/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_vardep_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 14:34:13,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 14:34:13,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 14:34:14,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 14:34:14,048 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-06 14:34:14,053 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 14:34:14,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 14:34:14,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 14:34:14,055 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 14:34:14,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 14:34:14,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 14:34:14,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 14:34:14,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 14:34:14,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 14:34:14,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 14:34:14,055 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 14:34:14,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 14:34:14,056 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 14:34:14,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 14:34:14,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 14:34:14,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 14:34:14,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 14:34:14,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 14:34:14,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 14:34:14,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 14:34:14,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-06 14:34:14,056 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-06 14:34:14,057 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-06 14:34:14,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 14:34:14,057 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-06 14:34:14,057 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 14:34:14,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 14:34:14,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 14:34:14,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 14:34:14,224 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 14:34:14,224 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 14:34:14,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_1.c [2022-04-06 14:34:14,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84e7b38b3/fd9508d300cd421a99bc204254ef2df8/FLAG6d513577b [2022-04-06 14:34:14,625 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 14:34:14,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_1.c [2022-04-06 14:34:14,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84e7b38b3/fd9508d300cd421a99bc204254ef2df8/FLAG6d513577b [2022-04-06 14:34:15,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84e7b38b3/fd9508d300cd421a99bc204254ef2df8 [2022-04-06 14:34:15,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 14:34:15,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 14:34:15,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 14:34:15,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 14:34:15,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 14:34:15,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 02:34:15" (1/1) ... [2022-04-06 14:34:15,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58555131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:34:15, skipping insertion in model container [2022-04-06 14:34:15,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 02:34:15" (1/1) ... [2022-04-06 14:34:15,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 14:34:15,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 14:34:15,189 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-crafted/simple_vardep_1.c[584,597] [2022-04-06 14:34:15,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 14:34:15,204 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 14:34:15,214 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-crafted/simple_vardep_1.c[584,597] [2022-04-06 14:34:15,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 14:34:15,227 INFO L208 MainTranslator]: Completed translation [2022-04-06 14:34:15,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:34:15 WrapperNode [2022-04-06 14:34:15,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 14:34:15,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 14:34:15,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 14:34:15,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 14:34:15,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:34:15" (1/1) ... [2022-04-06 14:34:15,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:34:15" (1/1) ... [2022-04-06 14:34:15,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:34:15" (1/1) ... [2022-04-06 14:34:15,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:34:15" (1/1) ... [2022-04-06 14:34:15,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:34:15" (1/1) ... [2022-04-06 14:34:15,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:34:15" (1/1) ... [2022-04-06 14:34:15,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:34:15" (1/1) ... [2022-04-06 14:34:15,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 14:34:15,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 14:34:15,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 14:34:15,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 14:34:15,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:34:15" (1/1) ... [2022-04-06 14:34:15,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 14:34:15,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:34:15,276 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) [2022-04-06 14:34:15,285 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 [2022-04-06 14:34:15,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 14:34:15,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 14:34:15,304 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 14:34:15,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 14:34:15,304 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 14:34:15,304 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 14:34:15,304 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 14:34:15,304 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 14:34:15,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 14:34:15,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 14:34:15,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 