/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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/1_3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:36:37,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:36:37,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:36:37,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:36:37,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:36:37,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:36:37,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:36:37,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:36:37,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:36:37,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:36:37,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:36:37,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:36:37,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:36:37,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:36:37,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:36:37,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:36:37,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:36:37,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:36:37,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:36:37,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:36:37,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:36:37,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:36:37,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:36:37,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:36:37,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:36:37,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:36:37,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:36:37,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:36:37,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:36:37,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:36:37,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:36:37,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:36:37,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:36:37,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:36:37,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:36:37,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:36:37,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:36:37,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:36:37,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:36:37,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:36:37,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:36:37,757 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 [2020-09-24 21:36:37,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:36:37,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:36:37,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:36:37,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:36:37,786 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:36:37,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:36:37,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:36:37,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:36:37,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:36:37,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:36:37,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:36:37,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:36:37,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:36:37,788 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:36:37,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:36:37,788 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:36:37,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:36:37,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:36:37,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:36:37,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:36:37,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:36:37,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:36:37,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:36:37,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:36:37,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:36:37,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:36:37,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:36:37,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:36:37,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:36:37,792 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:36:38,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:36:38,284 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:36:38,288 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:36:38,291 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:36:38,292 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:36:38,294 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i [2020-09-24 21:36:38,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2454546fe/fef62431987249e8a98ab6d3cae2f381/FLAG0b51b9d4b [2020-09-24 21:36:38,946 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:36:38,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/1_3.i [2020-09-24 21:36:38,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2454546fe/fef62431987249e8a98ab6d3cae2f381/FLAG0b51b9d4b [2020-09-24 21:36:39,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2454546fe/fef62431987249e8a98ab6d3cae2f381 [2020-09-24 21:36:39,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:36:39,306 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:36:39,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:36:39,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:36:39,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:36:39,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:36:39" (1/1) ... [2020-09-24 21:36:39,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2830e110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:39, skipping insertion in model container [2020-09-24 21:36:39,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:36:39" (1/1) ... [2020-09-24 21:36:39,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:36:39,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:36:39,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:36:39,598 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:36:39,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:36:39,636 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:36:39,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:39 WrapperNode [2020-09-24 21:36:39,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:36:39,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:36:39,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:36:39,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:36:39,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:39" (1/1) ... [2020-09-24 21:36:39,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:39" (1/1) ... [2020-09-24 21:36:39,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:39" (1/1) ... [2020-09-24 21:36:39,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:39" (1/1) ... [2020-09-24 21:36:39,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:39" (1/1) ... [2020-09-24 21:36:39,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:39" (1/1) ... [2020-09-24 21:36:39,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:39" (1/1) ... [2020-09-24 21:36:39,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:36:39,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:36:39,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:36:39,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:36:39,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:39" (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 [2020-09-24 21:36:39,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:36:39,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:36:39,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-24 21:36:39,843 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2020-09-24 21:36:39,843 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2020-09-24 21:36:39,843 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2020-09-24 21:36:39,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:36:39,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:36:39,844 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-24 21:36:39,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:36:39,844 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:36:39,844 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2020-09-24 21:36:39,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:36:39,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:36:39,845 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2020-09-24 21:36:39,845 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2020-09-24 21:36:39,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:36:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:36:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:36:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:36:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:36:40,155 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:36:40,155 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:36:40,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:36:40 BoogieIcfgContainer [2020-09-24 21:36:40,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:36:40,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:36:40,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:36:40,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:36:40,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:36:39" (1/3) ... [2020-09-24 21:36:40,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654188a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:36:40, skipping insertion in model container [2020-09-24 21:36:40,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:39" (2/3) ... [2020-09-24 21:36:40,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654188a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:36:40, skipping