/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --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/res1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:03:25,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:03:25,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:03:25,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:03:25,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:03:25,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:03:25,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:03:25,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:03:25,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:03:25,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:03:25,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:03:25,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:03:25,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:03:25,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:03:25,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:03:25,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:03:25,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:03:25,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:03:25,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:03:25,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:03:25,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:03:25,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:03:25,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:03:25,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:03:25,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:03:25,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:03:25,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:03:25,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:03:25,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:03:25,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:03:25,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:03:25,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:03:25,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:03:25,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:03:25,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:03:25,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:03:25,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:03:25,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:03:25,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:03:25,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:03:25,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:03:25,623 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 [2020-09-25 00:03:25,666 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:03:25,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:03:25,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:03:25,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:03:25,669 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:03:25,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:03:25,669 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:03:25,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:03:25,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:03:25,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:03:25,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:03:25,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:03:25,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:03:25,672 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:03:25,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:03:25,672 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:03:25,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:03:25,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:03:25,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:03:25,673 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:03:25,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:03:25,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:03:25,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:03:25,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:03:25,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:03:25,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:03:25,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:03:25,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:03:25,675 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:03:25,675 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-25 00:03:26,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:03:26,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:03:26,147 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:03:26,149 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:03:26,150 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:03:26,151 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1f.c [2020-09-25 00:03:26,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55d0b908c/873df2fe00b74242a70719a59203bd3f/FLAG70f61e7ef [2020-09-25 00:03:26,806 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:03:26,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res1f.c [2020-09-25 00:03:26,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55d0b908c/873df2fe00b74242a70719a59203bd3f/FLAG70f61e7ef [2020-09-25 00:03:27,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55d0b908c/873df2fe00b74242a70719a59203bd3f [2020-09-25 00:03:27,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:03:27,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:03:27,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:03:27,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:03:27,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:03:27,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:03:27" (1/1) ... [2020-09-25 00:03:27,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f7f464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:27, skipping insertion in model container [2020-09-25 00:03:27,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:03:27" (1/1) ... [2020-09-25 00:03:27,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:03:27,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:03:27,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:03:27,592 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:03:27,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:03:27,726 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:03:27,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:27 WrapperNode [2020-09-25 00:03:27,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:03:27,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:03:27,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:03:27,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:03:27,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:27" (1/1) ... [2020-09-25 00:03:27,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:27" (1/1) ... [2020-09-25 00:03:27,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:27" (1/1) ... [2020-09-25 00:03:27,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:27" (1/1) ... [2020-09-25 00:03:27,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:27" (1/1) ... [2020-09-25 00:03:27,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:27" (1/1) ... [2020-09-25 00:03:27,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:27" (1/1) ... [2020-09-25 00:03:27,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:03:27,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:03:27,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:03:27,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:03:27,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:27" (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 [2020-09-25 00:03:27,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:03:27,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:03:27,871 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:03:27,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:03:27,872 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:03:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:03:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:03:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:03:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:03:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:03:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 00:03:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:03:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 00:03:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 00:03:27,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:03:27,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:03:27,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:03:27,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:03:27,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:03:28,271 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:03:28,271 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 00:03:28,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:03:28 BoogieIcfgContainer [2020-09-25 00:03:28,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:03:28,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:03:28,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:03:28,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:03:28,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:03:27" (1/3) ... [2020-09-25 00:03:28,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f29874a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:03:28, skipping insertion in model container [2020-09-25 00:03:28,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:27" (2/3) ... [2020-09-25 00:03:28,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f29874a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:03:28, skipping insertion in model container [2020-09-25 00:03:28,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:03:28" (3/3) ... [2020-09-25 00:03:28,287 INFO L109 eAbstractionObserver]: Analyzing ICFG res1f.c [2020-09-25 00:03:28,299 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:03:28,309 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:03:28,330 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:03:28,359 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:03:28,359 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:03:28,359 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:03:28,359 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:03:28,360 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:03:28,360 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:03:28,360 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:03:28,360 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:03:28,386 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-25 00:03:28,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 00:03:28,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:28,397 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, 1, 1, 1, 1] [2020-09-25 00:03:28,398 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:28,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:28,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1226656927, now seen corresponding path program 1 times [2020-09-25 00:03:28,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:28,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113771276] [2020-09-25 00:03:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:28,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:28,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:28,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:29,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:30,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:30,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 00:03:30,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:03:30,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1429 [2020-09-25 00:03:30,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:30,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:03:30,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:03:30,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 00:03:30,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:03:30,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:30,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:30,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:30,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:03:30,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:30,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:03:30,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:30,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:30,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:30,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:30,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:30,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 00:03:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:30,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:30,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:30,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:03:30,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:30,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:03:30,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:30,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:03:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:03:30,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:30,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:03:30,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113771276] [2020-09-25 00:03:30,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:03:30,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:03:30,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883557790] [2020-09-25 00:03:30,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:03:30,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:30,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:03:30,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:03:30,192 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 5 states. [2020-09-25 00:03:30,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:30,542 INFO L93 Difference]: Finished difference Result 139 states and 165 transitions. [2020-09-25 00:03:30,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:03:30,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-09-25 00:03:30,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:30,556 INFO L225 Difference]: With dead ends: 139 [2020-09-25 00:03:30,557 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 00:03:30,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:03:30,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 00:03:30,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-25 00:03:30,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 00:03:30,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-09-25 00:03:30,621 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 37 [2020-09-25 00:03:30,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:30,622 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-09-25 00:03:30,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:03:30,623 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-09-25 00:03:30,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 00:03:30,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:30,625 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, 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] [2020-09-25 00:03:30,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:03:30,626 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:30,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:30,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1623654441, now seen corresponding path program 1 times [2020-09-25 00:03:30,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:30,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525020981] [2020-09-25 00:03:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 00:03:30,668 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 00:03:30,668 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:03:30,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:03:30,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:03:30 BoogieIcfgContainer [2020-09-25 00:03:30,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:03:30,703 INFO L168 Benchmark]: Toolchain (without parser) took 3448.72 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 100.3 MB in the beginning and 141.4 MB in the end (delta: -41.1 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:30,704 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 00:03:30,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 469.40 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 99.6 MB in the beginning and 181.8 MB in the end (delta: -82.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:30,707 INFO L168 Benchmark]: Boogie Preprocessor took 48.20 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 179.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:30,708 INFO L168 Benchmark]: RCFGBuilder took 500.44 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 159.0 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:30,709 INFO L168 Benchmark]: TraceAbstraction took 2420.75 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 158.3 MB in the beginning and 141.4 MB in the end (delta: 17.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:30,713 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 139.5 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 469.40 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 99.6 MB in the beginning and 181.8 MB in the end (delta: -82.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.20 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 179.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 500.44 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 159.0 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2420.75 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 158.3 MB in the beginning and 141.4 MB in the end (delta: 17.0 MB). Peak memory consumption was 50.0 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] = 1 [L31] i=0 [L31] COND TRUE i