/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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/s12iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:09:23,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:09:23,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:09:23,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:09:23,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:09:23,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:09:23,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:09:23,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:09:23,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:09:23,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:09:23,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:09:23,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:09:23,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:09:23,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:09:23,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:09:23,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:09:23,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:09:23,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:09:23,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:09:23,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:09:23,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:09:23,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:09:23,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:09:23,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:09:23,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:09:23,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:09:23,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:09:23,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:09:23,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:09:23,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:09:23,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:09:23,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:09:23,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:09:23,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:09:23,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:09:23,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:09:23,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:09:23,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:09:23,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:09:23,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:09:23,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:09:23,766 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 [2020-08-22 03:09:23,804 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:09:23,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:09:23,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:09:23,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:09:23,806 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:09:23,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:09:23,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:09:23,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:09:23,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:09:23,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:09:23,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:09:23,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:09:23,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:09:23,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:09:23,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:09:23,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:09:23,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:09:23,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:09:23,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:09:23,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:09:23,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:09:23,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:09:23,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:09:23,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:09:23,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:09:23,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:09:23,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:09:23,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:09:23,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:09:23,812 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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 03:09:24,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:09:24,150 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:09:24,157 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:09:24,159 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:09:24,160 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:09:24,160 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s12iff.c [2020-08-22 03:09:24,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1383b96ea/e164edf3f7a641e2af02c385a28501fa/FLAGd3c634b35 [2020-08-22 03:09:24,656 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:09:24,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s12iff.c [2020-08-22 03:09:24,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1383b96ea/e164edf3f7a641e2af02c385a28501fa/FLAGd3c634b35 [2020-08-22 03:09:25,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1383b96ea/e164edf3f7a641e2af02c385a28501fa [2020-08-22 03:09:25,064 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:09:25,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:09:25,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:09:25,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:09:25,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:09:25,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:09:25" (1/1) ... [2020-08-22 03:09:25,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c125fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:25, skipping insertion in model container [2020-08-22 03:09:25,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:09:25" (1/1) ... [2020-08-22 03:09:25,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:09:25,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:09:25,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:09:25,363 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:09:25,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:09:25,504 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:09:25,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:25 WrapperNode [2020-08-22 03:09:25,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:09:25,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:09:25,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:09:25,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:09:25,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:25" (1/1) ... [2020-08-22 03:09:25,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:25" (1/1) ... [2020-08-22 03:09:25,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:25" (1/1) ... [2020-08-22 03:09:25,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:25" (1/1) ... [2020-08-22 03:09:25,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:25" (1/1) ... [2020-08-22 03:09:25,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:25" (1/1) ... [2020-08-22 03:09:25,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:25" (1/1) ... [2020-08-22 03:09:25,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:09:25,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:09:25,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:09:25,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:09:25,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:25" (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 [2020-08-22 03:09:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:09:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:09:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 03:09:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 03:09:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:09:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:09:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 03:09:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 03:09:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 03:09:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:09:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:09:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:09:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:09:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:09:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:09:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:09:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:09:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:09:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:09:25,966 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:09:25,966 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 03:09:25,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:09:25 BoogieIcfgContainer [2020-08-22 03:09:25,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:09:25,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:09:25,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:09:25,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:09:25,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:09:25" (1/3) ... [2020-08-22 03:09:25,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b56b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:09:25, skipping insertion in model container [2020-08-22 03:09:25,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:25" (2/3) ... [2020-08-22 