/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/array-fpi/ifncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:17:32,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:17:32,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:17:32,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:17:32,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:17:32,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:17:32,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:17:32,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:17:32,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:17:32,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:17:32,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:17:32,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:17:32,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:17:32,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:17:32,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:17:32,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:17:32,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:17:32,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:17:32,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:17:32,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:17:32,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-01-31 23:17:32,739 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:17:32,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:17:32,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:17:32,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:17:32,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:17:32,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:17:32,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:17:32,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:17:32,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:17:32,741 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:17:32,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:17:32,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:17:32,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:17:32,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:17:32,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:17:32,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:17:32,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:17:32,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:17:32,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:17:32,743 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-01-31 23:17:32,743 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:17:32,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:17:32,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:17:32,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:17:32,949 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:17:32,949 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:17:32,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifncompf.c [2022-01-31 23:17:33,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c8188d5b/2198e421fb2a4a9fbefb38c701375355/FLAG2606f1f88 [2022-01-31 23:17:33,396 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:17:33,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifncompf.c [2022-01-31 23:17:33,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c8188d5b/2198e421fb2a4a9fbefb38c701375355/FLAG2606f1f88 [2022-01-31 23:17:33,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c8188d5b/2198e421fb2a4a9fbefb38c701375355 [2022-01-31 23:17:33,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:17:33,414 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:17:33,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:17:33,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:17:33,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:17:33,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:17:33" (1/1) ... [2022-01-31 23:17:33,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe670c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:17:33, skipping insertion in model container [2022-01-31 23:17:33,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:17:33" (1/1) ... [2022-01-31 23:17:33,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:17:33,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:17:33,553 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifncompf.c[591,604] [2022-01-31 23:17:33,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:17:33,593 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:17:33,605 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifncompf.c[591,604] [2022-01-31 23:17:33,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:17:33,622 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:17:33,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:17:33 WrapperNode [2022-01-31 23:17:33,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:17:33,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:17:33,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:17:33,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:17:33,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:17:33" (1/1) ... [2022-01-31 23:17:33,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:17:33" (1/1) ... [2022-01-31 23:17:33,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:17:33" (1/1) ... [2022-01-31 23:17:33,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:17:33" (1/1) ... [2022-01-31 23:17:33,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:17:33" (1/1) ... [2022-01-31 23:17:33,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:17:33" (1/1) ... [2022-01-31 23:17:33,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:17:33" (1/1) ... [2022-01-31 23:17:33,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:17:33,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:17:33,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:17:33,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:17:33,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:17:33" (1/1) ... [2022-01-31 23:17:33,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:17:33,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:17:33,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 23:17:33,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 23:17:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:17:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:17:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:17:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 23:17:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 23:17:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:17:33,717 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:17:33,717 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:17:33,717 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:17:33,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:17:33,718 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 23:17:33,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 23:17:33,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 23:17:33,718 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 23:17:33,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:17:33,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 23:17:33,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:17:33,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:17:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:17:33,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:17:33,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:17:33,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:17:33,793 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:17:33,794 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:17:33,964 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:17:33,969 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:17:33,969 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-31 23:17:33,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:17:33 BoogieIcfgContainer [2022-01-31 23:17:33,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:17:33,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:17:33,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:17:33,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:17:33,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:17:33" (1/3) ... [2022-01-31 