/usr/bin/java -ea -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/loop-zilu/benchmark35_linear.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 10:37:38,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 10:37:38,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 10:37:38,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 10:37:38,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-08 10:37:38,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-08 10:37:38,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-08 10:37:38,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-08 10:37:38,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-08 10:37:38,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-08 10:37:38,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-08 10:37:38,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-08 10:37:38,221 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-08 10:37:38,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-08 10:37:38,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-08 10:37:38,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-08 10:37:38,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-08 10:37:38,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-08 10:37:38,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 10:37:38,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 10:37:38,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 10:37:38,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-08 10:37:38,245 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 10:37:38,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 10:37:38,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 10:37:38,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 10:37:38,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 10:37:38,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 10:37:38,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 10:37:38,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 10:37:38,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 10:37:38,248 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 10:37:38,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 10:37:38,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 10:37:38,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 10:37:38,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 10:37:38,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 10:37:38,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 10:37:38,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 10:37:38,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 10:37:38,249 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 10:37:38,249 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 10:37:38,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 10:37:38,249 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-08 10:37:38,249 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 10:37:38,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 10:37:38,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 10:37:38,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 10:37:38,420 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 10:37:38,421 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 10:37:38,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark35_linear.i [2022-04-08 10:37:38,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0fd1717c/d5e63f10f91c4d02b8a776b33c7b6ec1/FLAG75dc93e1f [2022-04-08 10:37:38,873 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 10:37:38,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark35_linear.i [2022-04-08 10:37:38,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0fd1717c/d5e63f10f91c4d02b8a776b33c7b6ec1/FLAG75dc93e1f [2022-04-08 10:37:38,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0fd1717c/d5e63f10f91c4d02b8a776b33c7b6ec1 [2022-04-08 10:37:38,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 10:37:38,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 10:37:38,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 10:37:38,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 10:37:38,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 10:37:38,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 10:37:38" (1/1) ... [2022-04-08 10:37:38,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46995642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:37:38, skipping insertion in model container [2022-04-08 10:37:38,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 10:37:38" (1/1) ... [2022-04-08 10:37:38,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 10:37:38,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 10:37:39,055 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark35_linear.i[868,881] [2022-04-08 10:37:39,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 10:37:39,074 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 10:37:39,084 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark35_linear.i[868,881] [2022-04-08 10:37:39,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 10:37:39,094 INFO L208 MainTranslator]: Completed translation [2022-04-08 10:37:39,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:37:39 WrapperNode [2022-04-08 10:37:39,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 10:37:39,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 10:37:39,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 10:37:39,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 10:37:39,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:37:39" (1/1) ... [2022-04-08 10:37:39,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:37:39" (1/1) ... [2022-04-08 10:37:39,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:37:39" (1/1) ... [2022-04-08 10:37:39,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:37:39" (1/1) ... [2022-04-08 10:37:39,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:37:39" (1/1) ... [2022-04-08 10:37:39,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:37:39" (1/1) ... [2022-04-08 10:37:39,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:37:39" (1/1) ... [2022-04-08 10:37:39,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 10:37:39,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 10:37:39,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 10:37:39,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 10:37:39,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:37:39" (1/1) ... [2022-04-08 10:37:39,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 10:37:39,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:37:39,157 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) [2022-04-08 10:37:39,159 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 [2022-04-08 10:37:39,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 10:37:39,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 10:37:39,186 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 10:37:39,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 10:37:39,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 10:37:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 10:37:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-08 10:37:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-08 10:37:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 10:37:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 10:37:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-08 10:37:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-04-08 10:37:39,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 10:37:39,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 10:37:39,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 10:37:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 10:37:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 10:37:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 10:37:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 