/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/loops/nec11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 00:08:55,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 00:08:55,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 00:08:55,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 00:08:55,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 00:08:55,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 00:08:55,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 00:08:55,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 00:08:55,449 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 00:08:55,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 00:08:55,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 00:08:55,451 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 00:08:55,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 00:08:55,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 00:08:55,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 00:08:55,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 00:08:55,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 00:08:55,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 00:08:55,452 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 00:08:55,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 00:08:55,452 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 00:08:55,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 00:08:55,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 00:08:55,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 00:08:55,452 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 00:08:55,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 00:08:55,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 00:08:55,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 00:08:55,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 00:08:55,453 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 00:08:55,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 00:08:55,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 00:08:55,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 00:08:55,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 00:08:55,662 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 00:08:55,663 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 00:08:55,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec11.c [2022-04-05 00:08:55,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d2e4986/571db2cb9aab4a4d8f68efcd2dbf5175/FLAG6038c49d4 [2022-04-05 00:08:56,092 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 00:08:56,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec11.c [2022-04-05 00:08:56,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d2e4986/571db2cb9aab4a4d8f68efcd2dbf5175/FLAG6038c49d4 [2022-04-05 00:08:56,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d2e4986/571db2cb9aab4a4d8f68efcd2dbf5175 [2022-04-05 00:08:56,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 00:08:56,107 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 00:08:56,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 00:08:56,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 00:08:56,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 00:08:56,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 12:08:56" (1/1) ... [2022-04-05 00:08:56,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a14c5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:08:56, skipping insertion in model container [2022-04-05 00:08:56,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 12:08:56" (1/1) ... [2022-04-05 00:08:56,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 00:08:56,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 00:08:56,249 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/nec11.c[317,330] [2022-04-05 00:08:56,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 00:08:56,264 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 00:08:56,271 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/nec11.c[317,330] [2022-04-05 00:08:56,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 00:08:56,280 INFO L208 MainTranslator]: Completed translation [2022-04-05 00:08:56,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:08:56 WrapperNode [2022-04-05 00:08:56,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 00:08:56,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 00:08:56,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 00:08:56,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 00:08:56,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:08:56" (1/1) ... [2022-04-05 00:08:56,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:08:56" (1/1) ... [2022-04-05 00:08:56,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:08:56" (1/1) ... [2022-04-05 00:08:56,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:08:56" (1/1) ... [2022-04-05 00:08:56,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:08:56" (1/1) ... [2022-04-05 00:08:56,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:08:56" (1/1) ... [2022-04-05 00:08:56,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:08:56" (1/1) ... [2022-04-05 00:08:56,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 00:08:56,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 00:08:56,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 00:08:56,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 00:08:56,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:08:56" (1/1) ... [2022-04-05 00:08:56,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 00:08:56,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 00:08:56,317 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 00:08:56,322 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 00:08:56,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 00:08:56,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 00:08:56,340 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 00:08:56,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 00:08:56,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 00:08:56,340 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 00:08:56,340 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 00:08:56,340 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 00:08:56,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 00:08:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 00:08:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-04-05 00:08:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 00:08:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 00:08:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 00:08:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 00:08:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 00:08:56,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 00:08:56,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 00:08:56,381 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 00:08:56,382 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 00:08:56,459 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 00:08:56,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 00:08:56,464 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-05 00:08:56,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 12:08:56 BoogieIcfgContainer [2022-04-05 00:08:56,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 00:08:56,484 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 00:08:56,484 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 00:08:56,495 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 00:08:56,498 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 12:08:56" (1/1) ... [2022-04-05 00:08:56,499 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 00:08:56,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 12:08:56 BasicIcfg [2022-04-05 00:08:56,507 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 00:08:56,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 00:08:56,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 00:08:56,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 00:08:56,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 12:08:56" (1/4) ... [2022-04-05 00:08:56,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea735ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 12:08:56, skipping insertion in model container [2022-04-05 00:08:56,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:08:56" (2/4) ... [2022-04-05 00:08:56,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea735ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 