/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/indp5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:38:24,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:38:24,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:38:24,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:38:24,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:38:24,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:38:24,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:38:24,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:38:24,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:38:24,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:38:24,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:38:24,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:38:24,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:38:24,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:38:24,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:38:24,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:38:24,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:38:24,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:38:24,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:38:24,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:38:24,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:38:24,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:38:24,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:38:24,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:38:24,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 11:38:24,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 11:38:24,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 11:38:24,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 11:38:24,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 11:38:24,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 11:38:24,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 11:38:24,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 11:38:24,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 11:38:24,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:38:24,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:38:24,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:38:24,248 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 11:38:24,269 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:38:24,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:38:24,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:38:24,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:38:24,272 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:38:24,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:38:24,272 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:38:24,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:38:24,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:38:24,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:38:24,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:38:24,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:38:24,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:38:24,275 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:38:24,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:38:24,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:38:24,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:38:24,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:38:24,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:38:24,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:38:24,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:38:24,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:38:24,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:38:24,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:38:24,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:38:24,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:38:24,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:38:24,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:38:24,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:38:24,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 11:38:24,617 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:38:24,634 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:38:24,638 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:38:24,640 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:38:24,640 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:38:24,641 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp5f.c [2020-07-21 11:38:24,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8e51b5df/2d53422cb9f54425a7fa33cb45b429ad/FLAG642c0611f [2020-07-21 11:38:25,167 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:38:25,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp5f.c [2020-07-21 11:38:25,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8e51b5df/2d53422cb9f54425a7fa33cb45b429ad/FLAG642c0611f [2020-07-21 11:38:25,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8e51b5df/2d53422cb9f54425a7fa33cb45b429ad [2020-07-21 11:38:25,579 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:38:25,582 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:38:25,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:38:25,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:38:25,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:38:25,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:38:25" (1/1) ... [2020-07-21 11:38:25,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f864992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:25, skipping insertion in model container [2020-07-21 11:38:25,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:38:25" (1/1) ... [2020-07-21 11:38:25,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:38:25,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:38:25,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:38:25,807 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:38:25,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:38:25,844 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:38:25,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:25 WrapperNode [2020-07-21 11:38:25,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:38:25,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:38:25,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:38:25,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:38:25,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:25" (1/1) ... [2020-07-21 11:38:25,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:25" (1/1) ... [2020-07-21 11:38:25,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:25" (1/1) ... [2020-07-21 11:38:25,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:25" (1/1) ... [2020-07-21 11:38:25,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:25" (1/1) ... [2020-07-21 11:38:25,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:25" (1/1) ... [2020-07-21 11:38:25,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:25" (1/1) ... [2020-07-21 11:38:25,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:38:25,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:38:25,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:38:25,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:38:25,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:38:26,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:38:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:38:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 11:38:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 11:38:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:38:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:38:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 11:38:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 11:38:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 11:38:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:38:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 11:38:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:38:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 11:38:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 11:38:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 11:38:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 11:38:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 11:38:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:38:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:38:26,408 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:38:26,409 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 11:38:26,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:38:26 BoogieIcfgContainer [2020-07-21 11:38:26,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:38:26,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:38:26,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:38:26,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:38:26,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:38:25" (1/3) ... [2020-07-21 11:38:26,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b3f122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:38:26, skipping insertion in model container [2020-07-21 11:38:26,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:25" (2/3) ... [2020-07-21 11:38:26,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b3f122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:38:26, skipping insertion in model container [2020-07-21 11:38:26,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:38:26" (3/3) ... [2020-07-21 11:38:26,420 INFO L109 eAbstractionObserver]: Analyzing ICFG indp5f.c [2020-07-21 11:38:26,430 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:38:26,437 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:38:26,450 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:38:26,472 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:38:26,472 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:38:26,472 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:38:26,472 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:38:26,472 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:38:26,472 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:38:26,472 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:38:26,473 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:38:26,487 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-21 11:38:26,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 11:38:26,493 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:38:26,494 INFO L422 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, 1, 1, 1] [2020-07-21 11:38:26,495 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:38:26,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:38:26,500 INFO L82 PathProgramCache]: Analyzing trace with hash -976607933, now seen corresponding path program 1 times [2020-07-21 11:38:26,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:38:26,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479162116] [2020-07-21 11:38:26,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:38:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:38:26,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 11:38:26,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:38:26,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:38:26,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:38:26,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479162116] [2020-07-21 11:38:26,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:38:26,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 11:38:26,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037682812] [2020-07-21 11:38:26,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 11:38:26,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:38:26,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 11:38:26,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 11:38:26,648 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-07-21 11:38:26,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:38:26,675 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2020-07-21 11:38:26,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 11:38:26,676 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2020-07-21 11:38:26,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:38:26,683 INFO L225 Difference]: With dead ends: 70 [2020-07-21 11:38:26,684 INFO L226 Difference]: Without dead ends: 33 [2020-07-21 11:38:26,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 11:38:26,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-21 11:38:26,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-21 11:38:26,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-21 11:38:26,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-07-21 11:38:26,722 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 27 [2020-07-21 11:38:26,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:38:26,723 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-07-21 11:38:26,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 11:38:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-07-21 11:38:26,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 11:38:26,724 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:38:26,724 INFO L422 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, 1, 1, 1] [2020-07-21 11:38:26,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:38:26,926 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:38:26,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:38:26,928 INFO L82 PathProgramCache]: Analyzing trace with hash -714487667, now seen corresponding path program 1 times [2020-07-21 11:38:26,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:38:26,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344914662] [2020-07-21 11:38:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:38:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:38:26,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 11:38:27,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:38:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:38:27,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:38:27,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344914662] [2020-07-21 11:38:27,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:38:27,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:38:27,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350492372] [2020-07-21 11:38:27,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:38:27,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:38:27,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:38:27,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:38:27,051 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-07-21 11:38:27,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:38:27,146 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-07-21 11:38:27,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:38:27,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-07-21 11:38:27,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:38:27,148 INFO L225 Difference]: With dead ends: 61 [2020-07-21 11:38:27,148 INFO L226 Difference]: Without dead ends: 43 [2020-07-21 11:38:27,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:38:27,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-21 11:38:27,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2020-07-21 11:38:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-21 11:38:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-07-21 11:38:27,158 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 27 [2020-07-21 11:38:27,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:38:27,158 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-07-21 11:38:27,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:38:27,159 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-07-21 11:38:27,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-21 11:38:27,160 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:38:27,160 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:38:27,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:38:27,374 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:38:27,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:38:27,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1064141225, now seen corresponding path program 1 times [2020-07-21 11:38:27,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:38:27,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973786162] [2020-07-21 11:38:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:38:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 11:38:27,456 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 11:38:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 11:38:27,488 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 11:38:27,525 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 11:38:27,526 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 11:38:27,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:38:27,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:38:27 BoogieIcfgContainer [2020-07-21 11:38:27,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:38:27,794 INFO L168 Benchmark]: Toolchain (without parser) took 2212.14 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 103.6 MB in the beginning and 95.9 MB in the end (delta: 7.7 MB). Peak memory consumption was 70.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:38:27,795 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 11:38:27,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.02 ms. Allocated memory is still 138.9 MB. Free memory was 103.2 MB in the beginning and 92.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-21 11:38:27,797 INFO L168 Benchmark]: Boogie Preprocessor took 140.33 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 179.2 MB in the end (delta: -86.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-21 11:38:27,798 INFO L168 Benchmark]: RCFGBuilder took 426.92 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 160.2 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-07-21 11:38:27,799 INFO L168 Benchmark]: TraceAbstraction took 1374.96 ms. Allocated memory is still 201.9 MB. Free memory was 160.2 MB in the beginning and 95.9 MB in the end (delta: 64.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. [2020-07-21 11:38:27,803 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 262.02 ms. Allocated memory is still 138.9 MB. Free memory was 103.2 MB in the beginning and 92.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.33 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 179.2 MB in the end (delta: -86.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 426.92 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 160.2 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1374.96 ms. Allocated memory is still 201.9 MB. Free memory was 160.2 MB in the beginning and 95.9 MB in the end (delta: 64.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=5, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long sum[1]; [L29] sum[0] = 1 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i