/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loops/sum_array-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 00:01:08,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 00:01:08,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 00:01:08,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 00:01:08,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 00:01:08,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 00:01:08,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 00:01:08,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 00:01:08,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 00:01:08,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 00:01:08,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 00:01:08,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 00:01:08,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 00:01:08,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 00:01:08,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 00:01:08,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 00:01:08,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 00:01:08,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 00:01:08,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 00:01:08,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 00:01:08,586 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 00:01:08,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 00:01:08,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 00:01:08,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 00:01:08,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 00:01:08,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 00:01:08,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 00:01:08,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 00:01:08,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 00:01:08,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 00:01:08,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-18 00:01:08,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 00:01:08,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 00:01:08,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 00:01:08,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 00:01:08,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 00:01:08,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 00:01:08,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 00:01:08,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 00:01:08,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 00:01:08,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 00:01:08,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 00:01:08,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 00:01:08,627 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 00:01:08,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 00:01:08,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 00:01:08,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 00:01:08,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 00:01:08,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 00:01:08,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 00:01:08,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 00:01:08,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 00:01:08,630 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 00:01:08,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 00:01:08,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 00:01:08,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 00:01:08,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 00:01:08,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 00:01:08,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 00:01:08,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 00:01:08,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 00:01:08,631 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 00:01:08,631 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 00:01:08,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 00:01:08,631 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 00:01:08,631 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 00:01:09,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 00:01:09,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 00:01:09,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 00:01:09,039 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 00:01:09,040 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 00:01:09,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-2.i [2022-03-18 00:01:09,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bfc27ea9/f9eb632c766647b5a0b52570325af224/FLAG22bdd4c6d [2022-03-18 00:01:09,561 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 00:01:09,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-2.i [2022-03-18 00:01:09,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bfc27ea9/f9eb632c766647b5a0b52570325af224/FLAG22bdd4c6d [2022-03-18 00:01:10,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bfc27ea9/f9eb632c766647b5a0b52570325af224 [2022-03-18 00:01:10,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 00:01:10,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 00:01:10,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 00:01:10,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 00:01:10,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 00:01:10,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:01:10" (1/1) ... [2022-03-18 00:01:10,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5efee569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:01:10, skipping insertion in model container [2022-03-18 00:01:10,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:01:10" (1/1) ... [2022-03-18 00:01:10,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 00:01:10,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 00:01:10,286 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-2.i[938,951] [2022-03-18 00:01:10,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 00:01:10,360 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 00:01:10,397 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-2.i[938,951] [2022-03-18 00:01:10,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 00:01:10,412 INFO L208 MainTranslator]: Completed translation [2022-03-18 00:01:10,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:01:10 WrapperNode [2022-03-18 00:01:10,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 00:01:10,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 00:01:10,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 00:01:10,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 00:01:10,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:01:10" (1/1) ... [2022-03-18 00:01:10,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:01:10" (1/1) ... [2022-03-18 00:01:10,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:01:10" (1/1) ... [2022-03-18 00:01:10,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:01:10" (1/1) ... [2022-03-18 00:01:10,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:01:10" (1/1) ... [2022-03-18 00:01:10,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:01:10" (1/1) ... [2022-03-18 00:01:10,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:01:10" (1/1) ... [2022-03-18 00:01:10,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 00:01:10,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 00:01:10,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 00:01:10,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 00:01:10,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:01:10" (1/1) ... [2022-03-18 00:01:10,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 00:01:10,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 00:01:10,536 