/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SHALLOWEST --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 language data_model -i ../../../trunk/examples/svcomp/array-fpi/ifeqn1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:37:49,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:37:49,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:37:49,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:37:49,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:37:49,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:37:49,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:37:49,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:37:49,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:37:49,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:37:49,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:37:49,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:37:49,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:37:49,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:37:49,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:37:49,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:37:49,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:37:49,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:37:49,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:37:49,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:37:49,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:37:49,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:37:49,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:37:49,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:37:49,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:37:49,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:37:49,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:37:49,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:37:49,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:37:49,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:37:49,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:37:49,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:37:49,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:37:49,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:37:49,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:37:49,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:37:49,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:37:49,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:37:49,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:37:49,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:37:49,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:37:49,233 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 [2020-10-26 19:37:49,279 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:37:49,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:37:49,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:37:49,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:37:49,285 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:37:49,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:37:49,285 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:37:49,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:37:49,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:37:49,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:37:49,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:37:49,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:37:49,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:37:49,288 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:37:49,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:37:49,288 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:37:49,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:37:49,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:37:49,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:37:49,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:37:49,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:37:49,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:37:49,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:37:49,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:37:49,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:37:49,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:37:49,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:37:49,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:37:49,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:37:49,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:37:49,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:37:49,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:37:49,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:37:49,753 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:37:49,754 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:37:49,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn1f.c [2020-10-26 19:37:49,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8c5c9371/0ad392ef5ba241d5a2b3e87e2e601bd9/FLAG8978954b8 [2020-10-26 19:37:50,369 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:37:50,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifeqn1f.c [2020-10-26 19:37:50,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8c5c9371/0ad392ef5ba241d5a2b3e87e2e601bd9/FLAG8978954b8 [2020-10-26 19:37:50,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8c5c9371/0ad392ef5ba241d5a2b3e87e2e601bd9 [2020-10-26 19:37:50,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:37:50,753 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:37:50,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:37:50,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:37:50,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:37:50,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:37:50" (1/1) ... [2020-10-26 19:37:50,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2171815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:50, skipping insertion in model container [2020-10-26 19:37:50,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:37:50" (1/1) ... [2020-10-26 19:37:50,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:37:50,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:37:50,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:37:50,966 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:37:51,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:37:51,037 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:37:51,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:51 WrapperNode [2020-10-26 19:37:51,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:37:51,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:37:51,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:37:51,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:37:51,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:51" (1/1) ... [2020-10-26 19:37:51,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:51" (1/1) ... [2020-10-26 19:37:51,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:51" (1/1) ... [2020-10-26 19:37:51,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:51" (1/1) ... [2020-10-26 19:37:51,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:51" (1/1) ... [2020-10-26 19:37:51,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:51" (1/1) ... [2020-10-26 19:37:51,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:51" (1/1) ... [2020-10-26 19:37:51,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:37:51,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:37:51,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:37:51,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:37:51,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:51" (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 [2020-10-26 19:37:51,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:37:51,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:37:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:37:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-26 19:37:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:37:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:37:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:37:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:37:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:37:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:37:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-26 19:37:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:37:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:37:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 19:37:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:37:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 19:37:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:37:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:37:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:37:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:37:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:37:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:37:51,832 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:37:51,833 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 19:37:51,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:37:51 BoogieIcfgContainer [2020-10-26 19:37:51,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:37:51,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:37:51,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:37:51,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:37:51,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:37:50" (1/3) ... [2020-10-26 19:37:51,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54624ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:37:51, skipping insertion in model container [2020-10-26 19:37:51,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:51" (2/3) ... [2020-10-26 19:37:51,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54624ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:37:51, skipping insertion in model container [2020-10-26 19:37:51,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:37:51" (3/3) ... [2020-10-26 19:37:51,843 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn1f.c [2020-10-26 19:37:51,855 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:37:51,860 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:37:51,873 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:37:51,899 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:37:51,899 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:37:51,899 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:37:51,899 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:37:51,899 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:37:51,899 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:37:51,900 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:37:51,900 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:37:51,915 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-26 19:37:51,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 19:37:51,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:37:51,922 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] [2020-10-26 19:37:51,922 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:37:51,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:37:51,929 INFO L82 PathProgramCache]: Analyzing trace with hash -996507287, now seen corresponding path program 1 times [2020-10-26 19:37:51,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:37:51,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062530328] [2020-10-26 19:37:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:37:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:37:52,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:37:52,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:37:52,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:37:52,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062530328] [2020-10-26 19:37:52,320 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-10-26 19:37:52,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:37:52,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-26 19:37:52,321 ERROR L205 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-10-26 19:37:52,322 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 19:37:52,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:37:52,358 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-26 19:37:52,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:37:52 BoogieIcfgContainer [2020-10-26 19:37:52,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 19:37:52,363 INFO L168 Benchmark]: Toolchain (without parser) took 1612.21 ms. Allocated memory is still 152.0 MB. Free memory was 127.5 MB in the beginning and 112.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2020-10-26 19:37:52,365 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory was 124.1 MB in the beginning and 124.0 MB in the end (delta: 77.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 19:37:52,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.51 ms. Allocated memory is still 152.0 MB. Free memory was 126.9 MB in the beginning and 116.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-26 19:37:52,369 INFO L168 Benchmark]: Boogie Preprocessor took 90.70 ms. Allocated memory is still 152.0 MB. Free memory was 116.6 MB in the beginning and 115.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-26 19:37:52,371 INFO L168 Benchmark]: RCFGBuilder took 701.86 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 133.4 MB in the end (delta: -18.5 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-10-26 19:37:52,372 INFO L168 Benchmark]: TraceAbstraction took 522.56 ms. Allocated memory is still 152.0 MB. Free memory was 132.9 MB in the beginning and 112.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-26 19:37:52,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory was 124.1 MB in the beginning and 124.0 MB in the end (delta: 77.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 284.51 ms. Allocated memory is still 152.0 MB. Free memory was 126.9 MB in the beginning and 116.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.70 ms. Allocated memory is still 152.0 MB. Free memory was 116.6 MB in the beginning and 115.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 701.86 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 133.4 MB in the end (delta: -18.5 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 522.56 ms. Allocated memory is still 152.0 MB. Free memory was 132.9 MB in the beginning and 112.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: 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: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND TRUE !cond [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 [L40] i=0 [L49] i=0 [L49] COND TRUE i