/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ms3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:17:33,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:17:33,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:17:33,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:17:33,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:17:33,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:17:33,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:17:33,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:17:33,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:17:33,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:17:33,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:17:33,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:17:33,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:17:33,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:17:33,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:17:33,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:17:33,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:17:33,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:17:33,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:17:33,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:17:33,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:17:33,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:17:33,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:17:33,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:17:33,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 22:17:33,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:17:33,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:17:33,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:17:33,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 22:17:33,467 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:17:33,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:17:33,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:17:33,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:17:33,469 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:17:33,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:17:33,469 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:17:33,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:17:33,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:17:33,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:17:33,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:17:33,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:17:33,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:17:33,472 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:17:33,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:17:33,473 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:17:33,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:17:33,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:17:33,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:17:33,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:17:33,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:17:33,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:17:33,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:17:33,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:17:33,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:17:33,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:17:33,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:17:33,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:17:33,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:17:33,476 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:17:33,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:17:33,821 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:17:33,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:17:33,831 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:17:33,832 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:17:33,833 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms3f.c [2020-08-21 22:17:33,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df167d631/bebfa77b3e8c47139d2923e762d53454/FLAG0a07040e3 [2020-08-21 22:17:34,340 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:17:34,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ms3f.c [2020-08-21 22:17:34,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df167d631/bebfa77b3e8c47139d2923e762d53454/FLAG0a07040e3 [2020-08-21 22:17:34,714 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df167d631/bebfa77b3e8c47139d2923e762d53454 [2020-08-21 22:17:34,722 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:17:34,724 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:17:34,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:17:34,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:17:34,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:17:34,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:17:34" (1/1) ... [2020-08-21 22:17:34,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44406637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:34, skipping insertion in model container [2020-08-21 22:17:34,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:17:34" (1/1) ... [2020-08-21 22:17:34,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:17:34,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:17:34,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:17:34,995 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:17:35,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:17:35,035 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:17:35,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:35 WrapperNode [2020-08-21 22:17:35,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:17:35,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:17:35,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:17:35,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:17:35,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:35" (1/1) ... [2020-08-21 22:17:35,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:35" (1/1) ... [2020-08-21 22:17:35,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:35" (1/1) ... [2020-08-21 22:17:35,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:35" (1/1) ... [2020-08-21 22:17:35,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:35" (1/1) ... [2020-08-21 22:17:35,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:35" (1/1) ... [2020-08-21 22:17:35,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:35" (1/1) ... [2020-08-21 22:17:35,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:17:35,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:17:35,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:17:35,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:17:35,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-21 22:17:35,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:17:35,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:17:35,248 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 22:17:35,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 22:17:35,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:17:35,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:17:35,249 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 22:17:35,249 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 22:17:35,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 22:17:35,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:17:35,249 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:17:35,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:17:35,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:17:35,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:17:35,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:17:35,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:17:35,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:17:35,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:17:35,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:17:35,552 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:17:35,553 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-21 22:17:35,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:17:35 BoogieIcfgContainer [2020-08-21 22:17:35,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:17:35,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:17:35,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:17:35,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:17:35,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:17:34" (1/3) ... [2020-08-21 22:17:35,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d742884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:17:35, skipping insertion in model container [2020-08-21 22:17:35,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:17:35" (2/3) ... [2020-08-21 22:17:35,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d742884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:17:35, skipping insertion in model container [2020-08-21 22:17:35,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:17:35" (3/3) ... [2020-08-21 22:17:35,568 INFO L109 eAbstractionObserver]: Analyzing ICFG ms3f.c [2020-08-21 22:17:35,576 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:17:35,582 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:17:35,597 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:17:35,615 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:17:35,616 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:17:35,616 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:17:35,616 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:17:35,616 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:17:35,616 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:17:35,616 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:17:35,616 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:17:35,633 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-21 22:17:35,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 22:17:35,638 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:17:35,638 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] [2020-08-21 22:17:35,639 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:17:35,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:17:35,645 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-08-21 22:17:35,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:17:35,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972341787] [2020-08-21 22:17:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:17:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:35,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:17:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:35,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:17:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:35,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:17:35,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972341787] [2020-08-21 22:17:35,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:17:35,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:17:35,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958545562] [2020-08-21 22:17:35,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:17:35,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:17:35,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:17:35,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:17:35,884 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-21 22:17:36,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:17:36,009 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-08-21 22:17:36,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:17:36,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 22:17:36,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:17:36,019 INFO L225 Difference]: With dead ends: 54 [2020-08-21 22:17:36,020 INFO L226 Difference]: Without dead ends: 25 [2020-08-21 22:17:36,023 INFO L675 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 [2020-08-21 22:17:36,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-21 22:17:36,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-21 22:17:36,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-21 22:17:36,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-21 22:17:36,063 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-08-21 22:17:36,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:17:36,064 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-21 22:17:36,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:17:36,064 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-21 22:17:36,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 22:17:36,065 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:17:36,066 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] [2020-08-21 22:17:36,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:17:36,066 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:17:36,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:17:36,067 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-08-21 22:17:36,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:17:36,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342976492] [2020-08-21 22:17:36,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:17:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:36,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:17:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:36,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:17:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:17:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:17:36,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342976492] [2020-08-21 22:17:36,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:17:36,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:17:36,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807966162] [2020-08-21 22:17:36,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:17:36,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:17:36,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:17:36,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:17:36,208 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-08-21 22:17:36,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:17:36,331 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-08-21 22:17:36,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 22:17:36,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 22:17:36,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:17:36,334 INFO L225 Difference]: With dead ends: 40 [2020-08-21 22:17:36,334 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 22:17:36,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:17:36,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 22:17:36,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-08-21 22:17:36,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 22:17:36,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-08-21 22:17:36,344 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2020-08-21 22:17:36,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:17:36,344 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-08-21 22:17:36,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:17:36,344 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-08-21 22:17:36,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 22:17:36,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:17:36,346 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] [2020-08-21 22:17:36,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:17:36,346 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:17:36,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:17:36,347 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-08-21 22:17:36,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:17:36,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223828826] [2020-08-21 22:17:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:17:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:17:36,390 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:17:36,391 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:17:36,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:17:36,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:17:36 BoogieIcfgContainer [2020-08-21 22:17:36,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:17:36,415 INFO L168 Benchmark]: Toolchain (without parser) took 1689.78 ms. Allocated memory was 142.1 MB in the beginning and 204.5 MB in the end (delta: 62.4 MB). Free memory was 105.6 MB in the beginning and 113.1 MB in the end (delta: -7.5 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2020-08-21 22:17:36,416 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 22:17:36,417 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.01 ms. Allocated memory is still 142.1 MB. Free memory was 105.4 MB in the beginning and 94.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:17:36,418 INFO L168 Benchmark]: Boogie Preprocessor took 122.95 ms. Allocated memory was 142.1 MB in the beginning and 204.5 MB in the end (delta: 62.4 MB). Free memory was 94.9 MB in the beginning and 181.9 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:17:36,419 INFO L168 Benchmark]: RCFGBuilder took 395.38 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 165.6 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-08-21 22:17:36,420 INFO L168 Benchmark]: TraceAbstraction took 854.02 ms. Allocated memory is still 204.5 MB. Free memory was 164.9 MB in the beginning and 113.1 MB in the end (delta: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2020-08-21 22:17:36,424 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 313.01 ms. Allocated memory is still 142.1 MB. Free memory was 105.4 MB in the beginning and 94.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.95 ms. Allocated memory was 142.1 MB in the beginning and 204.5 MB in the end (delta: 62.4 MB). Free memory was 94.9 MB in the beginning and 181.9 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.38 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 165.6 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 854.02 ms. Allocated memory is still 204.5 MB. Free memory was 164.9 MB in the beginning and 113.1 MB in the end (delta: 51.8 MB). Peak memory consumption was 51.8 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; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i 2*N) [L13] COND TRUE !(cond) [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 39 SDslu, 11 SDs, 0 SdLazy, 64 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1480 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...