/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 SequenceOfStatements --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ifeqn3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:50:57,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:50:57,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:50:57,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:50:57,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:50:57,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:50:57,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:50:57,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:50:57,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:50:57,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:50:57,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:50:57,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:50:57,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:50:57,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:50:57,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:50:57,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:50:57,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:50:57,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:50:57,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:50:57,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:50:57,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:50:57,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:50:57,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:50:57,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:50:57,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:50:57,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:50:57,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:50:57,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:50:57,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:50:57,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:50:57,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:50:57,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:50:57,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:50:57,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:50:57,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:50:57,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:50:57,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:50:57,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:50:57,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:50:57,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:50:57,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:50:57,126 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 [2020-10-13 23:50:57,167 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:50:57,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:50:57,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:50:57,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:50:57,170 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:50:57,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:50:57,171 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:50:57,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:50:57,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:50:57,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:50:57,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:50:57,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:50:57,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:50:57,173 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:50:57,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:50:57,173 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:50:57,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:50:57,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:50:57,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:50:57,174 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:50:57,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:50:57,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:50:57,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:50:57,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:50:57,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:50:57,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:50:57,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:50:57,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:50:57,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:50:57,176 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 -> SequenceOfStatements 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:50:57,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:50:57,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:50:57,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:50:57,512 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:50:57,513 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:50:57,514 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn3.c [2020-10-13 23:50:57,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4626aa5b/d1efd26b63154825b87d7735d740729c/FLAG0bc6c951b [2020-10-13 23:50:58,060 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:50:58,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifeqn3.c [2020-10-13 23:50:58,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4626aa5b/d1efd26b63154825b87d7735d740729c/FLAG0bc6c951b [2020-10-13 23:50:58,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4626aa5b/d1efd26b63154825b87d7735d740729c [2020-10-13 23:50:58,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:50:58,450 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:50:58,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:50:58,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:50:58,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:50:58,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:50:58" (1/1) ... [2020-10-13 23:50:58,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434f45a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:58, skipping insertion in model container [2020-10-13 23:50:58,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:50:58" (1/1) ... [2020-10-13 23:50:58,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:50:58,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:50:58,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:50:58,717 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:50:58,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:50:58,780 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:50:58,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:58 WrapperNode [2020-10-13 23:50:58,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:50:58,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:50:58,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:50:58,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:50:58,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:58" (1/1) ... [2020-10-13 23:50:58,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:58" (1/1) ... [2020-10-13 23:50:58,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:58" (1/1) ... [2020-10-13 23:50:58,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:58" (1/1) ... [2020-10-13 23:50:58,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:58" (1/1) ... [2020-10-13 23:50:58,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:58" (1/1) ... [2020-10-13 23:50:58,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:58" (1/1) ... [2020-10-13 23:50:58,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:50:58,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:50:58,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:50:58,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:50:58,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:58" (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 [2020-10-13 23:50:58,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:50:58,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:50:58,992 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 23:50:58,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:50:58,993 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:50:58,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:50:58,994 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 23:50:58,994 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 23:50:58,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:50:58,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:50:58,994 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 23:50:58,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:50:58,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 23:50:58,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:50:58,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:50:58,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:50:58,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:50:58,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:50:59,352 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:50:59,353 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 23:50:59,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:50:59 BoogieIcfgContainer [2020-10-13 23:50:59,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:50:59,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:50:59,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:50:59,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:50:59,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:50:58" (1/3) ... [2020-10-13 23:50:59,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a26d3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:50:59, skipping insertion in model container [2020-10-13 23:50:59,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:58" (2/3) ... [2020-10-13 23:50:59,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a26d3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:50:59, skipping insertion in model container [2020-10-13 23:50:59,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:50:59" (3/3) ... [2020-10-13 23:50:59,370 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn3.c [2020-10-13 23:50:59,382 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:50:59,389 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:50:59,403 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:50:59,426 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:50:59,426 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:50:59,427 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:50:59,427 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:50:59,427 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:50:59,427 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:50:59,427 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:50:59,428 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:50:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-13 23:50:59,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 23:50:59,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:50:59,453 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] [2020-10-13 23:50:59,453 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:50:59,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:50:59,458 INFO L82 PathProgramCache]: Analyzing trace with hash -294712258, now seen corresponding path program 1 times [2020-10-13 23:50:59,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:50:59,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292834015] [2020-10-13 23:50:59,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:50:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:50:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:59,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:59,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:50:59,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:51:00,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292834015] [2020-10-13 23:51:00,021 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-10-13 23:51:00,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:51:00,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-13 23:51:00,022 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-10-13 23:51:00,023 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 23:51:00,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:51:00,054 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-13 23:51:00,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:51:00 BoogieIcfgContainer [2020-10-13 23:51:00,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 23:51:00,060 INFO L168 Benchmark]: Toolchain (without parser) took 1606.70 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 103.6 MB in the beginning and 133.7 MB in the end (delta: -30.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-10-13 23:51:00,062 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-13 23:51:00,064 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.17 ms. Allocated memory is still 146.8 MB. Free memory was 103.4 MB in the beginning and 92.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-10-13 23:51:00,066 INFO L168 Benchmark]: Boogie Preprocessor took 147.26 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 92.3 MB in the beginning and 181.4 MB in the end (delta: -89.0 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-10-13 23:51:00,068 INFO L168 Benchmark]: RCFGBuilder took 426.86 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 163.6 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-10-13 23:51:00,069 INFO L168 Benchmark]: TraceAbstraction took 696.44 ms. Allocated memory is still 203.9 MB. Free memory was 162.9 MB in the beginning and 133.7 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2020-10-13 23:51:00,079 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 331.17 ms. Allocated memory is still 146.8 MB. Free memory was 103.4 MB in the beginning and 92.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.26 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 92.3 MB in the beginning and 181.4 MB in the end (delta: -89.0 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 426.86 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 163.6 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 696.44 ms. Allocated memory is still 203.9 MB. Free memory was 162.9 MB in the beginning and 133.7 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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 TRUE !cond [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] long long i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] i=0 [L29] COND FALSE !(i