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) [2022-03-18 00:01:10,565 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 [2022-03-18 00:01:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 00:01:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 00:01:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 00:01:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 00:01:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 00:01:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 00:01:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 00:01:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 00:01:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 00:01:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 00:01:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 00:01:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 00:01:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 00:01:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 00:01:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 00:01:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-18 00:01:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 00:01:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-18 00:01:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 00:01:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 00:01:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 00:01:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 00:01:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 00:01:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 00:01:10,662 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 00:01:10,664 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 00:01:10,872 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 00:01:10,876 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 00:01:10,876 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-18 00:01:10,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:01:10 BoogieIcfgContainer [2022-03-18 00:01:10,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 00:01:10,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 00:01:10,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 00:01:10,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 00:01:10,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 12:01:10" (1/3) ... [2022-03-18 00:01:10,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1695b876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:01:10, skipping insertion in model container [2022-03-18 00:01:10,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:01:10" (2/3) ... [2022-03-18 00:01:10,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1695b876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:01:10, skipping insertion in model container [2022-03-18 00:01:10,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:01:10" (3/3) ... [2022-03-18 00:01:10,885 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-2.i [2022-03-18 00:01:10,888 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 00:01:10,888 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 00:01:10,955 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 00:01:10,961 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2022-03-18 00:01:10,961 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 00:01:10,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 00:01:10,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-18 00:01:10,991 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:01:10,991 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:01:10,992 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:01:10,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:01:10,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1611689087, now seen corresponding path program 1 times [2022-03-18 00:01:11,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:01:11,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1333971131] [2022-03-18 00:01:11,025 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 00:01:11,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1611689087, now seen corresponding path program 2 times [2022-03-18 00:01:11,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:01:11,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218359027] [2022-03-18 00:01:11,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:01:11,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:01:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:01:11,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:01:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:01:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:01:11,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:01:11,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218359027] [2022-03-18 00:01:11,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218359027] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:01:11,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:01:11,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 00:01:11,404 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:01:11,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1333971131] [2022-03-18 00:01:11,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1333971131] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:01:11,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:01:11,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 00:01:11,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173174531] [2022-03-18 00:01:11,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:01:11,411 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 00:01:11,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:01:11,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 00:01:11,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 00:01:11,434 INFO L87 Difference]: Start difference. First operand has 32 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:01:11,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:01:11,475 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2022-03-18 00:01:11,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 00:01:11,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-03-18 00:01:11,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:01:11,486 INFO L225 Difference]: With dead ends: 55 [2022-03-18 00:01:11,486 INFO L226 Difference]: Without dead ends: 27 [2022-03-18 00:01:11,488 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 00:01:11,491 INFO L912 BasicCegarLoop]: 36 mSDtfsCounter, 28 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 00:01:11,492 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 39 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 00:01:11,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-18 00:01:11,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-18 00:01:11,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 00:01:11,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-03-18 00:01:11,521 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2022-03-18 00:01:11,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:01:11,521 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-03-18 00:01:11,522 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:01:11,522 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-03-18 00:01:11,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-18 00:01:11,523 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:01:11,523 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:01:11,523 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 00:01:11,524 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:01:11,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:01:11,525 INFO L85 PathProgramCache]: Analyzing trace with hash -717013641, now seen corresponding path program 1 times [2022-03-18 