/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/multivar_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 08:18:00,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 08:18:00,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 08:18:00,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 08:18:00,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 08:18:00,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 08:18:00,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 08:18:00,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 08:18:00,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 08:18:00,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 08:18:00,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 08:18:00,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 08:18:00,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 08:18:00,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 08:18:00,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 08:18:00,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 08:18:00,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 08:18:00,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 08:18:00,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 08:18:00,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 08:18:00,184 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 08:18:00,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 08:18:00,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 08:18:00,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 08:18:00,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 08:18:00,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 08:18:00,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 08:18:00,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 08:18:00,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 08:18:00,206 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 08:18:00,233 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 08:18:00,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 08:18:00,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 08:18:00,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 08:18:00,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 08:18:00,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 08:18:00,238 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 08:18:00,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 08:18:00,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 08:18:00,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 08:18:00,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 08:18:00,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 08:18:00,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 08:18:00,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 08:18:00,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 08:18:00,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 08:18:00,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 08:18:00,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 08:18:00,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 08:18:00,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:18:00,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 08:18:00,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 08:18:00,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 08:18:00,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 08:18:00,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 08:18:00,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 08:18:00,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 08:18:00,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 08:18:00,243 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 08:18:00,243 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 08:18:00,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 08:18:00,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 08:18:00,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 08:18:00,511 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 08:18:00,515 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 08:18:00,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_1-2.c [2022-03-20 08:18:00,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8de30a854/f89abd6dbdc54c4d9f8a4ea823bc7393/FLAG2e02a8c7b [2022-03-20 08:18:00,983 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 08:18:00,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/multivar_1-2.c [2022-03-20 08:18:00,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8de30a854/f89abd6dbdc54c4d9f8a4ea823bc7393/FLAG2e02a8c7b [2022-03-20 08:18:01,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8de30a854/f89abd6dbdc54c4d9f8a4ea823bc7393 [2022-03-20 08:18:01,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 08:18:01,402 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 08:18:01,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 08:18:01,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 08:18:01,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 08:18:01,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:18:01" (1/1) ... [2022-03-20 08:18:01,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671b63ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:01, skipping insertion in model container [2022-03-20 08:18:01,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:18:01" (1/1) ... [2022-03-20 08:18:01,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 08:18:01,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 08:18:01,567 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/multivar_1-2.c[374,387] [2022-03-20 08:18:01,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:18:01,585 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 08:18:01,600 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/multivar_1-2.c[374,387] [2022-03-20 08:18:01,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:18:01,625 INFO L208 MainTranslator]: Completed translation [2022-03-20 08:18:01,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:01 WrapperNode [2022-03-20 08:18:01,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 08:18:01,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 08:18:01,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 08:18:01,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 08:18:01,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:01" (1/1) ... [2022-03-20 08:18:01,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:01" (1/1) ... [2022-03-20 08:18:01,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:01" (1/1) ... [2022-03-20 08:18:01,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:01" (1/1) ... [2022-03-20 08:18:01,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:01" (1/1) ... [2022-03-20 08:18:01,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:01" (1/1) ... [2022-03-20 08:18:01,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:01" (1/1) ... [2022-03-20 08:18:01,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 08:18:01,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 08:18:01,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 08:18:01,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 08:18:01,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:01" (1/1) ... [2022-03-20 08:18:01,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:18:01,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:18:01,697 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 08:18:01,717 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 08:18:01,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 08:18:01,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 08:18:01,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 08:18:01,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 08:18:01,738 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 08:18:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 08:18:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 08:18:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 08:18:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 08:18:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-20 08:18:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 08:18:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 08:18:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 08:18:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 08:18:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 08:18:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 08:18:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 08:18:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 08:18:01,796 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 08:18:01,797 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 08:18:01,877 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 08:18:01,882 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 08:18:01,882 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 08:18:01,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:18:01 BoogieIcfgContainer [2022-03-20 08:18:01,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 08:18:01,885 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 08:18:01,885 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 08:18:01,886 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 08:18:01,894 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:18:01" (1/1) ... [2022-03-20 