/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-acceleration/phases_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 08:18:08,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 08:18:08,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 08:18:08,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 08:18:08,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 08:18:08,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 08:18:08,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 08:18:08,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 08:18:08,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 08:18:08,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 08:18:08,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 08:18:08,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 08:18:08,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 08:18:08,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 08:18:08,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 08:18:08,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 08:18:08,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 08:18:08,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 08:18:08,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 08:18:08,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 08:18:08,538 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 08:18:08,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 08:18:08,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 08:18:08,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 08:18:08,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 08:18:08,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 08:18:08,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 08:18:08,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 08:18:08,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 08:18:08,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 08:18:08,602 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 08:18:08,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 08:18:08,603 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 08:18:08,606 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 08:18:08,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 08:18:08,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 08:18:08,607 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 08:18:08,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 08:18:08,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 08:18:08,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 08:18:08,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 08:18:08,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 08:18:08,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 08:18:08,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 08:18:08,608 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 08:18:08,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 08:18:08,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 08:18:08,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 08:18:08,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 08:18:08,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:18:08,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 08:18:08,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 08:18:08,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 08:18:08,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 08:18:08,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 08:18:08,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 08:18:08,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 08:18:08,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 08:18:08,610 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 08:18:08,610 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 08:18:08,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 08:18:08,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 08:18:08,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 08:18:08,873 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 08:18:08,873 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 08:18:08,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2022-03-20 08:18:08,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46cccc33e/bfc09689fa2b4b949621aaca1a52e611/FLAGf3e2fe0dd [2022-03-20 08:18:09,393 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 08:18:09,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2022-03-20 08:18:09,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46cccc33e/bfc09689fa2b4b949621aaca1a52e611/FLAGf3e2fe0dd [2022-03-20 08:18:09,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46cccc33e/bfc09689fa2b4b949621aaca1a52e611 [2022-03-20 08:18:09,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 08:18:09,409 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 08:18:09,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 08:18:09,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 08:18:09,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 08:18:09,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:18:09" (1/1) ... [2022-03-20 08:18:09,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3410c086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:09, skipping insertion in model container [2022-03-20 08:18:09,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:18:09" (1/1) ... [2022-03-20 08:18:09,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 08:18:09,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 08:18:09,637 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-2.c[459,472] [2022-03-20 08:18:09,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:18:09,656 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 08:18:09,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-2.c[459,472] [2022-03-20 08:18:09,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:18:09,680 INFO L208 MainTranslator]: Completed translation [2022-03-20 08:18:09,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:09 WrapperNode [2022-03-20 08:18:09,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 08:18:09,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 08:18:09,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 08:18:09,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 08:18:09,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:09" (1/1) ... [2022-03-20 08:18:09,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:09" (1/1) ... [2022-03-20 08:18:09,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:09" (1/1) ... [2022-03-20 08:18:09,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:09" (1/1) ... [2022-03-20 08:18:09,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:09" (1/1) ... [2022-03-20 08:18:09,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:09" (1/1) ... [2022-03-20 08:18:09,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:09" (1/1) ... [2022-03-20 08:18:09,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 08:18:09,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 08:18:09,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 08:18:09,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 08:18:09,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:09" (1/1) ... [2022-03-20 08:18:09,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:18:09,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:18:09,732 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) [2022-03-20 08:18:09,767 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 [2022-03-20 08:18:09,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 08:18:09,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 08:18:09,778 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 08:18:09,778 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 08:18:09,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 08:18:09,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 08:18:09,779 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 08:18:09,779 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 08:18:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 