/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/loops/terminator_03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 19:21:10,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 19:21:10,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 19:21:10,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 19:21:10,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 19:21:10,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 19:21:10,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 19:21:10,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 19:21:10,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 19:21:10,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 19:21:10,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 19:21:10,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 19:21:10,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 19:21:10,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 19:21:10,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 19:21:10,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 19:21:10,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 19:21:10,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 19:21:10,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 19:21:10,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 19:21:10,280 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 19:21:10,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 19:21:10,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 19:21:10,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 19:21:10,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 19:21:10,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-17 19:21:10,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 19:21:10,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 19:21:10,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 19:21:10,298 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-17 19:21:10,318 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 19:21:10,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 19:21:10,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-17 19:21:10,320 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-17 19:21:10,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-17 19:21:10,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-17 19:21:10,321 INFO L138 SettingsManager]: * Use SBE=true [2022-03-17 19:21:10,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 19:21:10,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 19:21:10,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 19:21:10,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 19:21:10,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 19:21:10,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 19:21:10,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 19:21:10,322 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 19:21:10,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 19:21:10,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 19:21:10,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 19:21:10,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 19:21:10,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 19:21:10,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 19:21:10,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-17 19:21:10,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-17 19:21:10,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 19:21:10,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-17 19:21:10,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-17 19:21:10,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-17 19:21:10,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-17 19:21:10,324 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 19:21:10,324 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 19:21:10,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 19:21:10,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 19:21:10,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 19:21:10,505 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 19:21:10,506 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 19:21:10,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-1.c [2022-03-17 19:21:10,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8ff587d3/7ede043705874435acb6160ae59507ae/FLAG51728e324 [2022-03-17 19:21:10,899 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 19:21:10,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-1.c [2022-03-17 19:21:10,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8ff587d3/7ede043705874435acb6160ae59507ae/FLAG51728e324 [2022-03-17 19:21:10,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8ff587d3/7ede043705874435acb6160ae59507ae [2022-03-17 19:21:10,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 19:21:10,921 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 19:21:10,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 19:21:10,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 19:21:10,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 19:21:10,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:21:10" (1/1) ... [2022-03-17 19:21:10,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39811291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:10, skipping insertion in model container [2022-03-17 19:21:10,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:21:10" (1/1) ... [2022-03-17 19:21:10,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 19:21:10,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 19:21:11,043 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-1.c[327,340] [2022-03-17 19:21:11,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 19:21:11,054 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 19:21:11,061 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-1.c[327,340] [2022-03-17 19:21:11,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 19:21:11,070 INFO L208 MainTranslator]: Completed translation [2022-03-17 19:21:11,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:11 WrapperNode [2022-03-17 19:21:11,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 19:21:11,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 19:21:11,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 19:21:11,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 19:21:11,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:11" (1/1) ... [2022-03-17 19:21:11,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:11" (1/1) ... [2022-03-17 19:21:11,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:11" (1/1) ... [2022-03-17 19:21:11,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:11" (1/1) ... [2022-03-17 19:21:11,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:11" (1/1) ... [2022-03-17 19:21:11,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:11" (1/1) ... [2022-03-17 19:21:11,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:11" (1/1) ... [2022-03-17 19:21:11,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 19:21:11,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 19:21:11,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 19:21:11,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 19:21:11,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:11" (1/1) ... [2022-03-17 19:21:11,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 19:21:11,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 19:21:11,108 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) [2022-03-17 19:21:11,135 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 [2022-03-17 19:21:11,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 19:21:11,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 19:21:11,140 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 19:21:11,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 19:21:11,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 19:21:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 19:21:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 19:21:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 19:21:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 19:21:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 19:21:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 19:21:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 19:21:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 19:21:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 19:21:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 19:21:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 19:21:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 19:21:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 19:21:11,184 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 19:21:11,185 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 19:21:11,252 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 19:21:11,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 19:21:11,255 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 19:21:11,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 07:21:11 BoogieIcfgContainer [2022-03-17 19:21:11,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 19:21:11,257 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 19:21:11,257 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 19:21:11,258 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 19:21:11,260 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 07:21:11" (1/1) ... [2022-03-17 19:21:11,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 07:21:11 BasicIcfg [2022-03-17 19:21:11,507 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 19:21:11,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 19:21:11,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 