12:08:56, skipping insertion in model container [2022-04-05 00:08:56,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 12:08:56" (3/4) ... [2022-04-05 00:08:56,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea735ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 12:08:56, skipping insertion in model container [2022-04-05 00:08:56,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 12:08:56" (4/4) ... [2022-04-05 00:08:56,526 INFO L111 eAbstractionObserver]: Analyzing ICFG nec11.cJordan [2022-04-05 00:08:56,529 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 00:08:56,529 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 00:08:56,573 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 00:08:56,578 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 00:08:56,578 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 00:08:56,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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) [2022-04-05 00:08:56,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-05 00:08:56,594 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 00:08:56,595 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 00:08:56,595 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 00:08:56,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 00:08:56,606 INFO L85 PathProgramCache]: Analyzing trace with hash 447419557, now seen corresponding path program 1 times [2022-04-05 00:08:56,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 00:08:56,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524377790] [2022-04-05 00:08:56,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:08:56,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 00:08:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:08:56,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 00:08:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:08:56,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 00:08:56,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 00:08:56,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524377790] [2022-04-05 00:08:56,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524377790] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 00:08:56,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 00:08:56,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 00:08:56,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724296314] [2022-04-05 00:08:56,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 00:08:56,760 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 00:08:56,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 00:08:56,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 00:08:56,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 00:08:56,785 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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) [2022-04-05 00:08:56,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 00:08:56,813 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-04-05 00:08:56,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 00:08:56,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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 [2022-04-05 00:08:56,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 00:08:56,823 INFO L225 Difference]: With dead ends: 21 [2022-04-05 00:08:56,823 INFO L226 Difference]: Without dead ends: 14 [2022-04-05 00:08:56,824 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 00:08:56,828 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 00:08:56,828 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 00:08:56,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-04-05 00:08:56,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-04-05 00:08:56,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 00:08:56,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-04-05 00:08:56,848 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2022-04-05 00:08:56,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 00:08:56,849 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-04-05 00:08:56,849 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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) [2022-04-05 00:08:56,850 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-05 00:08:56,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-05 00:08:56,850 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 00:08:56,850 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 00:08:56,851 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 00:08:56,851 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 00:08:56,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 00:08:56,853 INFO L85 PathProgramCache]: Analyzing trace with hash 448343078, now seen corresponding path program 1 times [2022-04-05 00:08:56,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 00:08:56,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603716641] [2022-04-05 00:08:56,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:08:56,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 00:08:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-05 00:08:56,882 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-05 00:08:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-05 00:08:56,924 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-05 00:08:56,924 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-05 00:08:56,929 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 00:08:56,931 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-05 00:08:56,933 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-05 00:08:56,936 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 00:08:56,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 12:08:56 BasicIcfg [2022-04-05 00:08:56,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 00:08:56,953 INFO L158 Benchmark]: Toolchain (without parser) took 845.88ms. Allocated memory is still 206.6MB. Free memory was 158.0MB in the beginning and 146.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-05 00:08:56,954 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 206.6MB. Free memory was 174.2MB in the beginning and 174.0MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 00:08:56,956 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.31ms. Allocated memory is still 206.6MB. Free memory was 157.7MB in the beginning and 183.6MB in the end (delta: -25.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-05 00:08:56,957 INFO L158 Benchmark]: Boogie Preprocessor took 15.98ms. Allocated memory is still 206.6MB. Free memory was 183.6MB in the beginning and 182.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 00:08:56,959 INFO L158 Benchmark]: RCFGBuilder took 184.94ms. Allocated memory is still 206.6MB. Free memory was 182.1MB in the beginning and 172.5MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-05 00:08:56,959 INFO L158 Benchmark]: IcfgTransformer took 24.00ms. Allocated memory is still 206.6MB. Free memory was 172.5MB in the beginning and 171.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 00:08:56,959 INFO L158 Benchmark]: TraceAbstraction took 444.00ms. Allocated memory is still 206.6MB. Free memory was 170.6MB in the beginning and 146.5MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-04-05 00:08:56,963 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 206.6MB. Free memory was 174.2MB in the beginning and 174.0MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 173.31ms. Allocated memory is still 206.6MB. Free memory was 157.7MB in the beginning and 183.6MB in the end (delta: -25.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.98ms. Allocated memory is still 206.6MB. Free memory was 183.6MB in the beginning and 182.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 184.94ms. Allocated memory is still 206.6MB. Free memory was 182.1MB in the beginning and 172.5MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 24.00ms. Allocated memory is still 206.6MB. Free memory was 172.5MB in the beginning and 171.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 444.00ms. Allocated memory is still 206.6MB. Free memory was 170.6MB in the beginning and 146.5MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int a[5]; [L16] int len=0; [L17] _Bool c=__VERIFIER_nondet_bool(); [L18] int i; VAL [c=0, len=0] [L21] COND FALSE !(\read(c)) VAL [c=0, len=0] [L30] CALL __VERIFIER_assert(len==5) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 21 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-04-05 00:08:56,990 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...