14:34:15,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 14:34:15,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 14:34:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 14:34:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 14:34:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 14:34:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 14:34:15,357 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 14:34:15,359 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 14:34:15,424 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 14:34:15,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 14:34:15,428 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 14:34:15,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 02:34:15 BoogieIcfgContainer [2022-04-06 14:34:15,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 14:34:15,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 14:34:15,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 14:34:15,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 14:34:15,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 02:34:15" (1/3) ... [2022-04-06 14:34:15,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d38033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 02:34:15, skipping insertion in model container [2022-04-06 14:34:15,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:34:15" (2/3) ... [2022-04-06 14:34:15,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d38033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 02:34:15, skipping insertion in model container [2022-04-06 14:34:15,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 02:34:15" (3/3) ... [2022-04-06 14:34:15,436 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_vardep_1.c [2022-04-06 14:34:15,440 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-06 14:34:15,440 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 14:34:15,467 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 14:34:15,472 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 [2022-04-06 14:34:15,472 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 14:34:15,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-06 14:34:15,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-06 14:34:15,486 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:34:15,487 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:34:15,487 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:34:15,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:34:15,495 INFO L85 PathProgramCache]: Analyzing trace with hash -221021474, now seen corresponding path program 1 times [2022-04-06 14:34:15,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:15,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2078782028] [2022-04-06 14:34:15,508 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 14:34:15,508 INFO L85 PathProgramCache]: Analyzing trace with hash -221021474, now seen corresponding path program 2 times [2022-04-06 14:34:15,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:34:15,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061859356] [2022-04-06 14:34:15,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:34:15,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:34:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:15,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:34:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:34:15,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:34:15,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:34:15,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061859356] [2022-04-06 14:34:15,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061859356] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:15,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:15,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 14:34:15,824 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:34:15,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2078782028] [2022-04-06 14:34:15,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2078782028] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:34:15,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:34:15,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 14:34:15,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106937281] [2022-04-06 14:34:15,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:34:15,828 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 14:34:15,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:34:15,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 14:34:15,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-04-06 14:34:15,878 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:34:15,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:34:15,991 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2022-04-06 14:34:15,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 14:34:15,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-06 14:34:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:34:15,996 INFO L225 Difference]: With dead ends: 29 [2022-04-06 14:34:15,997 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 14:34:15,999 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-04-06 14:34:16,001 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 14:34:16,002 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 32 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 14:34:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 14:34:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 14:34:16,023 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) [2022-04-06 14:34:16,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 14:34:16,024 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-04-06 14:34:16,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:34:16,025 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 14:34:16,025 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:34:16,025 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 14:34:16,025 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 14:34:16,027 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 14:34:16,027 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 14:34:16,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-06 14:34:16,103 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 6) no Hoare annotation was computed. [2022-04-06 14:34:16,103 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 6) no Hoare annotation was computed. [2022-04-06 