00:01:11,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:01:11,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [519150441] [2022-03-18 00:01:11,527 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 00:01:11,528 INFO L85 PathProgramCache]: Analyzing trace with hash -717013641, now seen corresponding path program 2 times [2022-03-18 00:01:11,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:01:11,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982679142] [2022-03-18 00:01:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:01:11,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:01:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:01:11,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:01:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:01:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:01:11,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:01:11,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982679142] [2022-03-18 00:01:11,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982679142] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:01:11,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:01:11,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 00:01:11,805 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:01:11,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [519150441] [2022-03-18 00:01:11,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [519150441] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:01:11,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:01:11,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 00:01:11,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432037735] [2022-03-18 00:01:11,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:01:11,806 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 00:01:11,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:01:11,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 00:01:11,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-18 00:01:11,807 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:01:12,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:01:12,003 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2022-03-18 00:01:12,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 00:01:12,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-03-18 00:01:12,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:01:12,009 INFO L225 Difference]: With dead ends: 62 [2022-03-18 00:01:12,009 INFO L226 Difference]: Without dead ends: 39 [2022-03-18 00:01:12,013 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-18 00:01:12,014 INFO L912 BasicCegarLoop]: 18 mSDtfsCounter, 53 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 00:01:12,015 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 30 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 00:01:12,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-03-18 00:01:12,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2022-03-18 00:01:12,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 00:01:12,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-03-18 00:01:12,028 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 17 [2022-03-18 00:01:12,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:01:12,028 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-03-18 00:01:12,028 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:01:12,028 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-03-18 00:01:12,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-18 00:01:12,044 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:01:12,044 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:01:12,044 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 00:01:12,044 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:01:12,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:01:12,045 INFO L85 PathProgramCache]: Analyzing trace with hash -442514949, now seen corresponding path program 1 times [2022-03-18 00:01:12,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:01:12,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1749304256] [2022-03-18 00:01:12,055 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Qvasr do not support arrays. [2022-03-18 00:01:12,055 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-18 00:01:12,055 INFO L85 PathProgramCache]: Analyzing trace with hash -442514949, now seen corresponding path program 2 times [2022-03-18 00:01:12,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:01:12,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512801252] [2022-03-18 00:01:12,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:01:12,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:01:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:01:12,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:01:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:01:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-18 00:01:12,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:01:12,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512801252] [2022-03-18 00:01:12,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512801252] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 00:01:12,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464773500] [2022-03-18 00:01:12,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 00:01:12,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 00:01:12,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 00:01:12,774 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) [2022-03-18 00:01:12,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 00:01:12,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 00:01:12,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 00:01:12,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-18 00:01:12,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 00:01:12,885 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-18 00:01:12,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-03-18 00:01:12,917 INFO L390 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 11 treesize of output 7 [2022-03-18 00:01:12,963 INFO L390 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 11 treesize of output 7 [2022-03-18 00:01:13,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2022-03-18 00:01:13,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2022-03-18 00:01:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:01:13,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 00:01:13,914 WARN L833 $PredicateComparison]: unable to prove that (forall ((|main_~#C~0.offset| Int)) (let ((.cse1 (let ((.cse2 (* (mod c_main_~i~0 4294967296) 4))) (store (select |c_#memory_int| |c_main_~#C~0.base|) (+ .cse2 |main_~#C~0.offset|) (+ (select (select |c_#memory_int| |c_main_~#B~0.base|) (+ .cse2 |c_main_~#B~0.offset|)) (select (select |c_#memory_int| |c_main_~#A~0.base|) (+ .cse2 |c_main_~#A~0.offset|))))))) (= (let ((.cse0 (store |c_#memory_int| |c_main_~#C~0.base| .cse1))) (+ (select (select .cse0 |c_main_~#B~0.base|) |c_main_~#B~0.offset|) (select (select .cse0 |c_main_~#A~0.base|) |c_main_~#A~0.offset|))) (select .cse1 |main_~#C~0.offset|)))) is different from false [2022-03-18 00:01:14,583 WARN L833 $PredicateComparison]: unable to prove that (forall ((|main_~#C~0.offset| Int)) (let ((.cse1 (+ (select (select |c_#memory_int| |c_main_~#B~0.base|) |c_main_~#B~0.offset|) (select (select |c_#memory_int| |c_main_~#A~0.base|) |c_main_~#A~0.offset|)))) (= (let ((.cse0 (store |c_#memory_int| |c_main_~#C~0.base| (store (select |c_#memory_int| |c_main_~#C~0.base|) |main_~#C~0.offset| .cse1)))) (+ (select (select .cse0 |c_main_~#A~0.base|) |c_main_~#A~0.offset|) (select (select .cse0 |c_main_~#B~0.base|) |c_main_~#B~0.offset|))) .cse1))) is different from false [2022-03-18 00:01:24,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13766 treesize of output 11942