/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/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 02:36:58,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 02:36:58,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 02:36:58,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-05 02:36:58,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-05 02:36:58,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-05 02:36:58,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-05 02:36:58,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-05 02:36:58,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-05 02:36:58,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-05 02:36:58,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-05 02:36:58,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-04-05 02:36:58,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 02:36:58,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 02:36:58,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 02:36:58,980 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 02:36:58,989 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 02:36:58,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 02:36:58,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 02:36:58,991 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 02:36:58,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 02:36:58,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 02:36:58,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 02:36:58,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 02:36:58,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 02:36:58,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 02:36:58,992 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 02:36:58,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 02:36:58,992 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 02:36:58,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 02:36:58,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 02:36:58,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 02:36:58,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 02:36:58,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 02:36:58,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 02:36:58,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 02:36:58,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 02:36:58,993 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 02:36:58,993 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 02:36:59,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 02:36:59,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 02:36:59,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 02:36:59,193 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 02:36:59,193 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 02:36:59,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound2.c [2022-04-05 02:36:59,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a674ed0e1/7ffa72b3379248e39243c68e91f290d6/FLAGec03ccd52 [2022-04-05 02:36:59,589 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 02:36:59,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound2.c [2022-04-05 02:36:59,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a674ed0e1/7ffa72b3379248e39243c68e91f290d6/FLAGec03ccd52 [2022-04-05 02:37:00,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a674ed0e1/7ffa72b3379248e39243c68e91f290d6 [2022-04-05 02:37:00,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 02:37:00,040 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 02:37:00,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 02:37:00,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 02:37:00,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 02:37:00,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 02:37:00" (1/1) ... [2022-04-05 02:37:00,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce2b74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:00, skipping insertion in model container [2022-04-05 02:37:00,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 02:37:00" (1/1) ... [2022-04-05 02:37:00,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 02:37:00,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 02:37:00,162 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/fermat2-ll_valuebound2.c[524,537] [2022-04-05 02:37:00,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 02:37:00,198 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 02:37:00,206 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/fermat2-ll_valuebound2.c[524,537] [2022-04-05 02:37:00,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 02:37:00,231 INFO L208 MainTranslator]: Completed translation [2022-04-05 02:37:00,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:00 WrapperNode [2022-04-05 02:37:00,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 02:37:00,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 02:37:00,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 02:37:00,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 02:37:00,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:00" (1/1) ... [2022-04-05 02:37:00,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:00" (1/1) ... [2022-04-05 02:37:00,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:00" (1/1) ... [2022-04-05 02:37:00,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:00" (1/1) ... [2022-04-05 02:37:00,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:00" (1/1) ... [2022-04-05 02:37:00,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:00" (1/1) ... [2022-04-05 02:37:00,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:00" (1/1) ... [2022-04-05 02:37:00,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 02:37:00,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 02:37:00,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 02:37:00,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 02:37:00,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:00" (1/1) ... [2022-04-05 02:37:00,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 02:37:00,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:37:00,288 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) [2022-04-05 02:37:00,324 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 [2022-04-05 02:37:00,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 02:37:00,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 02:37:00,334 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 02:37:00,335 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 02:37:00,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 02:37:00,335 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 02:37:00,335 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 02:37:00,335 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 02:37:00,335 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 02:37:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 02:37:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 02:37:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 02:37:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 02:37:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 02:37:00,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 02:37:00,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 02:37:00,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 02:37:00,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 02:37:00,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 02:37:00,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 02:37:00,382 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 02:37:00,384 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 02:37:00,508 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 02:37:00,512 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 02:37:00,512 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-05 02:37:00,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:37:00 BoogieIcfgContainer [2022-04-05 02:37:00,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 02:37:00,514 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 02:37:00,514 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 02:37:00,526 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 02:37:00,528 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:37:00" (1/1) ... [2022-04-05 02:37:00,529 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 02:37:00,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 02:37:00 BasicIcfg [2022-04-05 02:37:00,556 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 02:37:00,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 02:37:00,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 02:37:00,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 02:37:00,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 02:37:00" (1/4) ... [2022-04-05 02:37:00,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18df3d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 02:37:00, skipping insertion in model container [2022-04-05 02:37:00,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:00" (2/4) ... [2022-04-05 02:37:00,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18df3d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 02:37:00, skipping insertion in model container [2022-04-05 02:37:00,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:37:00" (3/4) ... [2022-04-05 02:37:00,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18df3d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 02:37:00, skipping insertion in model container [2022-04-05 02:37:00,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 02:37:00" (4/4) ... [2022-04-05 02:37:00,562 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound2.cJordan [2022-04-05 02:37:00,565 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 02:37:00,565 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 02:37:00,605 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 02:37:00,611 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-05 02:37:00,611 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 02:37:00,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-05 02:37:00,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-05 02:37:00,637 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:37:00,637 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:37:00,638 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:37:00,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:37:00,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1450325676, now seen corresponding path program 1 times [2022-04-05 02:37:00,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:37:00,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496061840] [2022-04-05 