14:34:16,103 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 6) no Hoare annotation was computed. [2022-04-06 14:34:16,104 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-06 14:34:16,104 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|)) [2022-04-06 14:34:16,104 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-06 14:34:16,104 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-06 14:34:16,104 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-06 14:34:16,104 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-06 14:34:16,105 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-06 14:34:16,105 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 15 29) the Hoare annotation is: true [2022-04-06 14:34:16,105 INFO L878 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (let ((.cse2 (div main_~k~0 4294967296)) (.cse3 (div (+ main_~i~0 main_~j~0) 4294967296))) (let ((.cse1 (+ (* .cse3 4294967296) main_~k~0)) (.cse0 (* .cse2 4294967296))) (and (<= (+ main_~i~0 main_~j~0 .cse0) .cse1) (< .cse1 (+ main_~i~0 main_~j~0 .cse0 1)) (not (<= (+ .cse2 1) .cse3))))) [2022-04-06 14:34:16,105 INFO L878 garLoopResultBuilder]: At program point L26-1(lines 21 27) the Hoare annotation is: (let ((.cse2 (div main_~k~0 4294967296)) (.cse3 (div (+ main_~i~0 main_~j~0) 4294967296))) (let ((.cse1 (+ (* .cse3 4294967296) main_~k~0)) (.cse0 (* .cse2 4294967296))) (and (<= (+ main_~i~0 main_~j~0 .cse0) .cse1) (< .cse1 (+ main_~i~0 main_~j~0 .cse0 1)) (not (<= (+ .cse2 1) .cse3))))) [2022-04-06 14:34:16,105 INFO L878 garLoopResultBuilder]: At program point mainEXIT(lines 15 29) the Hoare annotation is: (let ((.cse2 (div main_~k~0 4294967296)) (.cse3 (div (+ main_~i~0 main_~j~0) 4294967296))) (let ((.cse1 (+ (* .cse3 4294967296) main_~k~0)) (.cse0 (* .cse2 4294967296))) (and (<= (+ main_~i~0 main_~j~0 .cse0) .cse1) (< .cse1 (+ main_~i~0 main_~j~0 .cse0 1)) (not (<= (+ .cse2 1) .cse3))))) [2022-04-06 14:34:16,105 INFO L878 garLoopResultBuilder]: At program point L21-2(lines 15 29) the Hoare annotation is: (let ((.cse2 (div main_~k~0 4294967296)) (.cse3 (div (+ main_~i~0 main_~j~0) 4294967296))) (let ((.cse1 (+ (* .cse3 4294967296) main_~k~0)) (.cse0 (* .cse2 4294967296))) (and (<= (+ main_~i~0 main_~j~0 .cse0) .cse1) (< .cse1 (+ main_~i~0 main_~j~0 .cse0 1)) (not (<= (+ .cse2 1) .cse3))))) [2022-04-06 14:34:16,106 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 7 13) the Hoare annotation is: true [2022-04-06 14:34:16,106 INFO L878 garLoopResultBuilder]: At program point L10(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-06 14:34:16,106 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 7 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-06 14:34:16,106 INFO L878 garLoopResultBuilder]: At program point L9(lines 9 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-06 14:34:16,106 INFO L878 garLoopResultBuilder]: At program point L9-2(lines 7 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-06 14:34:16,106 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-06 14:34:16,109 INFO L719 BasicCegarLoop]: Path program histogram: [2] [2022-04-06 14:34:16,110 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 14:34:16,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 02:34:16 BoogieIcfgContainer [2022-04-06 14:34:16,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 14:34:16,124 INFO L158 Benchmark]: Toolchain (without parser) took 1057.86ms. Allocated memory is still 196.1MB. Free memory was 147.7MB in the beginning and 121.9MB in the end (delta: 25.8MB). Peak memory consumption was 24.8MB. Max. memory is 8.0GB. [2022-04-06 14:34:16,124 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 196.1MB. Free memory is still 164.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 14:34:16,125 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.65ms. Allocated memory is still 196.1MB. Free memory was 147.5MB in the beginning and 175.1MB in the end (delta: -27.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-06 14:34:16,125 INFO L158 Benchmark]: Boogie Preprocessor took 16.84ms. Allocated memory is still 196.1MB. Free memory was 175.1MB in the beginning and 173.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 14:34:16,125 INFO L158 Benchmark]: RCFGBuilder took 183.45ms. Allocated memory is still 196.1MB. Free memory was 173.7MB in the beginning and 164.3MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-06 14:34:16,126 INFO L158 Benchmark]: TraceAbstraction took 693.71ms. Allocated memory is still 196.1MB. Free memory was 163.8MB in the beginning and 121.9MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2022-04-06 14:34:16,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 196.1MB. Free memory is still 164.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 160.65ms. Allocated memory is still 196.1MB. Free memory was 147.5MB in the beginning and 175.1MB in the end (delta: -27.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.84ms. Allocated memory is still 196.1MB. Free memory was 175.1MB in the beginning and 173.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 183.45ms. Allocated memory is still 196.1MB. Free memory was 173.7MB in the beginning and 164.3MB in the end (delta: 9.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 693.71ms. Allocated memory is still 196.1MB. Free memory was 163.8MB in the beginning and 121.9MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. 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: 10]: 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, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 11 mSDtfsCounter, 29 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 18 LocationsWithAnnotation, 24 PreInvPairs, 33 NumberOfFragments, 245 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.1s 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: 21]: Loop Invariant Derived loop invariant: (i + j + k / 4294967296 * 4294967296 <= (i + j) / 4294967296 * 4294967296 + k && (i + j) / 4294967296 * 4294967296 + k < i + j + k / 4294967296 * 4294967296 + 1) && !(k / 4294967296 + 1 <= (i + j) / 4294967296) - ProcedureContractResult [Line: 15]: Procedure Contract for main Derived contract for procedure main: (i + j + k / 4294967296 * 4294967296 <= (i + j) / 4294967296 * 4294967296 + k && (i + j) / 4294967296 * 4294967296 + k < i + j + k / 4294967296 * 4294967296 + 1) && !(k / 4294967296 + 1 <= (i + j) / 4294967296) - ProcedureContractResult [Line: 7]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! [2022-04-06 14:34:16,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...