/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/ss1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:25:13,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:25:13,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:25:13,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:25:13,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:25:13,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:25:13,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:25:13,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:25:13,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:25:13,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:25:13,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:25:13,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:25:13,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:25:13,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:25:13,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:25:13,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:25:13,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:25:13,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:25:13,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:25:13,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:25:13,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:25:13,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:25:13,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:25:13,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:25:13,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 20:25:13,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:25:13,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:25:13,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:25:13,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:25:13,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:25:13,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:25:13,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:25:13,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:25:13,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:25:13,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:25:13,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:25:13,644 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 20:25:13,679 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:25:13,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:25:13,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:25:13,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:25:13,682 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:25:13,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:25:13,682 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:25:13,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:25:13,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:25:13,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:25:13,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:25:13,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:25:13,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:25:13,685 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:25:13,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:25:13,685 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:25:13,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:25:13,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:25:13,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:25:13,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:25:13,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:25:13,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:25:13,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:25:13,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:25:13,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:25:13,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:25:13,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:25:13,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:25:13,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:25:13,688 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 20:25:13,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:25:14,009 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:25:14,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:25:14,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:25:14,015 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:25:14,015 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss1f.c [2020-08-18 20:25:14,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae5435bad/5cf9064d5f2847fd9154bdb6e2436db2/FLAGa28f08672 [2020-08-18 20:25:14,511 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:25:14,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss1f.c [2020-08-18 20:25:14,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae5435bad/5cf9064d5f2847fd9154bdb6e2436db2/FLAGa28f08672 [2020-08-18 20:25:14,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae5435bad/5cf9064d5f2847fd9154bdb6e2436db2 [2020-08-18 20:25:14,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:25:14,898 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:25:14,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:25:14,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:25:14,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:25:14,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:25:14" (1/1) ... [2020-08-18 20:25:14,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6670e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:14, skipping insertion in model container [2020-08-18 20:25:14,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:25:14" (1/1) ... [2020-08-18 20:25:14,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:25:14,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:25:15,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:25:15,117 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:25:15,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:25:15,154 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:25:15,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:15 WrapperNode [2020-08-18 20:25:15,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:25:15,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:25:15,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:25:15,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:25:15,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:15" (1/1) ... [2020-08-18 20:25:15,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:15" (1/1) ... [2020-08-18 20:25:15,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:15" (1/1) ... [2020-08-18 20:25:15,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:15" (1/1) ... [2020-08-18 20:25:15,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:15" (1/1) ... [2020-08-18 20:25:15,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:15" (1/1) ... [2020-08-18 20:25:15,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:15" (1/1) ... [2020-08-18 20:25:15,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:25:15,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:25:15,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:25:15,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:25:15,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:15" (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 20:25:15,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:25:15,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:25:15,326 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 20:25:15,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 20:25:15,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:25:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:25:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 20:25:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 20:25:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 20:25:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:25:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:25:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:25:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:25:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:25:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:25:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:25:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:25:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:25:15,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:25:15,579 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:25:15,580 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 20:25:15,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:25:15 BoogieIcfgContainer [2020-08-18 20:25:15,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:25:15,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:25:15,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:25:15,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:25:15,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:25:14" (1/3) ... [2020-08-18 20:25:15,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498ded24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:25:15, skipping insertion in model container [2020-08-18 20:25:15,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:25:15" (2/3) ... [2020-08-18 20:25:15,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498ded24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:25:15, skipping insertion in model container [2020-08-18 20:25:15,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:25:15" (3/3) ... [2020-08-18 20:25:15,593 INFO L109 eAbstractionObserver]: Analyzing ICFG ss1f.c [2020-08-18 20:25:15,604 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:25:15,611 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:25:15,627 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:25:15,653 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:25:15,653 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:25:15,654 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:25:15,654 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:25:15,654 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:25:15,654 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:25:15,654 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:25:15,654 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:25:15,674 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-18 20:25:15,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 20:25:15,681 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:25:15,681 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] [2020-08-18 20:25:15,682 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:25:15,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:25:15,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-08-18 20:25:15,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:25:15,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901064806] [2020-08-18 20:25:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:25:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:25:15,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:25:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:25:15,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:25:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:25:15,896 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 20:25:15,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901064806] [2020-08-18 20:25:15,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:25:15,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:25:15,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168858427] [2020-08-18 20:25:15,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:25:15,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:25:15,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:25:15,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:25:15,921 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-18 20:25:16,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:25:16,044 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-18 20:25:16,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:25:16,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-08-18 20:25:16,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:25:16,055 INFO L225 Difference]: With dead ends: 64 [2020-08-18 20:25:16,055 INFO L226 Difference]: Without dead ends: 30 [2020-08-18 20:25:16,059 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 20:25:16,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-18 20:25:16,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-18 20:25:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-18 20:25:16,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-18 20:25:16,101 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-08-18 20:25:16,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:25:16,102 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-18 20:25:16,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:25:16,102 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-18 20:25:16,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 20:25:16,104 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:25:16,104 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] [2020-08-18 20:25:16,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:25:16,105 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:25:16,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:25:16,106 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-08-18 20:25:16,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:25:16,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213018581] [2020-08-18 20:25:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:25:16,132 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-18 20:25:16,132 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-18 20:25:16,133 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:25:16,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:25:16,154 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-18 20:25:16,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:25:16 BoogieIcfgContainer [2020-08-18 20:25:16,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:25:16,157 INFO L168 Benchmark]: Toolchain (without parser) took 1258.38 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 102.5 MB in the beginning and 126.4 MB in the end (delta: -23.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:16,158 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 20:25:16,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.79 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 91.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:16,160 INFO L168 Benchmark]: Boogie Preprocessor took 104.29 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 91.5 MB in the beginning and 177.5 MB in the end (delta: -86.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:16,161 INFO L168 Benchmark]: RCFGBuilder took 324.80 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 159.1 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:16,162 INFO L168 Benchmark]: TraceAbstraction took 568.87 ms. Allocated memory is still 200.3 MB. Free memory was 159.1 MB in the beginning and 126.4 MB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. [2020-08-18 20:25:16,166 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.79 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 91.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.29 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 91.5 MB in the beginning and 177.5 MB in the end (delta: -86.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 324.80 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 159.1 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 568.87 ms. Allocated memory is still 200.3 MB. Free memory was 159.1 MB in the beginning and 126.4 MB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND FALSE !(i