/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=DEEPEST --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/modnf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:38:49,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:38:49,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:38:49,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:38:49,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:38:49,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:38:49,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:38:49,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:38:49,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:38:49,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:38:49,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:38:49,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:38:49,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:38:49,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:38:49,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:38:49,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:38:49,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:38:49,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:38:49,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:38:49,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:38:49,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:38:49,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:38:49,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:38:49,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:38:49,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:38:49,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:38:49,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:38:49,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:38:49,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:38:49,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:38:49,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:38:49,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:38:49,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:38:49,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:38:49,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:38:49,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:38:49,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:38:49,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:38:49,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:38:49,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:38:49,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:38:49,207 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 [2020-10-27 14:38:49,261 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:38:49,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:38:49,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:38:49,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:38:49,267 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:38:49,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:38:49,268 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:38:49,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:38:49,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:38:49,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:38:49,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:38:49,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:38:49,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:38:49,270 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:38:49,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:38:49,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:38:49,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:38:49,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:38:49,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:38:49,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:38:49,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:38:49,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:38:49,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:38:49,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:38:49,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:38:49,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:38:49,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:38:49,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:38:49,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:38:49,274 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:38:49,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:38:49,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:38:49,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:38:49,754 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:38:49,754 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:38:49,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modnf.c [2020-10-27 14:38:49,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96efb8388/1d9e327df4e74711a611b40527cb1877/FLAGdad95b0dc [2020-10-27 14:38:50,514 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:38:50,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/modnf.c [2020-10-27 14:38:50,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96efb8388/1d9e327df4e74711a611b40527cb1877/FLAGdad95b0dc [2020-10-27 14:38:50,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96efb8388/1d9e327df4e74711a611b40527cb1877 [2020-10-27 14:38:50,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:38:50,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:38:50,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:38:50,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:38:50,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:38:50,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:38:50" (1/1) ... [2020-10-27 14:38:50,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6175e918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:50, skipping insertion in model container [2020-10-27 14:38:50,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:38:50" (1/1) ... [2020-10-27 14:38:50,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:38:50,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:38:51,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:38:51,073 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:38:51,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:38:51,118 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:38:51,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:51 WrapperNode [2020-10-27 14:38:51,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:38:51,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:38:51,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:38:51,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:38:51,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:51" (1/1) ... [2020-10-27 14:38:51,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:51" (1/1) ... [2020-10-27 14:38:51,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:51" (1/1) ... [2020-10-27 14:38:51,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:51" (1/1) ... [2020-10-27 14:38:51,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:51" (1/1) ... [2020-10-27 14:38:51,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:51" (1/1) ... [2020-10-27 14:38:51,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:51" (1/1) ... [2020-10-27 14:38:51,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:38:51,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:38:51,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:38:51,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:38:51,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:51" (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 [2020-10-27 14:38:51,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:38:51,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:38:51,281 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:38:51,281 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:38:51,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:38:51,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:38:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:38:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:38:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:38:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:38:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:38:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:38:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:38:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 14:38:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:38:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 14:38:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:38:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:38:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:38:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:38:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:38:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:38:51,613 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:38:51,614 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:38:51,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:38:51 BoogieIcfgContainer [2020-10-27 14:38:51,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:38:51,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:38:51,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:38:51,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:38:51,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:38:50" (1/3) ... [2020-10-27 14:38:51,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792c3f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:38:51, skipping insertion in model container [2020-10-27 14:38:51,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:51" (2/3) ... [2020-10-27 14:38:51,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792c3f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:38:51, skipping insertion in model container [2020-10-27 14:38:51,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:38:51" (3/3) ... [2020-10-27 14:38:51,650 INFO L111 eAbstractionObserver]: Analyzing ICFG modnf.c [2020-10-27 14:38:51,666 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:38:51,672 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:38:51,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:38:51,722 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:38:51,722 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:38:51,722 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:38:51,722 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:38:51,722 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:38:51,723 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:38:51,723 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:38:51,723 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:38:51,746 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-27 14:38:51,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 14:38:51,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:51,755 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] [2020-10-27 14:38:51,756 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:51,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:51,764 INFO L82 PathProgramCache]: Analyzing trace with hash -391571351, now seen corresponding path program 1 times [2020-10-27 14:38:51,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:51,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559776623] [2020-10-27 14:38:51,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:52,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:52,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:52,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:52,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:53,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:53,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:38:53,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:38:53,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1230 [2020-10-27 14:38:53,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:53,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:38:53,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:38:53,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:38:53,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:38:53,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:38:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:53,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:53,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:53,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:38:53,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:38:53,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:38:53,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:38:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:53,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:53,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:38:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:38:53,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:53,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:38:53,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:38:53,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:38:53,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:38:53,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:38:53,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:38:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:38:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:38:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:38:53,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:38:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:38:53,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559776623] [2020-10-27 14:38:53,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:38:53,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 14:38:53,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681930270] [2020-10-27 14:38:53,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:38:53,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:38:53,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:38:53,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:38:53,498 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 6 states. [2020-10-27 14:38:53,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:38:53,837 INFO L93 Difference]: Finished difference Result 82 states and 109 transitions. [2020-10-27 14:38:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:38:53,839 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-27 14:38:53,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:38:53,848 INFO L225 Difference]: With dead ends: 82 [2020-10-27 14:38:53,848 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 14:38:53,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:38:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 14:38:53,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2020-10-27 14:38:53,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 14:38:53,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-10-27 14:38:53,933 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 23 [2020-10-27 14:38:53,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:38:53,934 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-10-27 14:38:53,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:38:53,935 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-10-27 14:38:53,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 14:38:53,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:53,937 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] [2020-10-27 14:38:53,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:38:53,937 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:53,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:53,941 INFO L82 PathProgramCache]: Analyzing trace with hash 385078571, now seen corresponding path program 1 times [2020-10-27 14:38:53,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:53,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708280827] [2020-10-27 14:38:53,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:38:53,975 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-27 14:38:53,975 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-27 14:38:53,975 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 14:38:53,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:38:53,999 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-27 14:38:54,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:38:53 BoogieIcfgContainer [2020-10-27 14:38:54,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 14:38:54,002 INFO L168 Benchmark]: Toolchain (without parser) took 3148.69 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 68.3 MB in the end (delta: 58.5 MB). Peak memory consumption was 59.6 MB. Max. memory is 8.0 GB. [2020-10-27 14:38:54,003 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 123.3 MB in the end (delta: 117.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 14:38:54,005 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.73 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 14:38:54,006 INFO L168 Benchmark]: Boogie Preprocessor took 82.50 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 114.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 14:38:54,007 INFO L168 Benchmark]: RCFGBuilder took 411.01 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 98.7 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-27 14:38:54,008 INFO L168 Benchmark]: TraceAbstraction took 2380.82 ms. Allocated memory is still 151.0 MB. Free memory was 98.3 MB in the beginning and 68.3 MB in the end (delta: 30.0 MB). Peak memory consumption was 31.3 MB. Max. memory is 8.0 GB. [2020-10-27 14:38:54,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 123.3 MB in the end (delta: 117.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 260.73 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.50 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 114.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 411.01 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 98.7 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2380.82 ms. Allocated memory is still 151.0 MB. Free memory was 98.3 MB in the beginning and 68.3 MB in the end (delta: 30.0 MB). Peak memory consumption was 31.3 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 FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i