/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/ifeqn2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:34:49,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:34:49,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:34:49,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:34:49,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:34:49,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:34:49,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:34:49,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:34:50,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:34:50,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:34:50,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:34:50,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:34:50,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:34:50,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:34:50,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:34:50,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:34:50,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:34:50,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:34:50,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:34:50,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:34:50,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:34:50,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:34:50,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:34:50,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:34:50,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:34:50,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:34:50,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:34:50,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:34:50,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:34:50,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:34:50,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:34:50,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:34:50,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:34:50,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:34:50,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:34:50,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:34:50,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:34:50,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:34:50,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:34:50,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:34:50,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:34:50,054 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 [2020-09-21 12:34:50,104 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:34:50,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:34:50,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:34:50,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:34:50,107 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:34:50,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:34:50,107 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:34:50,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:34:50,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:34:50,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:34:50,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:34:50,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:34:50,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:34:50,110 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:34:50,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:34:50,110 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:34:50,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:34:50,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:34:50,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:34:50,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:34:50,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:34:50,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:34:50,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:34:50,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:34:50,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:34:50,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:34:50,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:34:50,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:34:50,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:34:50,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:34:50,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:34:50,579 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:34:50,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:34:50,587 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:34:50,588 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:34:50,590 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn2f.c [2020-09-21 12:34:50,675 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45f821b10/98be4587b9ca46cba7066d16846e0a44/FLAG6c57a31d8 [2020-09-21 12:34:51,201 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:34:51,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifeqn2f.c [2020-09-21 12:34:51,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45f821b10/98be4587b9ca46cba7066d16846e0a44/FLAG6c57a31d8 [2020-09-21 12:34:51,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45f821b10/98be4587b9ca46cba7066d16846e0a44 [2020-09-21 12:34:51,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:34:51,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:34:51,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:34:51,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:34:51,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:34:51,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:34:51" (1/1) ... [2020-09-21 12:34:51,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73fa4179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:51, skipping insertion in model container [2020-09-21 12:34:51,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:34:51" (1/1) ... [2020-09-21 12:34:51,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:34:51,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:34:51,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:34:51,850 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:34:51,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:34:51,889 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:34:51,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:51 WrapperNode [2020-09-21 12:34:51,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:34:51,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:34:51,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:34:51,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:34:51,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:51" (1/1) ... [2020-09-21 12:34:51,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:51" (1/1) ... [2020-09-21 12:34:51,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:51" (1/1) ... [2020-09-21 12:34:51,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:51" (1/1) ... [2020-09-21 12:34:51,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:51" (1/1) ... [2020-09-21 12:34:52,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:51" (1/1) ... [2020-09-21 12:34:52,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:51" (1/1) ... [2020-09-21 12:34:52,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:34:52,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:34:52,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:34:52,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:34:52,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:51" (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 [2020-09-21 12:34:52,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:34:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:34:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:34:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 12:34:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:34:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:34:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:34:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:34:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 12:34:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:34:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:34:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:34:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:34:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:34:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:34:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:34:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:34:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:34:52,429 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:34:52,429 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-21 12:34:52,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:34:52 BoogieIcfgContainer [2020-09-21 12:34:52,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:34:52,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:34:52,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:34:52,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:34:52,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:34:51" (1/3) ... [2020-09-21 12:34:52,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc87c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:34:52, skipping insertion in model container [2020-09-21 12:34:52,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:51" (2/3) ... [2020-09-21 12:34:52,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc87c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:34:52, skipping insertion in model container [2020-09-21 12:34:52,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:34:52" (3/3) ... [2020-09-21 12:34:52,444 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn2f.c [2020-09-21 12:34:52,452 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:34:52,460 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:34:52,482 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:34:52,507 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:34:52,507 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:34:52,508 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:34:52,508 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:34:52,508 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:34:52,508 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:34:52,508 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:34:52,508 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:34:52,529 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-09-21 12:34:52,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 12:34:52,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:34:52,537 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] [2020-09-21 12:34:52,537 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:34:52,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:34:52,544 INFO L82 PathProgramCache]: Analyzing trace with hash -294712258, now seen corresponding path program 1 times [2020-09-21 12:34:52,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:34:52,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787340460] [2020-09-21 12:34:52,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:34:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:52,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:52,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:53,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:53,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787340460] [2020-09-21 12:34:53,092 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-09-21 12:34:53,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:34:53,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-09-21 12:34:53,093 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-09-21 12:34:53,094 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:34:53,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:34:53,119 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-21 12:34:53,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:34:53 BoogieIcfgContainer [2020-09-21 12:34:53,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:34:53,123 INFO L168 Benchmark]: Toolchain (without parser) took 1544.61 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 104.1 MB in the beginning and 137.6 MB in the end (delta: -33.5 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:34:53,124 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.6 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:34:53,125 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.67 ms. Allocated memory is still 141.6 MB. Free memory was 103.4 MB in the beginning and 93.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:34:53,126 INFO L168 Benchmark]: Boogie Preprocessor took 122.02 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 93.0 MB in the beginning and 182.0 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:34:53,127 INFO L168 Benchmark]: RCFGBuilder took 420.83 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 164.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:34:53,128 INFO L168 Benchmark]: TraceAbstraction took 684.17 ms. Allocated memory is still 203.9 MB. Free memory was 163.9 MB in the beginning and 137.6 MB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:34:53,132 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 141.6 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 309.67 ms. Allocated memory is still 141.6 MB. Free memory was 103.4 MB in the beginning and 93.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.02 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 93.0 MB in the beginning and 182.0 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 420.83 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 164.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 684.17 ms. Allocated memory is still 203.9 MB. Free memory was 163.9 MB in the beginning and 137.6 MB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 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] int 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