/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/s5iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:54:40,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:54:40,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:54:40,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:54:40,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:54:40,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:54:40,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:54:40,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:54:40,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:54:40,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:54:40,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:54:40,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:54:40,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:54:40,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:54:40,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:54:40,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:54:40,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:54:40,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:54:40,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:54:40,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:54:40,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:54:40,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:54:40,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:54:40,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:54:40,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:54:40,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:54:40,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:54:40,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:54:40,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:54:40,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:54:40,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:54:40,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:54:40,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:54:40,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:54:40,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:54:40,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:54:40,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:54:40,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:54:40,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:54:40,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:54:40,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:54:40,840 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 23:54:40,863 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:54:40,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:54:40,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:54:40,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:54:40,865 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:54:40,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:54:40,866 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:54:40,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:54:40,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:54:40,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:54:40,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:54:40,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:54:40,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:54:40,867 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:54:40,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:54:40,867 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:54:40,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:54:40,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:54:40,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:54:40,868 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:54:40,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:54:40,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:54:40,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:54:40,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:54:40,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:54:40,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:54:40,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:54:40,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:54:40,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:54:40,871 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:54:41,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:54:41,241 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:54:41,245 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:54:41,247 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:54:41,248 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:54:41,249 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s5iff.c [2020-08-21 23:54:41,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd6b60c09/497625fb8eb949008c75833f15de8fa9/FLAG13c924cac [2020-08-21 23:54:41,835 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:54:41,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s5iff.c [2020-08-21 23:54:41,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd6b60c09/497625fb8eb949008c75833f15de8fa9/FLAG13c924cac [2020-08-21 23:54:42,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd6b60c09/497625fb8eb949008c75833f15de8fa9 [2020-08-21 23:54:42,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:54:42,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:54:42,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:54:42,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:54:42,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:54:42,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:54:42" (1/1) ... [2020-08-21 23:54:42,273 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 21.08 11:54:42, skipping insertion in model container [2020-08-21 23:54:42,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:54:42" (1/1) ... [2020-08-21 23:54:42,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:54:42,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:54:42,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:54:42,559 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:54:42,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:54:42,686 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:54:42,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:42 WrapperNode [2020-08-21 23:54:42,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:54:42,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:54:42,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:54:42,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:54:42,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:42" (1/1) ... [2020-08-21 23:54:42,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:42" (1/1) ... [2020-08-21 23:54:42,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:42" (1/1) ... [2020-08-21 23:54:42,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:42" (1/1) ... [2020-08-21 23:54:42,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:42" (1/1) ... [2020-08-21 23:54:42,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:42" (1/1) ... [2020-08-21 23:54:42,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:42" (1/1) ... [2020-08-21 23:54:42,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:54:42,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:54:42,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:54:42,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:54:42,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:42" (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 23:54:42,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:54:42,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:54:42,800 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 23:54:42,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 23:54:42,800 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:54:42,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:54:42,802 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 23:54:42,802 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 23:54:42,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 23:54:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:54:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:54:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:54:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:54:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:54:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:54:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:54:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:54:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:54:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:54:43,101 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:54:43,101 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-21 23:54:43,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:54:43 BoogieIcfgContainer [2020-08-21 23:54:43,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:54:43,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:54:43,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:54:43,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:54:43,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:54:42" (1/3) ... [2020-08-21 23:54:43,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0adb6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:54:43, skipping insertion in model container [2020-08-21 23:54:43,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:42" (2/3) ... [2020-08-21 