/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ifeqn2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:03:09,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:03:09,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:03:09,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:03:09,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:03:09,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:03:09,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:03:09,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:03:09,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:03:09,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:03:09,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:03:09,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:03:09,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:03:09,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:03:09,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:03:09,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:03:09,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:03:09,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:03:09,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:03:09,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:03:09,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:03:09,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:03:09,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:03:09,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:03:09,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:03:09,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:03:09,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:03:09,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:03:09,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:03:09,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:03:09,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:03:09,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:03:09,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:03:09,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:03:09,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:03:09,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:03:09,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:03:09,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:03:09,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:03:09,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:03:09,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:03:09,511 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:03:09,565 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:03:09,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:03:09,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:03:09,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:03:09,568 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:03:09,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:03:09,568 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:03:09,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:03:09,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:03:09,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:03:09,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:03:09,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:03:09,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:03:09,571 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:03:09,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:03:09,572 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:03:09,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:03:09,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:03:09,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:03:09,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:03:09,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:03:09,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:03:09,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:03:09,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:03:09,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:03:09,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:03:09,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:03:09,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:03:09,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:03:09,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-25 00:03:10,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:03:10,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:03:10,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:03:10,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:03:10,071 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:03:10,072 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn2f.c [2020-09-25 00:03:10,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9979ebf76/48d9b580146648069da6833721987f7b/FLAGfc74a7cdf [2020-09-25 00:03:10,745 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:03:10,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifeqn2f.c [2020-09-25 00:03:10,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9979ebf76/48d9b580146648069da6833721987f7b/FLAGfc74a7cdf [2020-09-25 00:03:11,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9979ebf76/48d9b580146648069da6833721987f7b [2020-09-25 00:03:11,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:03:11,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:03:11,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:03:11,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:03:11,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:03:11,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:03:11" (1/1) ... [2020-09-25 00:03:11,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@241c2aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:11, skipping insertion in model container [2020-09-25 00:03:11,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:03:11" (1/1) ... [2020-09-25 00:03:11,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:03:11,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:03:11,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:03:11,434 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:03:11,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:03:11,480 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:03:11,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:11 WrapperNode [2020-09-25 00:03:11,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:03:11,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:03:11,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:03:11,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:03:11,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:11" (1/1) ... [2020-09-25 00:03:11,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:11" (1/1) ... [2020-09-25 00:03:11,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:11" (1/1) ... [2020-09-25 00:03:11,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:11" (1/1) ... [2020-09-25 00:03:11,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:11" (1/1) ... [2020-09-25 00:03:11,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:11" (1/1) ... [2020-09-25 00:03:11,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:11" (1/1) ... [2020-09-25 00:03:11,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:03:11,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:03:11,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:03:11,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:03:11,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:03:11,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:03:11,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:03:11,702 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:03:11,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:03:11,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:03:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:03:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:03:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:03:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:03:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:03:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 00:03:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:03:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 00:03:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:03:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:03:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:03:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:03:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:03:12,084 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:03:12,085 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 00:03:12,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:03:12 BoogieIcfgContainer [2020-09-25 00:03:12,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:03:12,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:03:12,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:03:12,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:03:12,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:03:11" (1/3) ... [2020-09-25 00:03:12,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50efca97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:03:12, skipping insertion in model container [2020-09-25 00:03:12,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:11" (2/3) ... [2020-09-25 00:03:12,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50efca97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:03:12, skipping insertion in model container [2020-09-25 00:03:12,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:03:12" (3/3) ... [2020-09-25 00:03:12,100 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn2f.c [2020-09-25 00:03:12,112 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:03:12,123 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:03:12,142 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:03:12,172 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:03:12,172 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:03:12,172 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:03:12,172 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:03:12,172 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:03:12,172 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:03:12,173 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:03:12,173 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:03:12,197 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-25 00:03:12,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 00:03:12,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:12,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:12,209 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:12,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:12,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1150160147, now seen corresponding path program 1 times [2020-09-25 00:03:12,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:12,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57232625] [2020-09-25 00:03:12,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:12,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:12,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57232625] [2020-09-25 00:03:12,502 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-09-25 00:03:12,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:03:12,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-09-25 00:03:12,503 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-09-25 00:03:12,504 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:03:12,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:03:12,532 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-25 00:03:12,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:03:12 BoogieIcfgContainer [2020-09-25 00:03:12,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:03:12,537 INFO L168 Benchmark]: Toolchain (without parser) took 1431.79 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 105.5 MB in the beginning and 145.0 MB in the end (delta: -39.6 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:12,538 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 00:03:12,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.98 ms. Allocated memory is still 148.4 MB. Free memory was 104.8 MB in the beginning and 94.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:12,540 INFO L168 Benchmark]: Boogie Preprocessor took 137.19 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 94.4 MB in the beginning and 182.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:12,542 INFO L168 Benchmark]: RCFGBuilder took 471.17 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 162.3 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:12,543 INFO L168 Benchmark]: TraceAbstraction took 441.21 ms. Allocated memory is still 204.5 MB. Free memory was 162.3 MB in the beginning and 145.0 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:12,547 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 366.98 ms. Allocated memory is still 148.4 MB. Free memory was 104.8 MB in the beginning and 94.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.19 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 94.4 MB in the beginning and 182.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 471.17 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 162.3 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 441.21 ms. Allocated memory is still 204.5 MB. Free memory was 162.3 MB in the beginning and 145.0 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 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 FALSE !(!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