/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/res1of.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:15:32,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:15:32,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:15:32,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:15:32,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:15:32,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:15:32,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:15:32,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:15:32,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:15:32,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:15:32,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:15:32,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:15:32,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:15:32,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:15:32,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:15:32,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:15:32,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:15:32,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:15:32,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:15:32,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:15:32,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:15:32,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:15:32,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:15:32,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:15:32,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:15:32,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:15:32,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:15:32,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:15:32,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:15:32,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:15:32,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:15:32,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:15:32,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:15:32,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:15:32,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:15:32,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:15:32,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:15:32,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:15:32,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:15:32,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:15:32,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:15:32,843 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 18:15:32,891 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:15:32,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:15:32,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:15:32,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:15:32,894 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:15:32,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:15:32,895 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:15:32,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:15:32,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:15:32,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:15:32,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:15:32,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:15:32,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:15:32,896 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:15:32,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:15:32,897 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:15:32,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:15:32,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:15:32,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:15:32,897 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:15:32,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:15:32,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:15:32,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:15:32,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:15:32,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:15:32,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:15:32,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:15:32,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:15:32,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:15:32,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:15:33,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:15:33,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:15:33,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:15:33,251 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:15:33,251 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:15:33,252 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1of.c [2020-08-21 18:15:33,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed0647dcf/604102ff67d645ad94da4decd3811dc5/FLAG909bd0d04 [2020-08-21 18:15:33,779 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:15:33,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res1of.c [2020-08-21 18:15:33,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed0647dcf/604102ff67d645ad94da4decd3811dc5/FLAG909bd0d04 [2020-08-21 18:15:34,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed0647dcf/604102ff67d645ad94da4decd3811dc5 [2020-08-21 18:15:34,129 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:15:34,131 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:15:34,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:15:34,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:15:34,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:15:34,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:15:34" (1/1) ... [2020-08-21 18:15:34,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e98fcf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:34, skipping insertion in model container [2020-08-21 18:15:34,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:15:34" (1/1) ... [2020-08-21 18:15:34,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:15:34,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:15:34,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:15:34,380 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:15:34,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:15:34,445 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:15:34,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:34 WrapperNode [2020-08-21 18:15:34,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:15:34,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:15:34,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:15:34,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:15:34,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:34" (1/1) ... [2020-08-21 18:15:34,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:34" (1/1) ... [2020-08-21 18:15:34,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:34" (1/1) ... [2020-08-21 18:15:34,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:34" (1/1) ... [2020-08-21 18:15:34,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:34" (1/1) ... [2020-08-21 18:15:34,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:34" (1/1) ... [2020-08-21 18:15:34,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:34" (1/1) ... [2020-08-21 18:15:34,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:15:34,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:15:34,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:15:34,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:15:34,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:15:34,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:15:34,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:15:34,678 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 18:15:34,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 18:15:34,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:15:34,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:15:34,679 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 18:15:34,679 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 18:15:34,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 18:15:34,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:15:34,680 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:15:34,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:15:34,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:15:34,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:15:34,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:15:34,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:15:34,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:15:34,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:15:34,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:15:34,970 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:15:34,970 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 18:15:34,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:15:34 BoogieIcfgContainer [2020-08-21 18:15:34,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:15:34,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:15:34,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:15:34,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:15:34,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:15:34" (1/3) ... [2020-08-21 18:15:34,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7b3858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:15:34, skipping insertion in model container [2020-08-21 18:15:34,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:15:34" (2/3) ... [2020-08-21 