/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/ifcompf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:16:33,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:16:33,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:16:33,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:16:33,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:16:33,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:16:33,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:16:33,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:16:33,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:16:33,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:16:33,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:16:33,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:16:33,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:16:33,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:16:33,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:16:33,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:16:33,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:16:33,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:16:33,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:16:33,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:16:33,234 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 23:16:33,246 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:16:33,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:16:33,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:16:33,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:16:33,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:16:33,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:16:33,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:16:33,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:16:33,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:16:33,249 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:16:33,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:16:33,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:16:33,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:16:33,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:16:33,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:16:33,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:16:33,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:16:33,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:16:33,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:16:33,250 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-01-31 23:16:33,250 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:16:33,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:16:33,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:16:33,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:16:33,506 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:16:33,511 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:16:33,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifcompf.c [2022-01-31 23:16:33,574 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1d458ef7/d3a0ed16f43c448fa20783530af99d63/FLAGefccceef8 [2022-01-31 23:16:33,888 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:16:33,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifcompf.c [2022-01-31 23:16:33,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1d458ef7/d3a0ed16f43c448fa20783530af99d63/FLAGefccceef8 [2022-01-31 23:16:33,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1d458ef7/d3a0ed16f43c448fa20783530af99d63 [2022-01-31 23:16:33,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:16:33,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:16:33,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:16:33,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:16:33,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:16:33,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:16:33" (1/1) ... [2022-01-31 23:16:33,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f91db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:33, skipping insertion in model container [2022-01-31 23:16:33,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:16:33" (1/1) ... [2022-01-31 23:16:33,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:16:33,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:16:34,046 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/ifcompf.c[590,603] [2022-01-31 23:16:34,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:16:34,100 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:16:34,112 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/ifcompf.c[590,603] [2022-01-31 23:16:34,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:16:34,150 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:16:34,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:34 WrapperNode [2022-01-31 23:16:34,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:16:34,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:16:34,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:16:34,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:16:34,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:34" (1/1) ... [2022-01-31 23:16:34,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:34" (1/1) ... [2022-01-31 23:16:34,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:34" (1/1) ... [2022-01-31 23:16:34,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:34" (1/1) ... [2022-01-31 23:16:34,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:34" (1/1) ... [2022-01-31 23:16:34,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:34" (1/1) ... [2022-01-31 23:16:34,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:34" (1/1) ... [2022-01-31 23:16:34,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:16:34,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:16:34,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:16:34,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:16:34,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:34" (1/1) ... [2022-01-31 23:16:34,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:16:34,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:16:34,207 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 23:16:34,213 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 23:16:34,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:16:34,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:16:34,238 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:16:34,238 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 23:16:34,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 23:16:34,238 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:16:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:16:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:16:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:16:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:16:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 23:16:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 23:16:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 23:16:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 23:16:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:16:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 23:16:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:16:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:16:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:16:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:16:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:16:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:16:34,295 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:16:34,296 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:16:34,428 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:16:34,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:16:34,433 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-31 23:16:34,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:16:34 BoogieIcfgContainer [2022-01-31 23:16:34,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:16:34,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:16:34,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:16:34,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:16:34,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:16:33" (1/3) ... [2022-01-31 23:16:34,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f91072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:16:34, skipping insertion in model container [2022-01-31 23:16:34,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:16:34" (2/3) ... [2022-01-31 23:16:34,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f91072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:16:34, skipping insertion in model container [2022-01-31 23:16:34,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:16:34" (3/3) ... [2022-01-31 23:16:34,456 INFO L111 eAbstractionObserver]: Analyzing ICFG ifcompf.c [2022-01-31 23:16:34,460 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:16:34,460 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:16:34,519 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:16:34,534 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 23:16:34,535 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:16:34,550 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 23:16:34,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-31 23:16:34,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:16:34,570 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 23:16:34,571 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:16:34,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:16:34,580 INFO L85 PathProgramCache]: Analyzing trace with hash 488960429, now seen corresponding path program 1 times [2022-01-31 23:16:34,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:16:34,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834139478] [2022-01-31 23:16:34,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:16:34,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:16:34,653 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:16:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:16:34,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:16:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:16:34,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 23:16:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:16:34,850 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 23:16:34,851 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:16:34,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834139478] [2022-01-31 23:16:34,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [834139478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:16:34,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:16:34,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 23:16:34,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134269795] [2022-01-31 23:16:34,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:16:34,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 23:16:34,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:16:34,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 23:16:34,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 23:16:34,886 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 23:16:34,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:16:34,985 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2022-01-31 23:16:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 23:16:34,988 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 23:16:34,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:16:34,998 INFO L225 Difference]: With dead ends: 70 [2022-01-31 23:16:34,999 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 23:16:35,004 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 23:16:35,009 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 23:16:35,010 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 23:16:35,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 23:16:35,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-01-31 23:16:35,051 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 23:16:35,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-01-31 23:16:35,054 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 24 [2022-01-31 23:16:35,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:16:35,055 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-01-31 23:16:35,055 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 23:16:35,056 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-01-31 23:16:35,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-31 23:16:35,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:16:35,057 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 23:16:35,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:16:35,058 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:16:35,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:16:35,059 INFO L85 PathProgramCache]: Analyzing trace with hash -969750770, now seen corresponding path program 1 times [2022-01-31 23:16:35,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:16:35,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075409014] [2022-01-31 23:16:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:16:35,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:16:35,070 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:16:35,096 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 23:16:35,097 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 23:16:35,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 23:16:35,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:16:35,107 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 23:16:35,109 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 23:16:35,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:16:35 BoogieIcfgContainer [2022-01-31 23:16:35,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 23:16:35,120 INFO L158 Benchmark]: Toolchain (without parser) took 1213.34ms. Allocated memory was 189.8MB in the beginning and 252.7MB in the end (delta: 62.9MB). Free memory was 133.2MB in the beginning and 180.5MB in the end (delta: -47.3MB). Peak memory consumption was 15.3MB. Max. memory is 8.0GB. [2022-01-31 23:16:35,120 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:16:35,121 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.57ms. Allocated memory was 189.8MB in the beginning and 252.7MB in the end (delta: 62.9MB). Free memory was 132.9MB in the beginning and 225.1MB in the end (delta: -92.2MB). Peak memory consumption was 12.7MB. Max. memory is 8.0GB. [2022-01-31 23:16:35,121 INFO L158 Benchmark]: Boogie Preprocessor took 24.78ms. Allocated memory is still 252.7MB. Free memory was 225.1MB in the beginning and 223.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 23:16:35,122 INFO L158 Benchmark]: RCFGBuilder took 258.34ms. Allocated memory is still 252.7MB. Free memory was 223.5MB in the beginning and 209.9MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-01-31 23:16:35,122 INFO L158 Benchmark]: TraceAbstraction took 667.82ms. Allocated memory is still 252.7MB. Free memory was 209.3MB in the beginning and 180.5MB in the end (delta: 28.8MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-01-31 23:16:35,124 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 189.8MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 239.57ms. Allocated memory was 189.8MB in the beginning and 252.7MB in the end (delta: 62.9MB). Free memory was 132.9MB in the beginning and 225.1MB in the end (delta: -92.2MB). Peak memory consumption was 12.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.78ms. Allocated memory is still 252.7MB. Free memory was 225.1MB in the beginning and 223.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 258.34ms. Allocated memory is still 252.7MB. Free memory was 223.5MB in the beginning and 209.9MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 667.82ms. Allocated memory is still 252.7MB. Free memory was 209.3MB in the beginning and 180.5MB in the end (delta: 28.8MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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