23:54:43,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0adb6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:54:43, skipping insertion in model container [2020-08-21 23:54:43,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:54:43" (3/3) ... [2020-08-21 23:54:43,114 INFO L109 eAbstractionObserver]: Analyzing ICFG s5iff.c [2020-08-21 23:54:43,122 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:54:43,129 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:54:43,142 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:54:43,164 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:54:43,165 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:54:43,165 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:54:43,165 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:54:43,165 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:54:43,165 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:54:43,165 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:54:43,166 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:54:43,186 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-21 23:54:43,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 23:54:43,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:54:43,194 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] [2020-08-21 23:54:43,194 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:54:43,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:54:43,201 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-08-21 23:54:43,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:54:43,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073099840] [2020-08-21 23:54:43,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:54:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:43,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:54:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:43,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:54:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:43,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:54:43,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073099840] [2020-08-21 23:54:43,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:54:43,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:54:43,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255462432] [2020-08-21 23:54:43,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:54:43,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:54:43,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:54:43,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:54:43,437 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-21 23:54:43,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:54:43,585 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-08-21 23:54:43,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:54:43,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 23:54:43,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:54:43,604 INFO L225 Difference]: With dead ends: 54 [2020-08-21 23:54:43,604 INFO L226 Difference]: Without dead ends: 25 [2020-08-21 23:54:43,610 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 23:54:43,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-21 23:54:43,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-21 23:54:43,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-21 23:54:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-21 23:54:43,669 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-08-21 23:54:43,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:54:43,669 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-21 23:54:43,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:54:43,670 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-21 23:54:43,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 23:54:43,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:54:43,671 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] [2020-08-21 23:54:43,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:54:43,673 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:54:43,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:54:43,674 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-08-21 23:54:43,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:54:43,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012515226] [2020-08-21 23:54:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:54:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:43,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:54:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:43,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:54:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:43,844 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 23:54:43,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012515226] [2020-08-21 23:54:43,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:54:43,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:54:43,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670561336] [2020-08-21 23:54:43,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:54:43,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:54:43,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:54:43,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:54:43,852 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-08-21 23:54:43,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:54:43,996 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-08-21 23:54:43,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 23:54:43,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 23:54:43,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:54:43,998 INFO L225 Difference]: With dead ends: 40 [2020-08-21 23:54:43,998 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 23:54:44,000 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 23:54:44,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 23:54:44,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-08-21 23:54:44,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-21 23:54:44,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-08-21 23:54:44,018 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2020-08-21 23:54:44,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:54:44,019 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-08-21 23:54:44,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:54:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-08-21 23:54:44,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 23:54:44,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:54:44,022 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] [2020-08-21 23:54:44,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:54:44,026 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:54:44,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:54:44,026 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-08-21 23:54:44,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:54:44,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103231601] [2020-08-21 23:54:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:54:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 23:54:44,111 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 23:54:44,111 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 23:54:44,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:54:44,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:54:44 BoogieIcfgContainer [2020-08-21 23:54:44,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:54:44,151 INFO L168 Benchmark]: Toolchain (without parser) took 1906.45 ms. Allocated memory was 145.2 MB in the beginning and 198.7 MB in the end (delta: 53.5 MB). Free memory was 101.0 MB in the beginning and 105.5 MB in the end (delta: -4.5 MB). Peak memory consumption was 49.0 MB. Max. memory is 7.1 GB. [2020-08-21 23:54:44,152 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-21 23:54:44,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 442.39 ms. Allocated memory was 145.2 MB in the beginning and 198.7 MB in the end (delta: 53.5 MB). Free memory was 100.8 MB in the beginning and 177.7 MB in the end (delta: -76.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-08-21 23:54:44,154 INFO L168 Benchmark]: Boogie Preprocessor took 47.42 ms. Allocated memory is still 198.7 MB. Free memory was 177.7 MB in the beginning and 175.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-21 23:54:44,155 INFO L168 Benchmark]: RCFGBuilder took 370.28 ms. Allocated memory is still 198.7 MB. Free memory was 175.3 MB in the beginning and 158.2 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-08-21 23:54:44,156 INFO L168 Benchmark]: TraceAbstraction took 1040.80 ms. Allocated memory is still 198.7 MB. Free memory was 157.6 MB in the beginning and 105.5 MB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. [2020-08-21 23:54:44,160 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 442.39 ms. Allocated memory was 145.2 MB in the beginning and 198.7 MB in the end (delta: 53.5 MB). Free memory was 100.8 MB in the beginning and 177.7 MB in the end (delta: -76.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.42 ms. Allocated memory is still 198.7 MB. Free memory was 177.7 MB in the beginning and 175.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 370.28 ms. Allocated memory is still 198.7 MB. Free memory was 175.3 MB in the beginning and 158.2 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1040.80 ms. Allocated memory is still 198.7 MB. Free memory was 157.6 MB in the beginning and 105.5 MB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i