/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s22iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:25:03,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:25:03,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:25:03,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:25:03,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:25:03,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:25:03,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:25:03,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:25:03,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:25:03,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:25:03,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:25:03,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:25:03,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:25:03,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:25:03,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:25:03,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:25:03,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:25:03,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:25:03,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:25:03,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:25:03,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:25:03,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:25:03,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:25:03,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:25:03,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 20:25:03,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:25:03,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:25:03,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:25:03,510 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 [2020-08-18 20:25:03,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:25:03,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:25:03,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:25:03,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:25:03,554 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:25:03,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:25:03,555 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:25:03,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:25:03,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:25:03,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:25:03,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:25:03,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:25:03,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:25:03,557 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:25:03,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:25:03,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:25:03,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:25:03,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:25:03,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:25:03,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:25:03,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:25:03,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:25:03,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:25:03,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:25:03,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:25:03,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:25:03,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:25:03,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:25:03,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:25:03,560 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=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:25:03,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:25:03,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:25:03,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:25:03,858 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:25:03,859 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:25:03,860 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s22iff.c [2020-08-18 20:25:03,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b761e9bf/0c9c92c343964d96bd141779582caa88/FLAGb34207c23 [2020-08-18 20:25:04,413 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:25:04,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s22iff.c [2020-08-18 20:25:04,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b761e9bf/0c9c92c343964d96bd141779582caa88/FLAGb34207c23 [2020-08-18 20:25:04,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b761e9bf/0c9c92c343964d96bd141779582caa88 [2020-08-18 20:25:04,787 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:25:04,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:25:04,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:25:04,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:25:04,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:25:04,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:25:04" (1/1) ... [2020-08-18 20:25:04,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e852e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:04, skipping insertion in model container [2020-08-18 20:25:04,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:25:04" (1/1) ... [2020-08-18 20:25:04,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:25:04,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:25:05,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:25:05,041 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:25:05,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:25:05,176 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:25:05,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:05 WrapperNode [2020-08-18 20:25:05,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:25:05,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:25:05,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:25:05,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:25:05,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:05" (1/1) ... [2020-08-18 20:25:05,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:05" (1/1) ... [2020-08-18 20:25:05,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:05" (1/1) ... [2020-08-18 20:25:05,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:05" (1/1) ... [2020-08-18 20:25:05,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:05" (1/1) ... [2020-08-18 20:25:05,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:05" (1/1) ... [2020-08-18 20:25:05,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:05" (1/1) ... [2020-08-18 20:25:05,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:25:05,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:25:05,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:25:05,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:25:05,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:05" (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 [2020-08-18 20:25:05,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:25:05,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:25:05,294 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 20:25:05,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 20:25:05,294 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:25:05,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:25:05,295 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 20:25:05,295 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 20:25:05,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 20:25:05,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:25:05,295 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:25:05,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:25:05,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:25:05,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:25:05,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:25:05,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:25:05,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:25:05,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:25:05,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:25:05,588 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:25:05,588 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-18 20:25:05,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:25:05 BoogieIcfgContainer [2020-08-18 20:25:05,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:25:05,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:25:05,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:25:05,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:25:05,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:25:04" (1/3) ... [2020-08-18 20:25:05,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28693f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:25:05, skipping insertion in model container [2020-08-18 20:25:05,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:05" (2/3) ... [2020-08-18 20:25:05,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28693f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:25:05, skipping insertion in model container [2020-08-18 20:25:05,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:25:05" (3/3) ... [2020-08-18 20:25:05,602 INFO L109 eAbstractionObserver]: Analyzing ICFG s22iff.c [2020-08-18 20:25:05,615 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:25:05,623 