10:37:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 10:37:39,236 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 10:37:39,237 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 10:37:39,362 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 10:37:39,370 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 10:37:39,370 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-08 10:37:39,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 10:37:39 BoogieIcfgContainer [2022-04-08 10:37:39,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 10:37:39,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 10:37:39,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 10:37:39,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 10:37:39,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 10:37:38" (1/3) ... [2022-04-08 10:37:39,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5bd989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 10:37:39, skipping insertion in model container [2022-04-08 10:37:39,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:37:39" (2/3) ... [2022-04-08 10:37:39,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5bd989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 10:37:39, skipping insertion in model container [2022-04-08 10:37:39,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 10:37:39" (3/3) ... [2022-04-08 10:37:39,394 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark35_linear.i [2022-04-08 10:37:39,397 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 10:37:39,398 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 10:37:39,437 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 10:37:39,443 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, 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 [2022-04-08 10:37:39,443 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 10:37:39,457 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 10:37:39,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-08 10:37:39,462 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:37:39,462 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:37:39,463 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:37:39,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:37:39,467 INFO L85 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 1 times [2022-04-08 10:37:39,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:37:39,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [887165203] [2022-04-08 10:37:39,486 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 10:37:39,486 INFO L85 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 2 times [2022-04-08 10:37:39,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:37:39,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808472618] [2022-04-08 10:37:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:37:39,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:37:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:37:39,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 10:37:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:37:39,720 INFO L290 TraceCheckUtils]: 0: Hoare triple {32#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(21, 2); {23#true} is VALID [2022-04-08 10:37:39,720 INFO L290 TraceCheckUtils]: 1: Hoare triple {23#true} assume true; {23#true} is VALID [2022-04-08 10:37:39,721 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {23#true} {23#true} #45#return; {23#true} is VALID [2022-04-08 10:37:39,722 INFO L272 TraceCheckUtils]: 0: Hoare triple {23#true} call ULTIMATE.init(); {32#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 10:37:39,723 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(21, 2); {23#true} is VALID [2022-04-08 10:37:39,723 INFO L290 TraceCheckUtils]: 2: Hoare triple {23#true} assume true; {23#true} is VALID [2022-04-08 10:37:39,723 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {23#true} {23#true} #45#return; {23#true} is VALID [2022-04-08 10:37:39,723 INFO L272 TraceCheckUtils]: 4: Hoare triple {23#true} call #t~ret2 := main(); {23#true} is VALID [2022-04-08 10:37:39,724 INFO L290 TraceCheckUtils]: 5: Hoare triple {23#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~x~0 := #t~nondet1;havoc #t~nondet1; {23#true} is VALID [2022-04-08 10:37:39,725 INFO L290 TraceCheckUtils]: 6: Hoare triple {23#true} assume !!(~x~0 >= 0); {28#(< 0 (+ main_~x~0 1))} is VALID [2022-04-08 10:37:39,725 INFO L290 TraceCheckUtils]: 7: Hoare triple {28#(< 0 (+ main_~x~0 1))} assume !(~x~0 >= 0 && ~x~0 < 10); {29#(< 9 main_~x~0)} is VALID [2022-04-08 10:37:39,728 INFO L272 TraceCheckUtils]: 8: Hoare triple {29#(< 9 main_~x~0)} call __VERIFIER_assert((if ~x~0 >= 10 then 1 else 0)); {30#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 10:37:39,728 INFO L290 TraceCheckUtils]: 9: Hoare triple {30#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {31#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-08 10:37:39,729 INFO L290 TraceCheckUtils]: 10: Hoare triple {31#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {24#false} is VALID [2022-04-08 10:37:39,729 INFO L290 TraceCheckUtils]: 11: Hoare triple {24#false} assume !false; {24#false} is VALID [2022-04-08 10:37:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 10:37:39,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:37:39,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808472618] [2022-04-08 10:37:39,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808472618] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:37:39,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:37:39,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 10:37:39,739 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:37:39,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [887165203] [2022-04-08 10:37:39,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [887165203] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:37:39,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:37:39,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 10:37:39,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693987415] [2022-04-08 10:37:39,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:37:39,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-08 10:37:39,747 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:37:39,749 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:37:39,765 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:37:39,765 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-08 10:37:39,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:37:39,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-08 10:37:39,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-04-08 10:37:39,794 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:37:40,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:37:40,025 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-04-08 10:37:40,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 10:37:40,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-08 10:37:40,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:37:40,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:37:40,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 36 transitions. [2022-04-08 10:37:40,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:37:40,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 36 transitions. [2022-04-08 10:37:40,048 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 36 transitions. [2022-04-08 10:37:40,076 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:37:40,079 INFO L225 Difference]: With dead ends: 32 [2022-04-08 10:37:40,080 INFO L226 Difference]: Without dead ends: 0 [2022-04-08 10:37:40,083 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-04-08 10:37:40,086 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 10:37:40,088 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 43 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 