/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:32:56,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:32:56,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:32:56,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 23:32:56,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 23:32:56,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 23:32:56,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 23:32:56,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 23:32:56,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 23:32:56,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 23:32:56,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 23:32:56,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 23:32:56,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:32:56,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:32:56,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:32:56,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:32:56,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:32:56,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:32:56,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:32:56,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:32:56,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:32:56,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:32:56,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:32:56,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:32:56,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 23:32:56,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 23:32:56,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 23:32:56,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 23:32:56,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 23:32:56,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 23:32:56,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 23:32:56,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 23:32:56,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 23:32:56,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 23:32:56,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 23:32:56,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 23:32:56,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 23:32:56,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 23:32:56,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:32:56,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:32:56,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:32:56,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-01-31 23:32:56,245 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:32:56,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:32:56,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:32:56,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:32:56,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:32:56,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:32:56,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:32:56,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:32:56,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:32:56,247 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:32:56,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:32:56,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:32:56,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:32:56,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:32:56,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:32:56,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:32:56,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:32:56,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:32:56,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:32:56,248 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-01-31 23:32:56,249 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:32:56,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:32:56,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:32:56,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:32:56,428 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:32:56,429 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:32:56,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound10.c [2022-01-31 23:32:56,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e55c208c/f7092743dfd14d3abae56662d35fdbf7/FLAGebfe20129 [2022-01-31 23:32:56,849 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:32:56,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound10.c [2022-01-31 23:32:56,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e55c208c/f7092743dfd14d3abae56662d35fdbf7/FLAGebfe20129 [2022-01-31 23:32:57,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e55c208c/f7092743dfd14d3abae56662d35fdbf7 [2022-01-31 23:32:57,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:32:57,277 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:32:57,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:32:57,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:32:57,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:32:57,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:32:57" (1/1) ... [2022-01-31 23:32:57,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@227f7d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:32:57, skipping insertion in model container [2022-01-31 23:32:57,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:32:57" (1/1) ... [2022-01-31 23:32:57,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:32:57,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:32:57,404 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound10.c[588,601] [2022-01-31 23:32:57,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:32:57,420 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:32:57,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound10.c[588,601] [2022-01-31 23:32:57,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:32:57,463 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:32:57,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:32:57 WrapperNode [2022-01-31 23:32:57,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:32:57,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:32:57,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:32:57,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:32:57,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:32:57" (1/1) ... [2022-01-31 23:32:57,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:32:57" (1/1) ... [2022-01-31 23:32:57,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:32:57" (1/1) ... [2022-01-31 23:32:57,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:32:57" (1/1) ... [2022-01-31 23:32:57,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:32:57" (1/1) ... [2022-01-31 23:32:57,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:32:57" (1/1) ... [2022-01-31 23:32:57,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:32:57" (1/1) ... [2022-01-31 23:32:57,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:32:57,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:32:57,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:32:57,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:32:57,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:32:57" (1/1) ... [2022-01-31 23:32:57,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:32:57,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:32:57,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 23:32:57,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 23:32:57,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:32:57,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:32:57,558 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:32:57,559 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 23:32:57,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 23:32:57,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:32:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:32:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:32:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:32:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:32:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2022-01-31 23:32:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 23:32:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 23:32:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:32:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:32:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:32:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:32:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:32:57,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:32:57,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:32:57,617 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:32:57,618 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:32:57,738 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:32:57,742 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:32:57,742 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 23:32:57,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:32:57 BoogieIcfgContainer [2022-01-31 23:32:57,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:32:57,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:32:57,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:32:57,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:32:57,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:32:57" (1/3) ... [2022-01-31 23:32:57,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bb4c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:32:57, skipping insertion in model container [2022-01-31 23:32:57,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:32:57" (2/3) ... [2022-01-31 23:32:57,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bb4c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:32:57, skipping insertion in model container [2022-01-31 23:32:57,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:32:57" (3/3) ... [2022-01-31 23:32:57,771 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound10.c [2022-01-31 23:32:57,776 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:32:57,776 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:32:57,804 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:32:57,813 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR [2022-01-31 23:32:57,813 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:32:57,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 23:32:57,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-31 23:32:57,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:32:57,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:32:57,828 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:32:57,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:32:57,832 INFO L85 PathProgramCache]: Analyzing trace with hash 503189915, now seen corresponding path program 1 times [2022-01-31 