19:21:11,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 19:21:11,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:21:10" (1/4) ... [2022-03-17 19:21:11,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7da5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:21:11, skipping insertion in model container [2022-03-17 19:21:11,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:21:11" (2/4) ... [2022-03-17 19:21:11,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7da5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:21:11, skipping insertion in model container [2022-03-17 19:21:11,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 07:21:11" (3/4) ... [2022-03-17 19:21:11,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7da5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 07:21:11, skipping insertion in model container [2022-03-17 19:21:11,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 07:21:11" (4/4) ... [2022-03-17 19:21:11,513 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_03-1.cqvasr [2022-03-17 19:21:11,517 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-17 19:21:11,517 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 19:21:11,561 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 19:21:11,565 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 [2022-03-17 19:21:11,566 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 19:21:11,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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) [2022-03-17 19:21:11,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-17 19:21:11,578 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:21:11,578 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:21:11,578 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 19:21:11,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:21:11,581 INFO L85 PathProgramCache]: Analyzing trace with hash -153385852, now seen corresponding path program 1 times [2022-03-17 19:21:11,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:21:11,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776521640] [2022-03-17 19:21:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:21:11,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:21:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:21:11,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 19:21:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 19:21:11,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 19:21:11,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 19:21:11,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776521640] [2022-03-17 19:21:11,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776521640] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 19:21:11,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 19:21:11,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 19:21:11,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939184937] [2022-03-17 19:21:11,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 19:21:11,781 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 19:21:11,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 19:21:11,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 19:21:11,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-17 19:21:11,805 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 6 states, 5 states have (on average 1.4) internal successors, (7), 4 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) [2022-03-17 19:21:11,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 19:21:11,901 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-03-17 19:21:11,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 19:21:11,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 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 [2022-03-17 19:21:11,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 19:21:11,913 INFO L225 Difference]: With dead ends: 40 [2022-03-17 19:21:11,913 INFO L226 Difference]: Without dead ends: 13 [2022-03-17 19:21:11,916 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-17 19:21:11,918 INFO L912 BasicCegarLoop]: 17 mSDtfsCounter, 25 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 19:21:11,919 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 38 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 19:21:11,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-03-17 19:21:11,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-03-17 19:21:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-03-17 19:21:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-03-17 19:21:11,945 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-03-17 19:21:11,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 19:21:11,945 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-03-17 19:21:11,946 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 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) [2022-03-17 19:21:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-03-17 19:21:11,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-17 19:21:11,947 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 19:21:11,947 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 19:21:11,947 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 19:21:11,947 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 19:21:11,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 19:21:11,949 INFO L85 PathProgramCache]: Analyzing trace with hash -490531812, now seen corresponding path program 1 times [2022-03-17 19:21:11,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 19:21:11,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889941955] [2022-03-17 19:21:11,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 19:21:11,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 19:21:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-17 19:21:11,974 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-17 19:21:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-17 19:21:12,002 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-17 19:21:12,003 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-17 19:21:12,004 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 19:21:12,006 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 19:21:12,008 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-17 19:21:12,010 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 19:21:12,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 07:21:12 BasicIcfg [2022-03-17 19:21:12,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 19:21:12,027 INFO L158 Benchmark]: Toolchain (without parser) took 1106.56ms. Allocated memory is still 185.6MB. Free memory was 133.8MB in the beginning and 112.9MB in the end (delta: 20.9MB). Peak memory consumption was 21.4MB. Max. memory is 8.0GB. [2022-03-17 19:21:12,028 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 185.6MB. Free memory was 149.8MB in the beginning and 149.7MB in the end (delta: 88.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 19:21:12,028 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.28ms. Allocated memory is still 185.6MB. Free memory was 133.5MB in the beginning and 161.8MB in the end (delta: -28.3MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. [2022-03-17 19:21:12,028 INFO L158 Benchmark]: Boogie Preprocessor took 15.94ms. Allocated memory is still 185.6MB. Free memory was 161.8MB in the beginning and 160.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 19:21:12,028 INFO L158 Benchmark]: RCFGBuilder took 168.36ms. Allocated memory is still 185.6MB. Free memory was 160.4MB in the beginning and 150.9MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-17 19:21:12,029 INFO L158 Benchmark]: IcfgTransformer took 250.35ms. Allocated memory is still 185.6MB. Free memory was 150.9MB in the beginning and 142.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-17 19:21:12,029 INFO L158 Benchmark]: TraceAbstraction took 518.63ms. Allocated memory is still 185.6MB. Free memory was 142.0MB in the beginning and 112.9MB in the end (delta: 29.1MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-03-17 19:21:12,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 185.6MB. Free memory was 149.8MB in the beginning and 149.7MB in the end (delta: 88.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 149.28ms. Allocated memory is still 185.6MB. Free memory was 133.5MB in the beginning and 161.8MB in the end (delta: -28.3MB). Peak memory consumption was 13.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.94ms. Allocated memory is still 185.6MB. Free memory was 161.8MB in the beginning and 160.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 168.36ms. Allocated memory is still 185.6MB. Free memory was 160.4MB in the beginning and 150.9MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 250.35ms. Allocated memory is still 185.6MB. Free memory was 150.9MB in the beginning and 142.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 518.63ms. Allocated memory is still 185.6MB. Free memory was 142.0MB in the beginning and 112.9MB in the end (delta: 29.1MB). Peak memory consumption was 29.4MB. 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: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int x=__VERIFIER_nondet_int(); [L16] int y=__VERIFIER_nondet_int(); [L18] COND TRUE y>0 VAL [x=100, y=4] [L20] COND FALSE !(x<100) VAL [x=100, y=4] [L25] CALL __VERIFIER_assert(y<=0 || (y<0 && x>=100)) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 26 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 51 IncrementalHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 17 mSDtfsCounter, 51 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 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! [2022-03-17 19:21:12,054 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...