/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sina2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:53:12,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:53:12,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:53:12,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:53:12,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:53:12,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:53:12,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:53:12,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:53:12,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:53:12,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:53:12,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:53:12,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:53:12,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:53:12,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:53:12,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:53:12,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:53:12,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:53:12,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:53:12,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:53:12,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:53:12,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:53:12,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:53:12,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:53:12,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:53:12,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:53:12,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:53:12,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:53:12,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:53:12,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:53:12,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:53:12,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:53:12,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:53:12,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:53:12,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:53:12,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:53:12,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:53:12,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:53:12,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:53:12,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:53:12,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:53:12,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:53:12,828 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 [2020-08-19 02:53:12,869 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:53:12,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:53:12,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:53:12,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:53:12,872 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:53:12,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:53:12,873 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:53:12,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:53:12,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:53:12,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:53:12,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:53:12,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:53:12,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:53:12,875 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:53:12,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:53:12,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:53:12,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:53:12,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:53:12,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:53:12,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:53:12,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:53:12,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:53:12,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:53:12,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:53:12,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:53:12,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:53:12,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:53:12,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:53:12,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:53:12,878 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=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:53:13,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:53:13,229 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:53:13,232 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:53:13,234 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:53:13,235 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:53:13,236 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina2f.c [2020-08-19 02:53:13,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5751f862/d6437dfd73624d55a5b1165547a6683c/FLAGdfd342ac5 [2020-08-19 02:53:13,783 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:53:13,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina2f.c [2020-08-19 02:53:13,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5751f862/d6437dfd73624d55a5b1165547a6683c/FLAGdfd342ac5 [2020-08-19 02:53:14,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5751f862/d6437dfd73624d55a5b1165547a6683c [2020-08-19 02:53:14,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:53:14,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:53:14,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:53:14,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:53:14,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:53:14,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:53:14" (1/1) ... [2020-08-19 02:53:14,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54535c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:14, skipping insertion in model container [2020-08-19 02:53:14,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:53:14" (1/1) ... [2020-08-19 02:53:14,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:53:14,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:53:14,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:53:14,407 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:53:14,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:53:14,528 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:53:14,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:14 WrapperNode [2020-08-19 02:53:14,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:53:14,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:53:14,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:53:14,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:53:14,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:14" (1/1) ... [2020-08-19 02:53:14,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:14" (1/1) ... [2020-08-19 02:53:14,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:14" (1/1) ... [2020-08-19 02:53:14,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:14" (1/1) ... [2020-08-19 02:53:14,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:14" (1/1) ... [2020-08-19 02:53:14,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:14" (1/1) ... [2020-08-19 02:53:14,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:14" (1/1) ... [2020-08-19 02:53:14,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:53:14,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:53:14,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:53:14,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:53:14,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:14" (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 [2020-08-19 02:53:14,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:53:14,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:53:14,641 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 02:53:14,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 02:53:14,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:53:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:53:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 02:53:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 02:53:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 02:53:14,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:53:14,644 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:53:14,644 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:53:14,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:53:14,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:53:14,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:53:14,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:53:14,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:53:14,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:53:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:53:14,914 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:53:14,914 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 02:53:14,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:53:14 BoogieIcfgContainer [2020-08-19 02:53:14,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:53:14,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:53:14,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:53:14,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:53:14,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:53:14" (1/3) ... [2020-08-19 02:53:14,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519a3ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:53:14, skipping insertion in model container [2020-08-19 02:53:14,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:14" (2/3) ... [2020-08-19 