23:32:57,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:32:57,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028091823] [2022-01-31 23:32:57,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:32:57,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:32:57,889 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:32:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:32:58,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:32:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:32:58,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:32:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:32:58,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:32:58,030 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:32:58,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028091823] [2022-01-31 23:32:58,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1028091823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:32:58,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:32:58,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 23:32:58,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353708023] [2022-01-31 23:32:58,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:32:58,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 23:32:58,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:32:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 23:32:58,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 23:32:58,060 INFO L87 Difference]: Start difference. First operand has 36 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 23:32:58,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:32:58,154 INFO L93 Difference]: Finished difference Result 63 states and 101 transitions. [2022-01-31 23:32:58,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 23:32:58,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-01-31 23:32:58,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:32:58,165 INFO L225 Difference]: With dead ends: 63 [2022-01-31 23:32:58,165 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 23:32:58,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 23:32:58,170 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:32:58,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 37 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:32:58,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 23:32:58,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-01-31 23:32:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 23:32:58,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2022-01-31 23:32:58,205 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 17 [2022-01-31 23:32:58,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:32:58,205 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2022-01-31 23:32:58,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 23:32:58,206 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2022-01-31 23:32:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-31 23:32:58,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:32:58,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:32:58,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:32:58,207 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:32:58,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:32:58,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1171868123, now seen corresponding path program 1 times [2022-01-31 23:32:58,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:32:58,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167033685] [2022-01-31 23:32:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:32:58,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:32:58,214 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:32:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:32:58,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:32:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:32:58,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:32:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:32:58,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:32:58,369 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:32:58,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167033685] [2022-01-31 23:32:58,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [167033685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:32:58,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:32:58,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 23:32:58,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839269563] [2022-01-31 23:32:58,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:32:58,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 23:32:58,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:32:58,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 23:32:58,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 23:32:58,373 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 23:32:58,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:32:58,507 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-01-31 23:32:58,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 23:32:58,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-01-31 23:32:58,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:32:58,508 INFO L225 Difference]: With dead ends: 37 [2022-01-31 23:32:58,508 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 23:32:58,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-01-31 23:32:58,510 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 22 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:32:58,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 43 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:32:58,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 23:32:58,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-01-31 23:32:58,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 23:32:58,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2022-01-31 23:32:58,518 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 17 [2022-01-31 23:32:58,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:32:58,518 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2022-01-31 23:32:58,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 23:32:58,518 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2022-01-31 23:32:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 23:32:58,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:32:58,519 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:32:58,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:32:58,519 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:32:58,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:32:58,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1781524074, now seen corresponding path program 1 times [2022-01-31 23:32:58,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:32:58,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622177778] [2022-01-31 23:32:58,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:32:58,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:32:58,521 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:32:58,527 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 23:32:58,528 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 23:32:58,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:32:58,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 23:32:58,535 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-31 23:32:58,536 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:32:58,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:32:58 BoogieIcfgContainer [2022-01-31 23:32:58,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:32:58,544 INFO L158 Benchmark]: Toolchain (without parser) took 1267.07ms. Allocated memory was 156.2MB in the beginning and 208.7MB in the end (delta: 52.4MB). Free memory was 100.8MB in the beginning and 122.4MB in the end (delta: -21.6MB). Peak memory consumption was 31.0MB. Max. memory is 8.0GB. [2022-01-31 23:32:58,545 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 156.2MB. Free memory was 116.8MB in the beginning and 116.7MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:32:58,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.42ms. Allocated memory was 156.2MB in the beginning and 208.7MB in the end (delta: 52.4MB). Free memory was 100.5MB in the beginning and 184.1MB in the end (delta: -83.6MB). Peak memory consumption was 12.5MB. Max. memory is 8.0GB. [2022-01-31 23:32:58,545 INFO L158 Benchmark]: Boogie Preprocessor took 32.78ms. Allocated memory is still 208.7MB. Free memory was 184.1MB in the beginning and 182.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 23:32:58,546 INFO L158 Benchmark]: RCFGBuilder took 245.90ms. Allocated memory is still 208.7MB. Free memory was 182.7MB in the beginning and 170.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 23:32:58,546 INFO L158 Benchmark]: TraceAbstraction took 787.63ms. Allocated memory is still 208.7MB. Free memory was 169.6MB in the beginning and 122.4MB in the end (delta: 47.2MB). Peak memory consumption was 47.2MB. Max. memory is 8.0GB. [2022-01-31 23:32:58,547 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 156.2MB. Free memory was 116.8MB in the beginning and 116.7MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 185.42ms. Allocated memory was 156.2MB in the beginning and 208.7MB in the end (delta: 52.4MB). Free memory was 100.5MB in the beginning and 184.1MB in the end (delta: -83.6MB). Peak memory consumption was 12.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.78ms. Allocated memory is still 208.7MB. Free memory was 184.1MB in the beginning and 182.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 245.90ms. Allocated memory is still 208.7MB. Free memory was 182.7MB in the beginning and 170.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 787.63ms. Allocated memory is still 208.7MB. Free memory was 169.6MB in the beginning and 122.4MB in the end (delta: 47.2MB). Peak memory consumption was 47.2MB. 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 - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L23] short a; [L24] long long n, x, y, z; [L25] a = __VERIFIER_nondet_ushort() [L26] CALL assume_abort_if_not(a>=0 && a<=10) [L12] COND FALSE !(!cond) [L26] RET assume_abort_if_not(a>=0 && a<=10) [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 [L33] COND TRUE 1 [L34] CALL __VERIFIER_assert(z == 6 * n + 6) [L15] COND FALSE !(!(cond)) [L34] RET __VERIFIER_assert(z == 6 * n + 6) [L35] CALL __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 50 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 80 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 120 IncrementalHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 60 mSDtfsCounter, 120 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 could not prove your program: unable to determine feasibility of some traces [2022-01-31 23:32:58,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...