02:37:00,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:37:00,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:37:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:37:00,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 02:37:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:37:00,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 02:37:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:37:00,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 02:37:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:37:00,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 02:37:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:37:00,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 02:37:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:37:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 02:37:00,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:37:00,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496061840] [2022-04-05 02:37:00,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496061840] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:37:00,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:37:00,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 02:37:00,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470461467] [2022-04-05 02:37:00,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:37:00,846 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 02:37:00,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:37:00,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 02:37:00,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 02:37:00,873 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:37:00,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:37:00,929 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-04-05 02:37:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 02:37:00,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-04-05 02:37:00,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:37:00,935 INFO L225 Difference]: With dead ends: 32 [2022-04-05 02:37:00,935 INFO L226 Difference]: Without dead ends: 27 [2022-04-05 02:37:00,936 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 02:37:00,938 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 02:37:00,939 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 02:37:00,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-05 02:37:00,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-05 02:37:00,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-05 02:37:00,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-04-05 02:37:00,966 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 33 [2022-04-05 02:37:00,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:37:00,967 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-04-05 02:37:00,968 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-05 02:37:00,968 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-04-05 02:37:00,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-05 02:37:00,969 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 02:37:00,969 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 02:37:00,970 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 02:37:00,970 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 02:37:00,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 02:37:00,971 INFO L85 PathProgramCache]: Analyzing trace with hash 512475503, now seen corresponding path program 1 times [2022-04-05 02:37:00,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 02:37:00,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875453609] [2022-04-05 02:37:00,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:37:00,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 02:37:01,007 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 02:37:01,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572005704] [2022-04-05 02:37:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 02:37:01,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:37:01,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 02:37:01,015 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 02:37:01,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-05 02:37:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 02:37:01,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-05 02:37:01,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 02:37:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 02:37:08,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 02:37:08,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 02:37:08,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875453609] [2022-04-05 02:37:08,178 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 02:37:08,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572005704] [2022-04-05 02:37:08,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572005704] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 02:37:08,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 02:37:08,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-05 02:37:08,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240189168] [2022-04-05 02:37:08,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 02:37:08,180 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 02:37:08,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 02:37:08,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 02:37:08,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=84, Unknown=1, NotChecked=0, Total=110 [2022-04-05 02:37:08,180 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-05 02:37:08,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 02:37:08,302 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-04-05 02:37:08,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 02:37:08,302 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 33 [2022-04-05 02:37:08,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 02:37:08,303 INFO L225 Difference]: With dead ends: 24 [2022-04-05 02:37:08,303 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 02:37:08,303 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=40, Invalid=141, Unknown=1, NotChecked=0, Total=182 [2022-04-05 02:37:08,304 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 17 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 02:37:08,304 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 86 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 02:37:08,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 02:37:08,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 02:37:08,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-05 02:37:08,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 02:37:08,305 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2022-04-05 02:37:08,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 02:37:08,306 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 02:37:08,306 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-05 02:37:08,306 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 02:37:08,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 02:37:08,308 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 02:37:08,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-05 02:37:08,523 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 02:37:08,526 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-05 02:37:08,527 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 02:37:08,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 02:37:08 BasicIcfg [2022-04-05 02:37:08,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 02:37:08,529 INFO L158 Benchmark]: Toolchain (without parser) took 8489.16ms. Allocated memory was 173.0MB in the beginning and 211.8MB in the end (delta: 38.8MB). Free memory was 147.5MB in the beginning and 150.8MB in the end (delta: -3.3MB). Peak memory consumption was 34.4MB. Max. memory is 8.0GB. [2022-04-05 02:37:08,529 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 173.0MB. Free memory is still 133.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 02:37:08,530 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.39ms. Allocated memory was 173.0MB in the beginning and 211.8MB in the end (delta: 38.8MB). Free memory was 147.3MB in the beginning and 183.8MB in the end (delta: -36.5MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. [2022-04-05 02:37:08,530 INFO L158 Benchmark]: Boogie Preprocessor took 31.86ms. Allocated memory is still 211.8MB. Free memory was 183.8MB in the beginning and 182.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 02:37:08,530 INFO L158 Benchmark]: RCFGBuilder took 248.38ms. Allocated memory is still 211.8MB. Free memory was 182.2MB in the beginning and 171.9MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-05 02:37:08,531 INFO L158 Benchmark]: IcfgTransformer took 42.41ms. Allocated memory is still 211.8MB. Free memory was 171.9MB in the beginning and 170.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 02:37:08,531 INFO L158 Benchmark]: TraceAbstraction took 7971.62ms. Allocated memory is still 211.8MB. Free memory was 169.8MB in the beginning and 150.8MB in the end (delta: 19.0MB). Peak memory consumption was 18.3MB. Max. memory is 8.0GB. [2022-04-05 02:37:08,533 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 173.0MB. Free memory is still 133.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 191.39ms. Allocated memory was 173.0MB in the beginning and 211.8MB in the end (delta: 38.8MB). Free memory was 147.3MB in the beginning and 183.8MB in the end (delta: -36.5MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.86ms. Allocated memory is still 211.8MB. Free memory was 183.8MB in the beginning and 182.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 248.38ms. Allocated memory is still 211.8MB. Free memory was 182.2MB in the beginning and 171.9MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 42.41ms. Allocated memory is still 211.8MB. Free memory was 171.9MB in the beginning and 170.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 7971.62ms. Allocated memory is still 211.8MB. Free memory was 169.8MB in the beginning and 150.8MB in the end (delta: 19.0MB). Peak memory consumption was 18.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.9s, OverallIterations: 2, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 120 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 72 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 107 IncrementalHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 48 mSDtfsCounter, 107 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 14, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 299 SizeOfPredicates, 6 NumberOfNonLiveVariables, 99 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 48/48 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-05 02:37:08,552 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...