08:18:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 08:18:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 08:18:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-20 08:18:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 08:18:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 08:18:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 08:18:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 08:18:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 08:18:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 08:18:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 08:18:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 08:18:09,826 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 08:18:09,827 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 08:18:09,938 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 08:18:09,944 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 08:18:09,944 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 08:18:09,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:18:09 BoogieIcfgContainer [2022-03-20 08:18:09,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 08:18:09,947 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 08:18:09,947 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 08:18:09,948 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 08:18:09,951 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:18:09" (1/1) ... [2022-03-20 08:18:09,953 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 08:18:09,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:18:09 BasicIcfg [2022-03-20 08:18:09,966 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 08:18:09,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 08:18:09,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 08:18:09,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 08:18:09,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 08:18:09" (1/4) ... [2022-03-20 08:18:09,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17bfee73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:18:09, skipping insertion in model container [2022-03-20 08:18:09,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:09" (2/4) ... [2022-03-20 08:18:09,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17bfee73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:18:09, skipping insertion in model container [2022-03-20 08:18:09,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:18:09" (3/4) ... [2022-03-20 08:18:09,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17bfee73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:18:09, skipping insertion in model container [2022-03-20 08:18:09,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:18:09" (4/4) ... [2022-03-20 08:18:09,973 INFO L111 eAbstractionObserver]: Analyzing ICFG phases_2-2.cqvasr [2022-03-20 08:18:09,978 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 08:18:09,979 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 08:18:10,023 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 08:18:10,036 INFO L340 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=FINITE_AUTOMATA, 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 [2022-03-20 08:18:10,048 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 08:18:10,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 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) [2022-03-20 08:18:10,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-20 08:18:10,077 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:18:10,078 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:18:10,078 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:18:10,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:18:10,085 INFO L85 PathProgramCache]: Analyzing trace with hash -515753987, now seen corresponding path program 1 times [2022-03-20 08:18:10,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:18:10,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484512504] [2022-03-20 08:18:10,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:18:10,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:18:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:10,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:18:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:18:10,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:18:10,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484512504] [2022-03-20 08:18:10,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484512504] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:18:10,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:18:10,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 08:18:10,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010347163] [2022-03-20 08:18:10,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:18:10,225 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 08:18:10,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:18:10,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 08:18:10,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 08:18:10,260 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 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 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-03-20 08:18:10,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:18:10,289 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-03-20 08:18:10,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 08:18:10,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 12 [2022-03-20 08:18:10,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:18:10,302 INFO L225 Difference]: With dead ends: 31 [2022-03-20 08:18:10,302 INFO L226 Difference]: Without dead ends: 14 [2022-03-20 08:18:10,304 INFO L912 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 [2022-03-20 08:18:10,306 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 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 [2022-03-20 08:18:10,307 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:18:10,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-03-20 08:18:10,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-03-20 08:18:10,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 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) [2022-03-20 08:18:10,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-03-20 08:18:10,342 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2022-03-20 08:18:10,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:18:10,343 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-03-20 08:18:10,343 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-03-20 08:18:10,344 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-03-20 08:18:10,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-20 08:18:10,344 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:18:10,344 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:18:10,345 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 08:18:10,345 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:18:10,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:18:10,348 INFO L85 PathProgramCache]: Analyzing trace with hash -514830466, now seen corresponding path program 1 times [2022-03-20 08:18:10,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:18:10,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906620431] [2022-03-20 08:18:10,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:18:10,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:18:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:10,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:18:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:18:10,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:18:10,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906620431] [2022-03-20 08:18:10,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906620431] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:18:10,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:18:10,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 08:18:10,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315568527] [2022-03-20 08:18:10,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:18:10,563 