18:15:34,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7b3858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:15:34, skipping insertion in model container [2020-08-21 18:15:34,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:15:34" (3/3) ... [2020-08-21 18:15:34,985 INFO L109 eAbstractionObserver]: Analyzing ICFG res1of.c [2020-08-21 18:15:34,997 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:15:35,005 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:15:35,023 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:15:35,051 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:15:35,051 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:15:35,051 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:15:35,051 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:15:35,051 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:15:35,052 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:15:35,052 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:15:35,052 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:15:35,083 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-21 18:15:35,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 18:15:35,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:15:35,091 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] [2020-08-21 18:15:35,092 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:15:35,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:15:35,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-08-21 18:15:35,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:15:35,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048003644] [2020-08-21 18:15:35,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:15:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:15:35,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:15:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:15:35,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:15:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:15:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:15:35,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048003644] [2020-08-21 18:15:35,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:15:35,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 18:15:35,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143547224] [2020-08-21 18:15:35,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 18:15:35,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:15:35,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 18:15:35,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:15:35,345 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-21 18:15:35,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:15:35,490 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-21 18:15:35,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:15:35,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-08-21 18:15:35,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:15:35,503 INFO L225 Difference]: With dead ends: 64 [2020-08-21 18:15:35,503 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 18:15:35,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:15:35,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 18:15:35,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-21 18:15:35,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-21 18:15:35,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-21 18:15:35,551 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-08-21 18:15:35,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:15:35,551 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-21 18:15:35,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 18:15:35,552 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-21 18:15:35,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 18:15:35,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:15:35,553 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] [2020-08-21 18:15:35,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:15:35,554 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:15:35,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:15:35,554 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-08-21 18:15:35,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:15:35,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408890351] [2020-08-21 18:15:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:15:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:15:35,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:15:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:15:35,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:15:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:15:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:15:35,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408890351] [2020-08-21 18:15:35,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:15:35,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:15:35,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315781319] [2020-08-21 18:15:35,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:15:35,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:15:35,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:15:35,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:15:35,680 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-08-21 18:15:35,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:15:35,832 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-08-21 18:15:35,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 18:15:35,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-08-21 18:15:35,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:15:35,834 INFO L225 Difference]: With dead ends: 53 [2020-08-21 18:15:35,835 INFO L226 Difference]: Without dead ends: 38 [2020-08-21 18:15:35,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:15:35,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-21 18:15:35,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-08-21 18:15:35,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-21 18:15:35,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-08-21 18:15:35,846 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2020-08-21 18:15:35,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:15:35,847 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-08-21 18:15:35,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:15:35,847 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-08-21 18:15:35,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-21 18:15:35,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:15:35,849 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, 1, 1] [2020-08-21 18:15:35,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:15:35,849 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:15:35,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:15:35,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1815337701, now seen corresponding path program 1 times [2020-08-21 18:15:35,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:15:35,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111235827] [2020-08-21 18:15:35,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:15:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:15:35,944 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:15:35,944 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:15:35,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:15:35,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:15:35 BoogieIcfgContainer [2020-08-21 18:15:35,982 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:15:35,996 INFO L168 Benchmark]: Toolchain (without parser) took 1861.99 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 104.2 MB in the beginning and 104.8 MB in the end (delta: -660.3 kB). Peak memory consumption was 62.3 MB. Max. memory is 7.1 GB. [2020-08-21 18:15:35,999 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 18:15:36,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.78 ms. Allocated memory is still 141.0 MB. Free memory was 104.0 MB in the beginning and 93.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-21 18:15:36,001 INFO L168 Benchmark]: Boogie Preprocessor took 157.09 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.3 MB in the beginning and 181.3 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-21 18:15:36,003 INFO L168 Benchmark]: RCFGBuilder took 371.48 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 162.9 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-08-21 18:15:36,005 INFO L168 Benchmark]: TraceAbstraction took 1012.48 ms. Allocated memory is still 203.9 MB. Free memory was 162.2 MB in the beginning and 104.8 MB in the end (delta: 57.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2020-08-21 18:15:36,012 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 314.78 ms. Allocated memory is still 141.0 MB. Free memory was 104.0 MB in the beginning and 93.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 157.09 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.3 MB in the beginning and 181.3 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 371.48 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 162.9 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1012.48 ms. Allocated memory is still 203.9 MB. Free memory was 162.2 MB in the beginning and 104.8 MB in the end (delta: 57.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L28] int *b = malloc(sizeof(int)*N); [L30] sum[0] = 0 [L31] i=0 [L31] COND TRUE i