23:17:33,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5b30b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:17:33, skipping insertion in model container [2022-01-31 23:17:33,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:17:33" (2/3) ... [2022-01-31 23:17:33,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5b30b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:17:33, skipping insertion in model container [2022-01-31 23:17:33,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:17:33" (3/3) ... [2022-01-31 23:17:33,985 INFO L111 eAbstractionObserver]: Analyzing ICFG ifncompf.c [2022-01-31 23:17:33,990 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:17:33,990 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:17:34,037 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:17:34,042 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR [2022-01-31 23:17:34,042 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:17:34,054 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 30 states have (on average 1.5) internal successors, (45), 31 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 23:17:34,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-31 23:17:34,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:17:34,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:17:34,063 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:17:34,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:17:34,067 INFO L85 PathProgramCache]: Analyzing trace with hash 488960429, now seen corresponding path program 1 times [2022-01-31 23:17:34,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:17:34,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334901068] [2022-01-31 23:17:34,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:17:34,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:17:34,113 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:17:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:17:34,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:17:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:17:34,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 23:17:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:17:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:17:34,268 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:17:34,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334901068] [2022-01-31 23:17:34,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [334901068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:17:34,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:17:34,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 23:17:34,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948202810] [2022-01-31 23:17:34,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:17:34,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 23:17:34,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:17:34,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 23:17:34,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 23:17:34,305 INFO L87 Difference]: Start difference. First operand has 40 states, 30 states have (on average 1.5) internal successors, (45), 31 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 23:17:34,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:17:34,395 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2022-01-31 23:17:34,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 23:17:34,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-01-31 23:17:34,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:17:34,403 INFO L225 Difference]: With dead ends: 70 [2022-01-31 23:17:34,403 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 23:17:34,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 23:17:34,409 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:17:34,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 51 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:17:34,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 23:17:34,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-01-31 23:17:34,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 23:17:34,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-01-31 23:17:34,447 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 24 [2022-01-31 23:17:34,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:17:34,448 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-01-31 23:17:34,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 23:17:34,448 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-01-31 23:17:34,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-31 23:17:34,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:17:34,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:17:34,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:17:34,450 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:17:34,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:17:34,452 INFO L85 PathProgramCache]: Analyzing trace with hash -969750770, now seen corresponding path program 1 times [2022-01-31 23:17:34,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:17:34,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705680253] [2022-01-31 23:17:34,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:17:34,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:17:34,461 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:17:34,504 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 23:17:34,504 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 23:17:34,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:17:34,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:17:34,515 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 23:17:34,520 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:17:34,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:17:34 BoogieIcfgContainer [2022-01-31 23:17:34,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:17:34,539 INFO L158 Benchmark]: Toolchain (without parser) took 1124.60ms. Allocated memory was 183.5MB in the beginning and 287.3MB in the end (delta: 103.8MB). Free memory was 129.9MB in the beginning and 214.5MB in the end (delta: -84.6MB). Peak memory consumption was 18.4MB. Max. memory is 8.0GB. [2022-01-31 23:17:34,540 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory is still 146.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:17:34,542 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.22ms. Allocated memory was 183.5MB in the beginning and 287.3MB in the end (delta: 103.8MB). Free memory was 129.7MB in the beginning and 258.5MB in the end (delta: -128.8MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. [2022-01-31 23:17:34,543 INFO L158 Benchmark]: Boogie Preprocessor took 28.45ms. Allocated memory is still 287.3MB. Free memory was 258.5MB in the beginning and 257.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 23:17:34,545 INFO L158 Benchmark]: RCFGBuilder took 319.75ms. Allocated memory is still 287.3MB. Free memory was 257.0MB in the beginning and 243.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-01-31 23:17:34,545 INFO L158 Benchmark]: TraceAbstraction took 562.28ms. Allocated memory is still 287.3MB. Free memory was 242.8MB in the beginning and 214.5MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-01-31 23:17:34,551 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory is still 146.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 206.22ms. Allocated memory was 183.5MB in the beginning and 287.3MB in the end (delta: 103.8MB). Free memory was 129.7MB in the beginning and 258.5MB in the end (delta: -128.8MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.45ms. Allocated memory is still 287.3MB. Free memory was 258.5MB in the beginning and 257.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 319.75ms. Allocated memory is still 287.3MB. Free memory was 257.0MB in the beginning and 243.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 562.28ms. Allocated memory is still 287.3MB. Free memory was 242.8MB in the beginning and 214.5MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L30] long long *c = malloc(sizeof(long long)*N); [L32] i=0 [L32] COND FALSE !(i