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 08:18:10,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:18:10,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 08:18:10,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-20 08:18:10,564 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-03-20 08:18:10,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:18:10,643 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-03-20 08:18:10,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 08:18:10,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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 12 [2022-03-20 08:18:10,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:18:10,645 INFO L225 Difference]: With dead ends: 21 [2022-03-20 08:18:10,645 INFO L226 Difference]: Without dead ends: 16 [2022-03-20 08:18:10,646 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-20 08:18:10,647 INFO L913 BasicCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:18:10,647 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 32 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:18:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-03-20 08:18:10,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-03-20 08:18:10,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 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) [2022-03-20 08:18:10,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-03-20 08:18:10,651 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2022-03-20 08:18:10,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:18:10,651 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-03-20 08:18:10,651 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-03-20 08:18:10,652 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-03-20 08:18:10,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-20 08:18:10,652 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:18:10,652 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:18:10,652 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 08:18:10,652 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:18:10,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:18:10,653 INFO L85 PathProgramCache]: Analyzing trace with hash 109185883, now seen corresponding path program 1 times [2022-03-20 08:18:10,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:18:10,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641958822] [2022-03-20 08:18:10,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:18:10,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:18:10,660 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 08:18:10,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639635768] [2022-03-20 08:18:10,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:18:10,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:18:10,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:18:10,663 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) [2022-03-20 08:18:10,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 08:18:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:10,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 08:18:10,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:18:10,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:18:10,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:18:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:18:11,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:18:11,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641958822] [2022-03-20 08:18:11,031 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 08:18:11,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639635768] [2022-03-20 08:18:11,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639635768] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 08:18:11,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 08:18:11,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2022-03-20 08:18:11,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656279260] [2022-03-20 08:18:11,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:18:11,032 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 08:18:11,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:18:11,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 08:18:11,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-20 08:18:11,033 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:18:21,599 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 08:18:30,725 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 9.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 08:18:30,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:18:30,753 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-03-20 08:18:30,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 08:18:30,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 2 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 14 [2022-03-20 08:18:30,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:18:30,754 INFO L225 Difference]: With dead ends: 22 [2022-03-20 08:18:30,754 INFO L226 Difference]: Without dead ends: 17 [2022-03-20 08:18:30,755 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-03-20 08:18:30,755 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2022-03-20 08:18:30,756 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 55 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 2 Unknown, 0 Unchecked, 19.7s Time] [2022-03-20 08:18:30,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-03-20 08:18:30,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-03-20 08:18:30,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 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) [2022-03-20 08:18:30,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-03-20 08:18:30,759 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2022-03-20 08:18:30,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:18:30,759 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-03-20 08:18:30,759 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:18:30,759 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-03-20 08:18:30,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-20 08:18:30,759 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:18:30,759 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:18:30,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 08:18:30,967 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:18:30,967 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:18:30,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:18:30,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1535153319, now seen corresponding path program 1 times [2022-03-20 08:18:30,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:18:30,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479978573] [2022-03-20 08:18:30,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:18:30,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:18:30,975 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 08:18:30,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115288015] [2022-03-20 08:18:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:18:30,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:18:30,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:18:30,976 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) [2022-03-20 08:18:30,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 08:18:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:31,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-20 08:18:31,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:18:31,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 08:18:31,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 08:18:31,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:18:31,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479978573] [2022-03-20 08:18:31,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 08:18:31,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115288015] [2022-03-20 08:18:31,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115288015] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:18:31,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:18:31,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 08:18:31,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825484982] [2022-03-20 08:18:31,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:18:31,067 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 08:18:31,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:18:31,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 08:18:31,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-20 08:18:31,068 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:18:31,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:18:31,075 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-03-20 08:18:31,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 08:18:31,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 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 16 [2022-03-20 08:18:31,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:18:31,076 INFO L225 Difference]: With dead ends: 18 [2022-03-20 08:18:31,076 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 08:18:31,076 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-20 08:18:31,077 INFO L913 BasicCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:18:31,077 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 17 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:18:31,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 08:18:31,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 08:18:31,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-20 08:18:31,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 08:18:31,078 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-03-20 08:18:31,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:18:31,078 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 08:18:31,078 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:18:31,079 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 08:18:31,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 08:18:31,080 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 08:18:31,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 08:18:31,297 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-20 08:18:31,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 08:18:31,330 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 08:18:31,333 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-20 08:18:31,333 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-20 08:18:31,333 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 08:18:31,333 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 08:18:31,333 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-20 08:18:31,333 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-20 08:18:31,333 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 17 32) the Hoare annotation is: true [2022-03-20 08:18:31,333 INFO L882 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2022-03-20 08:18:31,333 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 17 32) no Hoare annotation was computed. [2022-03-20 08:18:31,333 INFO L878 garLoopResultBuilder]: At program point L24-2(lines 23 29) the Hoare annotation is: (and (= main_~x~0 1) (<= (+ (* (div main_~y~0 4294967296) 4294967296) 1) main_~y~0)) [2022-03-20 08:18:31,333 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 17 32) no Hoare annotation was computed. [2022-03-20 08:18:31,333 INFO L878 garLoopResultBuilder]: At program point L23-2(lines 23 29) the Hoare annotation is: (= (mod main_~x~0 4294967296) (mod main_~y~0 4294967296)) [2022-03-20 08:18:31,334 INFO L882 garLoopResultBuilder]: For program point L24(lines 24 28) no Hoare annotation was computed. [2022-03-20 08:18:31,334 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 15) the Hoare annotation is: true [2022-03-20 08:18:31,334 INFO L882 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2022-03-20 08:18:31,334 INFO L882 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-03-20 08:18:31,334 INFO L882 garLoopResultBuilder]: For program point L11-2(lines 10 15) no Hoare annotation was computed. [2022-03-20 08:18:31,334 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-03-20 08:18:31,334 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 15) no Hoare annotation was computed. [2022-03-20 08:18:31,336 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-03-20 08:18:31,337 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 08:18:31,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:18:31 BasicIcfg [2022-03-20 08:18:31,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 08:18:31,353 INFO L158 Benchmark]: Toolchain (without parser) took 21940.34ms. Allocated memory was 230.7MB in the beginning and 320.9MB in the end (delta: 90.2MB). Free memory was 176.6MB in the beginning and 244.3MB in the end (delta: -67.6MB). Peak memory consumption was 22.1MB. Max. memory is 8.0GB. [2022-03-20 08:18:31,354 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 230.7MB. Free memory is still 192.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 08:18:31,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.95ms. Allocated memory was 230.7MB in the beginning and 320.9MB in the end (delta: 90.2MB). Free memory was 176.4MB in the beginning and 294.1MB in the end (delta: -117.8MB). Peak memory consumption was 7.6MB. Max. memory is 8.0GB. [2022-03-20 08:18:31,354 INFO L158 Benchmark]: Boogie Preprocessor took 25.98ms. Allocated memory is still 320.9MB. Free memory was 294.1MB in the beginning and 292.9MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 08:18:31,355 INFO L158 Benchmark]: RCFGBuilder took 235.92ms. Allocated memory is still 320.9MB. Free memory was 292.9MB in the beginning and 282.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 08:18:31,355 INFO L158 Benchmark]: IcfgTransformer took 19.31ms. Allocated memory is still 320.9MB. Free memory was 282.4MB in the beginning and 280.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 08:18:31,355 INFO L158 Benchmark]: TraceAbstraction took 21381.04ms. Allocated memory is still 320.9MB. Free memory was 280.5MB in the beginning and 244.3MB in the end (delta: 36.2MB). Peak memory consumption was 37.6MB. Max. memory is 8.0GB. [2022-03-20 08:18:31,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 230.7MB. Free memory is still 192.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 268.95ms. Allocated memory was 230.7MB in the beginning and 320.9MB in the end (delta: 90.2MB). Free memory was 176.4MB in the beginning and 294.1MB in the end (delta: -117.8MB). Peak memory consumption was 7.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.98ms. Allocated memory is still 320.9MB. Free memory was 294.1MB in the beginning and 292.9MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 235.92ms. Allocated memory is still 320.9MB. Free memory was 292.9MB in the beginning and 282.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 19.31ms. Allocated memory is still 320.9MB. Free memory was 282.4MB in the beginning and 280.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 21381.04ms. Allocated memory is still 320.9MB. Free memory was 280.5MB in the beginning and 244.3MB in the end (delta: 36.2MB). Peak memory consumption was 37.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 21.3s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 19.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 19.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 128 SdHoareTripleChecker+Invalid, 19.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 79 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 88 IncrementalHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 49 mSDtfsCounter, 88 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 31 HoareAnnotationTreeSize, 10 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 50 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 236 SizeOfPredicates, 2 NumberOfNonLiveVariables, 120 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 5/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: x == 1 && y / 4294967296 * 4294967296 + 1 <= y RESULT: Ultimate proved your program to be correct! [2022-03-20 08:18:31,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...