02:53:14,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519a3ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:53:14, skipping insertion in model container [2020-08-19 02:53:14,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:53:14" (3/3) ... [2020-08-19 02:53:14,928 INFO L109 eAbstractionObserver]: Analyzing ICFG sina2f.c [2020-08-19 02:53:14,940 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:53:14,948 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:53:14,965 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:53:15,022 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:53:15,022 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:53:15,023 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:53:15,028 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:53:15,028 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:53:15,028 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:53:15,029 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:53:15,029 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:53:15,059 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-19 02:53:15,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 02:53:15,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:53:15,067 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] [2020-08-19 02:53:15,067 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:53:15,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:53:15,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-08-19 02:53:15,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:53:15,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873227070] [2020-08-19 02:53:15,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:53:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:15,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:53:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:15,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:53:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:53:15,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873227070] [2020-08-19 02:53:15,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:53:15,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:53:15,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264261765] [2020-08-19 02:53:15,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:53:15,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:53:15,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:53:15,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:53:15,327 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-19 02:53:15,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:53:15,459 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-19 02:53:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:53:15,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-19 02:53:15,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:53:15,478 INFO L225 Difference]: With dead ends: 64 [2020-08-19 02:53:15,478 INFO L226 Difference]: Without dead ends: 32 [2020-08-19 02:53:15,487 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 [2020-08-19 02:53:15,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-19 02:53:15,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-08-19 02:53:15,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-19 02:53:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-19 02:53:15,526 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-08-19 02:53:15,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:53:15,527 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-19 02:53:15,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:53:15,527 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-19 02:53:15,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 02:53:15,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:53:15,529 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] [2020-08-19 02:53:15,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:53:15,529 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:53:15,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:53:15,530 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-08-19 02:53:15,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:53:15,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746315755] [2020-08-19 02:53:15,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:53:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:15,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:53:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:15,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:53:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:53:15,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746315755] [2020-08-19 02:53:15,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:53:15,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:53:15,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945536570] [2020-08-19 02:53:15,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:53:15,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:53:15,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:53:15,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:53:15,651 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2020-08-19 02:53:15,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:53:15,803 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-08-19 02:53:15,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 02:53:15,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-08-19 02:53:15,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:53:15,808 INFO L225 Difference]: With dead ends: 59 [2020-08-19 02:53:15,808 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 02:53:15,809 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 [2020-08-19 02:53:15,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 02:53:15,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-08-19 02:53:15,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-19 02:53:15,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-08-19 02:53:15,824 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2020-08-19 02:53:15,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:53:15,825 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-08-19 02:53:15,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:53:15,825 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-08-19 02:53:15,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 02:53:15,826 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:53:15,827 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] [2020-08-19 02:53:15,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:53:15,827 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:53:15,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:53:15,828 INFO L82 PathProgramCache]: Analyzing trace with hash -191015719, now seen corresponding path program 1 times [2020-08-19 02:53:15,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:53:15,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459879421] [2020-08-19 02:53:15,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:53:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:53:15,887 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:53:15,888 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:53:15,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:53:15,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:53:15 BoogieIcfgContainer [2020-08-19 02:53:15,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:53:15,932 INFO L168 Benchmark]: Toolchain (without parser) took 1754.37 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 105.9 MB in the beginning and 104.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 63.8 MB. Max. memory is 7.1 GB. [2020-08-19 02:53:15,934 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-19 02:53:15,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.64 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 105.4 MB in the beginning and 183.5 MB in the end (delta: -78.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-19 02:53:15,936 INFO L168 Benchmark]: Boogie Preprocessor took 41.18 ms. Allocated memory is still 204.5 MB. Free memory was 183.5 MB in the beginning and 181.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-08-19 02:53:15,938 INFO L168 Benchmark]: RCFGBuilder took 347.35 ms. Allocated memory is still 204.5 MB. Free memory was 181.2 MB in the beginning and 163.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-08-19 02:53:15,940 INFO L168 Benchmark]: TraceAbstraction took 1005.92 ms. Allocated memory is still 204.5 MB. Free memory was 162.7 MB in the beginning and 104.0 MB in the end (delta: 58.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. [2020-08-19 02:53:15,949 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 354.64 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 105.4 MB in the beginning and 183.5 MB in the end (delta: -78.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.18 ms. Allocated memory is still 204.5 MB. Free memory was 183.5 MB in the beginning and 181.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 347.35 ms. Allocated memory is still 204.5 MB. Free memory was 181.2 MB in the beginning and 163.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1005.92 ms. Allocated memory is still 204.5 MB. Free memory was 162.7 MB in the beginning and 104.0 MB in the end (delta: 58.7 MB). Peak memory consumption was 58.7 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] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i