08:18:01,896 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 08:18:02,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:18:02 BasicIcfg [2022-03-20 08:18:02,311 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 08:18:02,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 08:18:02,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 08:18:02,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 08:18:02,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 08:18:01" (1/4) ... [2022-03-20 08:18:02,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387a72f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:18:02, skipping insertion in model container [2022-03-20 08:18:02,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:18:01" (2/4) ... [2022-03-20 08:18:02,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387a72f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:18:02, skipping insertion in model container [2022-03-20 08:18:02,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:18:01" (3/4) ... [2022-03-20 08:18:02,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387a72f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:18:02, skipping insertion in model container [2022-03-20 08:18:02,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:18:02" (4/4) ... [2022-03-20 08:18:02,324 INFO L111 eAbstractionObserver]: Analyzing ICFG multivar_1-2.cqvasr [2022-03-20 08:18:02,329 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 08:18:02,330 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 08:18:02,367 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 08:18:02,374 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 08:18:02,374 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 08:18:02,388 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 08:18:02,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 08:18:02,391 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:18:02,392 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:18:02,392 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:18:02,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:18:02,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1690616289, now seen corresponding path program 1 times [2022-03-20 08:18:02,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:18:02,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694651823] [2022-03-20 08:18:02,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:18:02,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:18:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:18:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:18:02,529 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 08:18:02,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:18:02,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694651823] [2022-03-20 08:18:02,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694651823] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:18:02,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:18:02,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 08:18:02,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101676515] [2022-03-20 08:18:02,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:18:02,537 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 08:18:02,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:18:02,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 08:18:02,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 08:18:02,573 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 08:18:02,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:18:02,630 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-03-20 08:18:02,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 08:18:02,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2022-03-20 08:18:02,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:18:02,647 INFO L225 Difference]: With dead ends: 29 [2022-03-20 08:18:02,647 INFO L226 Difference]: Without dead ends: 12 [2022-03-20 08:18:02,650 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 08:18:02,654 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:18:02,659 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:18:02,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-03-20 08:18:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-03-20 08:18:02,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 08:18:02,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-03-20 08:18:02,692 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-03-20 08:18:02,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:18:02,693 INFO L478 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-03-20 08:18:02,693 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 08:18:02,693 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-03-20 08:18:02,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 08:18:02,694 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:18:02,694 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:18:02,694 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 08:18:02,695 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:18:02,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:18:02,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1689692768, now seen corresponding path program 1 times [2022-03-20 08:18:02,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:18:02,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673849904] [2022-03-20 08:18:02,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:18:02,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:18:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 08:18:02,752 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 08:18:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 08:18:02,813 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 08:18:02,813 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 08:18:02,815 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 08:18:02,817 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 08:18:02,824 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-20 08:18:02,828 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 08:18:02,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:18:02 BasicIcfg [2022-03-20 08:18:02,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 08:18:02,857 INFO L158 Benchmark]: Toolchain (without parser) took 1454.18ms. Allocated memory was 176.2MB in the beginning and 240.1MB in the end (delta: 64.0MB). Free memory was 117.5MB in the beginning and 166.4MB in the end (delta: -48.9MB). Peak memory consumption was 14.6MB. Max. memory is 8.0GB. [2022-03-20 08:18:02,858 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 176.2MB. Free memory is still 133.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 08:18:02,860 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.24ms. Allocated memory was 176.2MB in the beginning and 240.1MB in the end (delta: 64.0MB). Free memory was 117.2MB in the beginning and 214.6MB in the end (delta: -97.4MB). Peak memory consumption was 16.4MB. Max. memory is 8.0GB. [2022-03-20 08:18:02,861 INFO L158 Benchmark]: Boogie Preprocessor took 25.10ms. Allocated memory is still 240.1MB. Free memory was 214.6MB in the beginning and 212.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 08:18:02,864 INFO L158 Benchmark]: RCFGBuilder took 228.49ms. Allocated memory is still 240.1MB. Free memory was 212.9MB in the beginning and 202.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 08:18:02,865 INFO L158 Benchmark]: IcfgTransformer took 426.46ms. Allocated memory is still 240.1MB. Free memory was 202.6MB in the beginning and 191.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 08:18:02,865 INFO L158 Benchmark]: TraceAbstraction took 542.56ms. Allocated memory is still 240.1MB. Free memory was 191.0MB in the beginning and 166.4MB in the end (delta: 24.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-03-20 08:18:02,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 176.2MB. Free memory is still 133.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 223.24ms. Allocated memory was 176.2MB in the beginning and 240.1MB in the end (delta: 64.0MB). Free memory was 117.2MB in the beginning and 214.6MB in the end (delta: -97.4MB). Peak memory consumption was 16.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.10ms. Allocated memory is still 240.1MB. Free memory was 214.6MB in the beginning and 212.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 228.49ms. Allocated memory is still 240.1MB. Free memory was 212.9MB in the beginning and 202.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 426.46ms. Allocated memory is still 240.1MB. Free memory was 202.6MB in the beginning and 191.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 542.56ms. Allocated memory is still 240.1MB. Free memory was 191.0MB in the beginning and 166.4MB in the end (delta: 24.6MB). Peak memory consumption was 24.1MB. 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 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = __VERIFIER_nondet_uint(); [L15] unsigned int y = x + 1; VAL [x=4294967295, y=0] [L17] COND FALSE !(x < 1024) VAL [x=4294967295, y=0] [L22] CALL __VERIFIER_assert(x == y) VAL [\old(cond)=0] [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 16 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2022-03-20 08:18:02,912 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...