are in the unsatisfiable core [2022-01-10 23:38:08,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 23:38:09,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 23:38:09,381 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 23:38:09,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:38:09,504 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 30 [2022-01-10 23:38:09,757 INFO L353 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-01-10 23:38:09,759 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-01-10 23:38:09,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:38:09,909 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-10 23:38:09,909 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 54 [2022-01-10 23:38:09,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:38:09,918 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2022-01-10 23:38:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:38:10,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 23:38:10,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604318039] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:38:10,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 23:38:10,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19] total 34 [2022-01-10 23:38:10,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179615741] [2022-01-10 23:38:10,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:38:10,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 23:38:10,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:38:10,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 23:38:10,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2022-01-10 23:38:10,331 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:11,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:38:11,977 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2022-01-10 23:38:11,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 23:38:11,978 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-01-10 23:38:11,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:38:11,979 INFO L225 Difference]: With dead ends: 49 [2022-01-10 23:38:11,979 INFO L226 Difference]: Without dead ends: 38 [2022-01-10 23:38:11,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=322, Invalid=1934, Unknown=0, NotChecked=0, Total=2256 [2022-01-10 23:38:11,980 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 126 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 23:38:11,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 120 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 23:38:11,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-10 23:38:11,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-01-10 23:38:11,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:11,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-01-10 23:38:11,985 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 28 [2022-01-10 23:38:11,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:38:11,985 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-01-10 23:38:11,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:11,986 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-01-10 23:38:11,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 23:38:11,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:38:11,986 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:38:12,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 23:38:12,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-10 23:38:12,207 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:38:12,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:38:12,207 INFO L85 PathProgramCache]: Analyzing trace with hash 678288258, now seen corresponding path program 1 times [2022-01-10 23:38:12,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:38:12,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818954236] [2022-01-10 23:38:12,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:38:12,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:38:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:38:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:38:13,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:38:13,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818954236] [2022-01-10 23:38:13,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818954236] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 23:38:13,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021842265] [2022-01-10 23:38:13,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:38:13,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 23:38:13,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:38:13,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 23:38:13,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 23:38:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:38:14,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 109 conjunts are in the unsatisfiable core [2022-01-10 23:38:14,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 23:38:14,483 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 23:38:14,750 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-10 23:38:14,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 23 [2022-01-10 23:38:14,940 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 23:38:15,055 INFO L353 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2022-01-10 23:38:15,056 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 42 [2022-01-10 23:38:15,475 INFO L353 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2022-01-10 23:38:15,475 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 40 [2022-01-10 23:38:15,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:38:15,701 INFO L353 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-01-10 23:38:15,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 148 treesize of output 128 [2022-01-10 23:38:15,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:38:15,708 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 127 [2022-01-10 23:38:16,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:38:16,809 INFO L353 Elim1Store]: treesize reduction 220, result has 13.4 percent of original size [2022-01-10 23:38:16,810 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 296 treesize of output 114 [2022-01-10 23:38:16,863 INFO L353 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2022-01-10 23:38:16,864 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 351 treesize of output 214 [2022-01-10 23:38:16,887 INFO L353 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-01-10 23:38:16,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 318 treesize of output 259 [2022-01-10 23:38:16,905 INFO L353 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-01-10 23:38:16,906 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 328 treesize of output 297 [2022-01-10 23:38:17,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:38:17,080 INFO L353 Elim1Store]: treesize reduction 85, result has 12.4 percent of original size [2022-01-10 23:38:17,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 320 treesize of output 86 [2022-01-10 23:38:17,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 23:38:17,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-01-10 23:38:17,119 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:38:17,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 23:38:18,179 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_672 (Array Int Int)) (v_ArrVal_682 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.start_dll_append_~last~0#1.offsetInt_5| Int) (v_ArrVal_674 (Array Int Int)) (v_ArrVal_673 (Array Int Int))) (let ((.cse9 (store |c_#memory_$Pointer$.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt| v_ArrVal_672))) (let ((.cse7 (store |c_#memory_$Pointer$.baseInt| |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt| v_ArrVal_673)) (.cse1 (select (select .cse9 |c_ULTIMATE.start_ULTIMATE.start_dll_append_~head#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_dll_append_~head#1.offsetInt|))) (let ((.cse5 (mod (+ 4 |v_ULTIMATE.start_ULTIMATE.start_dll_append_~last~0#1.offsetInt_5|) 18446744073709551616)) (.cse8 (select (select .cse7 (select (select .cse7 |c_ULTIMATE.start_ULTIMATE.start_dll_append_~head#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_dll_append_~head#1.offsetInt|)) (mod (+ .cse1 4) 18446744073709551616)))) (let ((.cse4 (select .cse7 .cse8)) (.cse3 (select (select (store (store .cse9 .cse8 (store (select .cse9 .cse8) .cse5 |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.offsetInt|)) |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt| v_ArrVal_674) |c_ULTIMATE.start_ULTIMATE.start_main_~#s~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#s~0#1.offsetInt|))) (let ((.cse0 (select (let ((.cse6 (store (store .cse7 .cse8 (store .cse4 .cse5 |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt|)) |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt| v_ArrVal_682))) (select .cse6 (select (select .cse6 |c_ULTIMATE.start_ULTIMATE.start_main_~#s~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#s~0#1.offsetInt|))) (mod (+ .cse3 4) 18446744073709551616))) (.cse2 (select .cse4 .cse5))) (or (<= 1 .cse0) (not (<= 0 .cse0)) (not (<= 0 .cse1)) (not (<= 0 .cse2)) (not (<= 0 .cse3)) (not (<= .cse2 0))))))))) is different from false [2022-01-10 23:38:18,389 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 23:38:18,390 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59332 treesize of output 55884 [2022-01-10 23:38:18,554 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60858 treesize of output 59240 [2022-01-10 23:38:18,669 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58992 treesize of output 58512 [2022-01-10 23:38:18,836 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2022-01-10 23:38:18,836 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-10 23:38:18,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-01-10 23:38:18,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86326867] [2022-01-10 23:38:18,836 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-10 23:38:18,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-10 23:38:18,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:38:18,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-10 23:38:18,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2144, Unknown=4, NotChecked=94, Total=2450 [2022-01-10 23:38:18,839 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 23 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:24,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:38:24,704 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2022-01-10 23:38:24,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-10 23:38:24,705 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-10 23:38:24,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:38:24,705 INFO L225 Difference]: With dead ends: 57 [2022-01-10 23:38:24,705 INFO L226 Difference]: Without dead ends: 54 [2022-01-10 23:38:24,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=684, Invalid=4428, Unknown=4, NotChecked=140, Total=5256 [2022-01-10 23:38:24,707 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 309 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 23:38:24,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 164 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 23:38:24,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-10 23:38:24,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 41. [2022-01-10 23:38:24,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:24,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-01-10 23:38:24,715 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2022-01-10 23:38:24,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:38:24,715 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-01-10 23:38:24,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:38:24,715 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-01-10 23:38:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-10 23:38:24,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:38:24,715 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 23:38:24,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 23:38:24,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 23:38:24,932 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:38:24,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:38:24,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1000962022, now seen corresponding path program 1 times [2022-01-10 23:38:24,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:38:24,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098249987] [2022-01-10 23:38:24,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:38:24,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:38:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat