/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s2liff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:14:11,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:14:11,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:14:11,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:14:11,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:14:11,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:14:11,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:14:11,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:14:11,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:14:11,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:14:11,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:14:11,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:14:11,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:14:11,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:14:11,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:14:11,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:14:11,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:14:11,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:14:11,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:14:11,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:14:11,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:14:11,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:14:11,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:14:11,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:14:11,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 14:14:11,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:14:11,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:14:11,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:14:11,678 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 14:14:11,719 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:14:11,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:14:11,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:14:11,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:14:11,722 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:14:11,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:14:11,722 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:14:11,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:14:11,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:14:11,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:14:11,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:14:11,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:14:11,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:14:11,725 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:14:11,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:14:11,726 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:14:11,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:14:11,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:14:11,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:14:11,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:14:11,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:14:11,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:14:11,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:14:11,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:14:11,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:14:11,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:14:11,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:14:11,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:14:11,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:14:11,729 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 -> log-additional-information=true; [2020-08-21 14:14:12,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:14:12,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:14:12,076 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:14:12,077 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:14:12,078 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:14:12,078 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2liff.c [2020-08-21 14:14:12,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e53c718/7076e3a7e248491390e8f8d5c1301d09/FLAGad61deb8e [2020-08-21 14:14:12,635 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:14:12,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s2liff.c [2020-08-21 14:14:12,645 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e53c718/7076e3a7e248491390e8f8d5c1301d09/FLAGad61deb8e [2020-08-21 14:14:13,003 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e53c718/7076e3a7e248491390e8f8d5c1301d09 [2020-08-21 14:14:13,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:14:13,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:14:13,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:14:13,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:14:13,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:14:13,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:14:13" (1/1) ... [2020-08-21 14:14:13,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe964b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:13, skipping insertion in model container [2020-08-21 14:14:13,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:14:13" (1/1) ... [2020-08-21 14:14:13,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:14:13,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:14:13,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:14:13,233 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:14:13,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:14:13,356 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:14:13,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:13 WrapperNode [2020-08-21 14:14:13,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:14:13,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:14:13,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:14:13,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:14:13,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:13" (1/1) ... [2020-08-21 14:14:13,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:13" (1/1) ... [2020-08-21 14:14:13,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:13" (1/1) ... [2020-08-21 14:14:13,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:13" (1/1) ... [2020-08-21 14:14:13,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:13" (1/1) ... [2020-08-21 14:14:13,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:13" (1/1) ... [2020-08-21 14:14:13,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:13" (1/1) ... [2020-08-21 14:14:13,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:14:13,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:14:13,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:14:13,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:14:13,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:13" (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 14:14:13,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:14:13,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:14:13,477 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 14:14:13,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 14:14:13,477 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:14:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:14:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 14:14:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 14:14:13,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 14:14:13,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:14:13,479 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:14:13,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:14:13,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:14:13,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:14:13,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:14:13,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:14:13,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:14:13,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:14:13,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:14:13,743 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:14:13,743 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-21 14:14:13,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:14:13 BoogieIcfgContainer [2020-08-21 14:14:13,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:14:13,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:14:13,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:14:13,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:14:13,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:14:13" (1/3) ... [2020-08-21 14:14:13,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc7a949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:14:13, skipping insertion in model container [2020-08-21 14:14:13,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:14:13" (2/3) ... [2020-08-21 14:14:13,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc7a949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:14:13, skipping insertion in model container [2020-08-21 14:14:13,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:14:13" (3/3) ... [2020-08-21 14:14:13,756 INFO L109 eAbstractionObserver]: Analyzing