insertion in model container [2020-09-24 21:36:40,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:36:40" (3/3) ... [2020-09-24 21:36:40,184 INFO L109 eAbstractionObserver]: Analyzing ICFG 1_3.i [2020-09-24 21:36:40,196 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:36:40,206 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:36:40,228 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:36:40,258 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:36:40,258 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:36:40,258 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:36:40,258 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:36:40,258 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:36:40,259 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:36:40,259 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:36:40,259 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:36:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-24 21:36:40,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 21:36:40,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:36:40,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:36:40,292 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:36:40,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:36:40,300 INFO L82 PathProgramCache]: Analyzing trace with hash 538172514, now seen corresponding path program 1 times [2020-09-24 21:36:40,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:36:40,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059278877] [2020-09-24 21:36:40,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:36:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:36:40,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:36:40,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:36:40,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 21:36:40,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:36:40,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-09-24 21:36:40,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:36:40,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:36:40,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 21:36:40,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:36:40,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:36:41,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:36:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:36:41,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:36:41,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:36:41,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:36:41,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:36:41,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:36:41,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:36:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:36:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:36:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:36:41,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:36:41,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:36:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:36:41,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:36:41,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:36:41,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 21:36:41,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:36:41,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 21:36:41,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:36:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:36:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:36:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:36:41,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:36:41,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:36:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:36:41,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:36:41,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:36:41,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:36:41,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:36:41,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:36:41,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:36:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:36:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:36:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:36:41,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:36:41,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:36:41,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059278877] [2020-09-24 21:36:41,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:36:41,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 21:36:41,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72082628] [2020-09-24 21:36:41,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:36:41,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:36:41,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:36:41,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:36:41,419 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 11 states. [2020-09-24 21:36:41,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:36:41,858 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-09-24 21:36:41,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:36:41,860 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-09-24 21:36:41,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:36:41,872 INFO L225 Difference]: With dead ends: 64 [2020-09-24 21:36:41,872 INFO L226 Difference]: Without dead ends: 39 [2020-09-24 21:36:41,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:36:41,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-24 21:36:41,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-24 21:36:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-24 21:36:41,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 38 transitions. [2020-09-24 21:36:41,936 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 38 transitions. Word has length 30 [2020-09-24 21:36:41,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:36:41,937 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 38 transitions. [2020-09-24 21:36:41,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:36:41,937 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 38 transitions. [2020-09-24 21:36:41,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 21:36:41,939 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:36:41,939 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-09-24 21:36:41,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:36:41,940 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:36:41,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:36:41,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1533664090, now seen corresponding path program 1 times [2020-09-24 21:36:41,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:36:41,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440770995] [2020-09-24 21:36:41,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:36:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:36:41,960 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:36:41,961 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:36:41,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:36:41,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:36:41 BoogieIcfgContainer [2020-09-24 21:36:41,992 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:36:41,996 INFO L168 Benchmark]: Toolchain (without parser) took 2693.61 ms. Allocated memory was 140.5 MB in the beginning and 235.4 MB in the end (delta: 94.9 MB). Free memory was 103.5 MB in the beginning and 163.4 MB in the end (delta: -59.9 MB). Peak memory consumption was 35.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:36:41,997 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 21:36:41,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.73 ms. Allocated memory is still 140.5 MB. Free memory was 102.8 MB in the beginning and 92.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:36:41,999 INFO L168 Benchmark]: Boogie Preprocessor took 116.55 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.9 MB in the beginning and 181.8 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:36:42,000 INFO L168 Benchmark]: RCFGBuilder took 406.57 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 165.6 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:36:42,001 INFO L168 Benchmark]: TraceAbstraction took 1820.85 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 164.9 MB in the beginning and 163.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:36:42,005 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 325.73 ms. Allocated memory is still 140.5 MB. Free memory was 102.8 MB in the beginning and 92.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.55 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.9 MB in the beginning and 181.8 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 406.57 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 165.6 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1820.85 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 164.9 MB in the beginning and 163.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L50] rr * ptr1 = 0; [L51] CALL, EXPR getPtr() [L37] CALL, EXPR getrr() [L30] rr * r = (rr *)malloc(sizeof *r); [L31] r -> state = 0 [L32] return r; [L37] RET, EXPR getrr() [L37] rr * r = getrr(); [L38] r -> state = 1 [L39] return r; [L51] RET, EXPR getPtr() [L51] ptr1 = getPtr() [L52] CALL freePtr(ptr1) [L44] EXPR ptr -> state [L44] (ptr -> state == 1) ? (0) : __blast_assert () [L45] ptr -> state = 2 [L52] RET freePtr(ptr1) [L54] CALL freePtr(ptr1) [L44] EXPR ptr -> state [L44] (ptr -> state == 1) ? (0) : __blast_assert () [L44] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 35 SDslu, 157 SDs, 0 SdLazy, 178 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 3074 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...