03:09:25,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b56b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:09:25, skipping insertion in model container [2020-08-22 03:09:25,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:09:25" (3/3) ... [2020-08-22 03:09:25,981 INFO L109 eAbstractionObserver]: Analyzing ICFG s12iff.c [2020-08-22 03:09:25,991 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:09:25,998 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:09:26,012 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:09:26,036 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:09:26,036 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:09:26,036 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:09:26,036 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:09:26,036 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:09:26,037 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:09:26,037 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:09:26,037 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:09:26,054 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-08-22 03:09:26,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 03:09:26,061 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:09:26,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:09:26,062 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:09:26,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:09:26,068 INFO L82 PathProgramCache]: Analyzing trace with hash 2033030480, now seen corresponding path program 1 times [2020-08-22 03:09:26,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:09:26,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523294968] [2020-08-22 03:09:26,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:09:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:26,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:09:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:26,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 03:09:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:26,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:09:26,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523294968] [2020-08-22 03:09:26,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:09:26,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:09:26,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312038584] [2020-08-22 03:09:26,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:09:26,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:09:26,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:09:26,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:09:26,289 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-08-22 03:09:26,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:09:26,444 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-08-22 03:09:26,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:09:26,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-22 03:09:26,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:09:26,459 INFO L225 Difference]: With dead ends: 62 [2020-08-22 03:09:26,459 INFO L226 Difference]: Without dead ends: 29 [2020-08-22 03:09:26,463 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 [2020-08-22 03:09:26,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-22 03:09:26,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-22 03:09:26,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-22 03:09:26,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-08-22 03:09:26,501 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 23 [2020-08-22 03:09:26,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:09:26,501 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-08-22 03:09:26,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:09:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-08-22 03:09:26,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 03:09:26,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:09:26,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:09:26,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:09:26,504 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:09:26,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:09:26,505 INFO L82 PathProgramCache]: Analyzing trace with hash 706992569, now seen corresponding path program 1 times [2020-08-22 03:09:26,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:09:26,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497120097] [2020-08-22 03:09:26,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:09:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:26,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:09:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:26,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 03:09:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:09:26,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497120097] [2020-08-22 03:09:26,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:09:26,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:09:26,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301903810] [2020-08-22 03:09:26,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:09:26,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:09:26,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:09:26,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:09:26,622 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-08-22 03:09:26,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:09:26,760 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-08-22 03:09:26,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 03:09:26,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-08-22 03:09:26,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:09:26,763 INFO L225 Difference]: With dead ends: 51 [2020-08-22 03:09:26,763 INFO L226 Difference]: Without dead ends: 37 [2020-08-22 03:09:26,764 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 [2020-08-22 03:09:26,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-22 03:09:26,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-08-22 03:09:26,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 03:09:26,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-08-22 03:09:26,774 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-08-22 03:09:26,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:09:26,775 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-08-22 03:09:26,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:09:26,775 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-08-22 03:09:26,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 03:09:26,776 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:09:26,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:09:26,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:09:26,777 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:09:26,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:09:26,778 INFO L82 PathProgramCache]: Analyzing trace with hash 284203188, now seen corresponding path program 1 times [2020-08-22 03:09:26,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:09:26,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869050725] [2020-08-22 03:09:26,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:09:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:09:26,875 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:09:26,875 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:09:26,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:09:26,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:09:26 BoogieIcfgContainer [2020-08-22 03:09:26,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:09:26,922 INFO L168 Benchmark]: Toolchain (without parser) took 1852.73 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 105.3 MB in the beginning and 105.3 MB in the end (delta: -12.5 kB). Peak memory consumption was 61.9 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:26,924 INFO L168 Benchmark]: CDTParser took 0.20 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 03:09:26,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.60 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 105.1 MB in the beginning and 183.4 MB in the end (delta: -78.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:26,926 INFO L168 Benchmark]: Boogie Preprocessor took 45.89 ms. Allocated memory is still 204.5 MB. Free memory was 183.4 MB in the beginning and 181.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:26,927 INFO L168 Benchmark]: RCFGBuilder took 417.21 ms. Allocated memory is still 204.5 MB. Free memory was 181.2 MB in the beginning and 162.5 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:26,929 INFO L168 Benchmark]: TraceAbstraction took 944.73 ms. Allocated memory is still 204.5 MB. Free memory was 161.9 MB in the beginning and 105.3 MB in the end (delta: 56.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:26,938 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 439.60 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 105.1 MB in the beginning and 183.4 MB in the end (delta: -78.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.89 ms. Allocated memory is still 204.5 MB. Free memory was 183.4 MB in the beginning and 181.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 417.21 ms. Allocated memory is still 204.5 MB. Free memory was 181.2 MB in the beginning and 162.5 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 944.73 ms. Allocated memory is still 204.5 MB. Free memory was 161.9 MB in the beginning and 105.3 MB in the end (delta: 56.6 MB). Peak memory consumption was 56.6 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