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:25:05,661 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:25:05,688 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:25:05,688 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:25:05,688 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:25:05,689 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:25:05,689 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:25:05,689 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:25:05,689 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:25:05,689 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:25:05,714 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-08-18 20:25:05,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 20:25:05,721 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:25:05,723 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] [2020-08-18 20:25:05,723 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:25:05,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:25:05,728 INFO L82 PathProgramCache]: Analyzing trace with hash 2033030480, now seen corresponding path program 1 times [2020-08-18 20:25:05,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:25:05,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232111085] [2020-08-18 20:25:05,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:25:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:25:05,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:25:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:25:05,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:25:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:25:05,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:25:05,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232111085] [2020-08-18 20:25:05,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:25:05,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:25:05,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16607471] [2020-08-18 20:25:05,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:25:05,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:25:05,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:25:05,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:25:05,972 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-08-18 20:25:06,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:25:06,122 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-08-18 20:25:06,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:25:06,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-18 20:25:06,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:25:06,133 INFO L225 Difference]: With dead ends: 62 [2020-08-18 20:25:06,134 INFO L226 Difference]: Without dead ends: 29 [2020-08-18 20:25:06,138 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 [2020-08-18 20:25:06,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-18 20:25:06,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-18 20:25:06,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-18 20:25:06,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-08-18 20:25:06,183 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 23 [2020-08-18 20:25:06,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:25:06,184 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-08-18 20:25:06,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:25:06,184 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-08-18 20:25:06,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 20:25:06,186 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:25:06,186 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] [2020-08-18 20:25:06,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:25:06,187 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:25:06,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:25:06,187 INFO L82 PathProgramCache]: Analyzing trace with hash 706992569, now seen corresponding path program 1 times [2020-08-18 20:25:06,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:25:06,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115347939] [2020-08-18 20:25:06,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:25:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:25:06,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:25:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:25:06,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:25:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:25:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:25:06,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115347939] [2020-08-18 20:25:06,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:25:06,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:25:06,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43258432] [2020-08-18 20:25:06,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:25:06,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:25:06,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:25:06,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:25:06,351 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-08-18 20:25:06,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:25:06,492 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-08-18 20:25:06,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 20:25:06,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-08-18 20:25:06,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:25:06,494 INFO L225 Difference]: With dead ends: 51 [2020-08-18 20:25:06,494 INFO L226 Difference]: Without dead ends: 37 [2020-08-18 20:25:06,496 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 [2020-08-18 20:25:06,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-18 20:25:06,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-08-18 20:25:06,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-18 20:25:06,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-08-18 20:25:06,505 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-08-18 20:25:06,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:25:06,506 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-08-18 20:25:06,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:25:06,506 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-08-18 20:25:06,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-18 20:25:06,507 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:25:06,508 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] [2020-08-18 20:25:06,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:25:06,508 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:25:06,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:25:06,509 INFO L82 PathProgramCache]: Analyzing trace with hash 284203188, now seen corresponding path program 1 times [2020-08-18 20:25:06,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:25:06,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754942988] [2020-08-18 20:25:06,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:25:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:25:06,594 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:25:06,594 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:25:06,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:25:06,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:25:06 BoogieIcfgContainer [2020-08-18 20:25:06,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:25:06,638 INFO L168 Benchmark]: Toolchain (without parser) took 1846.96 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.5 MB in the beginning and 105.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 60.7 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:06,640 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 20:25:06,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.60 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 182.9 MB in the end (delta: -80.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:06,642 INFO L168 Benchmark]: Boogie Preprocessor took 43.93 ms. Allocated memory is still 204.5 MB. Free memory was 182.9 MB in the beginning and 180.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:06,644 INFO L168 Benchmark]: RCFGBuilder took 368.41 ms. Allocated memory is still 204.5 MB. Free memory was 180.6 MB in the beginning and 162.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:06,646 INFO L168 Benchmark]: TraceAbstraction took 1037.73 ms. Allocated memory is still 204.5 MB. Free memory was 162.0 MB in the beginning and 105.2 MB in the end (delta: 56.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:06,655 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 389.60 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 182.9 MB in the end (delta: -80.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.93 ms. Allocated memory is still 204.5 MB. Free memory was 182.9 MB in the beginning and 180.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 368.41 ms. Allocated memory is still 204.5 MB. Free memory was 180.6 MB in the beginning and 162.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1037.73 ms. Allocated memory is still 204.5 MB. Free memory was 162.0 MB in the beginning and 105.2 MB in the end (delta: 56.7 MB). Peak memory consumption was 56.7 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] = 1 [L30] i=0 [L30] COND TRUE i