10:37:40,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-08 10:37:40,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-08 10:37:40,102 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:37:40,102 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second 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) [2022-04-08 10:37:40,103 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second 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) [2022-04-08 10:37:40,103 INFO L87 Difference]: Start difference. First operand 0 states. Second 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) [2022-04-08 10:37:40,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:37:40,104 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 10:37:40,104 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 10:37:40,104 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:37:40,104 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:37:40,104 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 0 states. [2022-04-08 10:37:40,105 INFO L87 Difference]: Start difference. First 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) Second operand 0 states. [2022-04-08 10:37:40,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:37:40,105 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 10:37:40,105 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 10:37:40,105 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:37:40,105 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:37:40,105 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:37:40,106 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:37:40,106 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) [2022-04-08 10:37:40,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-08 10:37:40,107 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-04-08 10:37:40,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:37:40,107 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-08 10:37:40,107 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:37:40,108 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-08 10:37:40,108 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:37:40,109 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 10:37:40,111 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:37:40,115 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-08 10:37:40,120 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 10:37:40,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-08 10:37:40,182 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2022-04-08 10:37:40,182 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2022-04-08 10:37:40,182 INFO L882 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2022-04-08 10:37:40,183 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 19 27) the Hoare annotation is: true [2022-04-08 10:37:40,183 INFO L878 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (< 9 main_~x~0) [2022-04-08 10:37:40,183 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 19 27) the Hoare annotation is: true [2022-04-08 10:37:40,183 INFO L885 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2022-04-08 10:37:40,183 INFO L878 garLoopResultBuilder]: At program point L22-2(lines 22 24) the Hoare annotation is: (< 0 (+ main_~x~0 1)) [2022-04-08 10:37:40,183 INFO L878 garLoopResultBuilder]: At program point L22-3(lines 22 24) the Hoare annotation is: (< 9 main_~x~0) [2022-04-08 10:37:40,183 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 19 27) the Hoare annotation is: true [2022-04-08 10:37:40,183 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-08 10:37:40,184 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-08 10:37:40,184 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-08 10:37:40,184 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-08 10:37:40,184 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-08 10:37:40,184 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-08 10:37:40,184 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-08 10:37:40,184 INFO L878 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-08 10:37:40,184 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-08 10:37:40,184 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2022-04-08 10:37:40,184 INFO L878 garLoopResultBuilder]: At program point L15-2(lines 14 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-08 10:37:40,184 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-08 10:37:40,185 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-08 10:37:40,187 INFO L719 BasicCegarLoop]: Path program histogram: [2] [2022-04-08 10:37:40,187 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-08 10:37:40,190 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-08 10:37:40,190 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-08 10:37:40,191 WARN L170 areAnnotationChecker]: L11-1 has no Hoare annotation [2022-04-08 10:37:40,197 INFO L163 areAnnotationChecker]: CFG has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-08 10:37:40,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.04 10:37:40 BoogieIcfgContainer [2022-04-08 10:37:40,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-08 10:37:40,203 INFO L158 Benchmark]: Toolchain (without parser) took 1303.69ms. Allocated memory is still 170.9MB. Free memory was 121.1MB in the beginning and 83.2MB in the end (delta: 38.0MB). Peak memory consumption was 37.1MB. Max. memory is 8.0GB. [2022-04-08 10:37:40,204 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 170.9MB. Free memory was 137.1MB in the beginning and 137.0MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 10:37:40,204 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.41ms. Allocated memory is still 170.9MB. Free memory was 120.9MB in the beginning and 147.1MB in the end (delta: -26.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-08 10:37:40,204 INFO L158 Benchmark]: Boogie Preprocessor took 27.43ms. Allocated memory is still 170.9MB. Free memory was 147.1MB in the beginning and 145.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 10:37:40,204 INFO L158 Benchmark]: RCFGBuilder took 248.18ms. Allocated memory is still 170.9MB. Free memory was 145.5MB in the beginning and 135.1MB in the end (delta: 10.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-08 10:37:40,205 INFO L158 Benchmark]: TraceAbstraction took 829.64ms. Allocated memory is still 170.9MB. Free memory was 134.5MB in the beginning and 83.2MB in the end (delta: 51.4MB). Peak memory consumption was 51.4MB. Max. memory is 8.0GB. [2022-04-08 10:37:40,206 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 170.9MB. Free memory was 137.1MB in the beginning and 137.0MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.41ms. Allocated memory is still 170.9MB. Free memory was 120.9MB in the beginning and 147.1MB in the end (delta: -26.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.43ms. Allocated memory is still 170.9MB. Free memory was 147.1MB in the beginning and 145.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 248.18ms. Allocated memory is still 170.9MB. Free memory was 145.5MB in the beginning and 135.1MB in the end (delta: 10.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 829.64ms. Allocated memory is still 170.9MB. Free memory was 134.5MB in the beginning and 83.2MB in the end (delta: 51.4MB). Peak memory consumption was 51.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: 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, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 51 IncrementalHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 16 mSDtfsCounter, 51 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 26 PreInvPairs, 36 NumberOfFragments, 59 HoareAnnotationTreeSize, 26 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 20 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 < x + 1 - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! [2022-04-08 10:37:40,240 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...