ICFG s2liff.c [2020-08-21 14:14:13,773 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:14:13,781 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:14:13,799 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:14:13,826 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:14:13,827 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:14:13,827 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:14:13,827 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:14:13,827 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:14:13,827 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:14:13,827 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:14:13,828 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:14:13,847 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-21 14:14:13,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 14:14:13,854 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:14:13,855 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] [2020-08-21 14:14:13,856 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:14:13,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:14:13,863 INFO L82 PathProgramCache]: Analyzing trace with hash -88121349, now seen corresponding path program 1 times [2020-08-21 14:14:13,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:14:13,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529003401] [2020-08-21 14:14:13,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:14:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:14,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:14:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:14,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:14:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:14,078 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 14:14:14,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529003401] [2020-08-21 14:14:14,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:14:14,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 14:14:14,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214081371] [2020-08-21 14:14:14,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 14:14:14,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:14:14,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 14:14:14,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:14:14,106 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-21 14:14:14,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:14:14,224 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-08-21 14:14:14,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 14:14:14,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-21 14:14:14,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:14:14,235 INFO L225 Difference]: With dead ends: 60 [2020-08-21 14:14:14,236 INFO L226 Difference]: Without dead ends: 28 [2020-08-21 14:14:14,240 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 14:14:14,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-21 14:14:14,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-21 14:14:14,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-21 14:14:14,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-08-21 14:14:14,278 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-08-21 14:14:14,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:14:14,279 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-08-21 14:14:14,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 14:14:14,279 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-08-21 14:14:14,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 14:14:14,280 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:14:14,280 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] [2020-08-21 14:14:14,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:14:14,281 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:14:14,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:14:14,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1099238599, now seen corresponding path program 1 times [2020-08-21 14:14:14,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:14:14,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172401890] [2020-08-21 14:14:14,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:14:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:14,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:14:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:14,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:14:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:14:14,412 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 14:14:14,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172401890] [2020-08-21 14:14:14,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:14:14,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 14:14:14,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010136852] [2020-08-21 14:14:14,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 14:14:14,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:14:14,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 14:14:14,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:14:14,417 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-08-21 14:14:14,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:14:14,580 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-08-21 14:14:14,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 14:14:14,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-08-21 14:14:14,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:14:14,582 INFO L225 Difference]: With dead ends: 48 [2020-08-21 14:14:14,582 INFO L226 Difference]: Without dead ends: 35 [2020-08-21 14:14:14,584 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 14:14:14,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-21 14:14:14,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-08-21 14:14:14,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-21 14:14:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-08-21 14:14:14,604 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-08-21 14:14:14,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:14:14,604 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-08-21 14:14:14,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 14:14:14,604 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-08-21 14:14:14,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 14:14:14,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:14:14,606 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] [2020-08-21 14:14:14,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:14:14,607 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:14:14,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:14:14,609 INFO L82 PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times [2020-08-21 14:14:14,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:14:14,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275554216] [2020-08-21 14:14:14,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:14:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:14:14,712 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:14:14,712 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:14:14,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:14:14,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:14:14 BoogieIcfgContainer [2020-08-21 14:14:14,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:14:14,744 INFO L168 Benchmark]: Toolchain (without parser) took 1729.30 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.4 MB in the beginning and 106.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:14,745 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-21 14:14:14,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.31 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.0 MB in the beginning and 181.8 MB in the end (delta: -78.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:14,747 INFO L168 Benchmark]: Boogie Preprocessor took 47.65 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 179.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:14,748 INFO L168 Benchmark]: RCFGBuilder took 342.53 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 161.7 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:14,749 INFO L168 Benchmark]: TraceAbstraction took 991.62 ms. Allocated memory is still 202.9 MB. Free memory was 161.7 MB in the beginning and 106.2 MB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2020-08-21 14:14:14,753 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 342.31 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.0 MB in the beginning and 181.8 MB in the end (delta: -78.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.65 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 179.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 342.53 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 161.7 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 991.62 ms. Allocated memory is still 202.9 MB. Free memory was 161.7 MB in the beginning and 106.2 MB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 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] sum[0] = N [L30] i=0 [L30] COND TRUE i