/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/ms2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:38:22,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:38:22,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:38:22,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:38:22,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:38:22,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:38:22,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:38:22,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:38:22,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:38:22,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:38:22,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:38:22,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:38:22,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:38:22,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:38:22,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:38:22,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:38:22,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:38:22,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:38:22,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:38:22,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:38:22,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:38:22,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:38:22,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:38:22,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:38:22,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:38:22,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:38:22,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:38:22,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:38:22,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:38:22,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:38:22,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:38:22,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:38:22,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:38:22,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:38:22,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:38:22,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:38:22,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:38:22,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:38:22,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:38:22,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:38:22,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:38:22,502 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 19:38:22,528 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:38:22,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:38:22,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:38:22,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:38:22,531 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:38:22,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:38:22,531 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:38:22,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:38:22,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:38:22,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:38:22,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:38:22,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:38:22,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:38:22,533 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:38:22,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:38:22,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:38:22,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:38:22,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:38:22,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:38:22,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:38:22,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:38:22,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:38:22,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:38:22,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:38:22,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:38:22,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:38:22,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:38:22,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:38:22,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:38:22,537 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:38:23,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:38:23,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:38:23,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:38:23,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:38:23,089 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:38:23,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms2f.c [2020-10-26 19:38:23,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a1821f87/d8b4757f6dcc43a68e716371683c0cfc/FLAGfbe445120 [2020-10-26 19:38:23,794 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:38:23,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ms2f.c [2020-10-26 19:38:23,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a1821f87/d8b4757f6dcc43a68e716371683c0cfc/FLAGfbe445120 [2020-10-26 19:38:24,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a1821f87/d8b4757f6dcc43a68e716371683c0cfc [2020-10-26 19:38:24,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:38:24,173 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:38:24,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:38:24,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:38:24,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:38:24,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:38:24" (1/1) ... [2020-10-26 19:38:24,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57907db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:24, skipping insertion in model container [2020-10-26 19:38:24,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:38:24" (1/1) ... [2020-10-26 19:38:24,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:38:24,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:38:24,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:38:24,398 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:38:24,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:38:24,440 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:38:24,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:24 WrapperNode [2020-10-26 19:38:24,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:38:24,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:38:24,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:38:24,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:38:24,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:24" (1/1) ... [2020-10-26 19:38:24,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:24" (1/1) ... [2020-10-26 19:38:24,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:24" (1/1) ... [2020-10-26 19:38:24,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:24" (1/1) ... [2020-10-26 19:38:24,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:24" (1/1) ... [2020-10-26 19:38:24,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:24" (1/1) ... [2020-10-26 19:38:24,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:24" (1/1) ... [2020-10-26 19:38:24,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:38:24,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:38:24,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:38:24,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:38:24,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:24" (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 19:38:24,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:38:24,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:38:24,571 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:38:24,571 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-26 19:38:24,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:38:24,571 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:38:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:38:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:38:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:38:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:38:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-26 19:38:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:38:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:38:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 19:38:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:38:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 19:38:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:38:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:38:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:38:24,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:38:24,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:38:24,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:38:25,195 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:38:25,195 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 19:38:25,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:38:25 BoogieIcfgContainer [2020-10-26 19:38:25,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:38:25,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:38:25,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:38:25,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:38:25,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:38:24" (1/3) ... [2020-10-26 19:38:25,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3b5843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:38:25, skipping insertion in model container [2020-10-26 19:38:25,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:24" (2/3) ... [2020-10-26 19:38:25,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3b5843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:38:25, skipping insertion in model container [2020-10-26 19:38:25,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:38:25" (3/3) ... [2020-10-26 19:38:25,214 INFO L111 eAbstractionObserver]: Analyzing ICFG ms2f.c [2020-10-26 19:38:25,230 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:38:25,237 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:38:25,252 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:38:25,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:38:25,300 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:38:25,300 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:38:25,300 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:38:25,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:38:25,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:38:25,301 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:38:25,301 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:38:25,330 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-26 19:38:25,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-26 19:38:25,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:38:25,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:38:25,338 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:38:25,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:38:25,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1361575079, now seen corresponding path program 1 times [2020-10-26 19:38:25,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:38:25,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810484511] [2020-10-26 19:38:25,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:38:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:38:25,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:38:25,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:38:25,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:38:26,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:38:26,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-26 19:38:26,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:38:26,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-10-26 19:38:26,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:38:26,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:38:26,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:38:26,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 19:38:26,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 19:38:26,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:38:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:38:26,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:38:26,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:38:26,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:38:26,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:38:26,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 19:38:26,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:38:26,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:38:26,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:38:26,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:38:26,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:38:26,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 19:38:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:38:26,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:38:26,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:38:26,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:38:26,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:38:26,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:38:26,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 19:38:26,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:38:26,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:38:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:38:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:38:26,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:38:26,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:38:26,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810484511] [2020-10-26 19:38:26,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:38:26,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 19:38:26,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630482160] [2020-10-26 19:38:26,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:38:26,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:38:26,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:38:26,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:38:26,246 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 5 states. [2020-10-26 19:38:26,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:38:26,477 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2020-10-26 19:38:26,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:38:26,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-26 19:38:26,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:38:26,487 INFO L225 Difference]: With dead ends: 65 [2020-10-26 19:38:26,488 INFO L226 Difference]: Without dead ends: 28 [2020-10-26 19:38:26,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 19:38:26,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-26 19:38:26,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-26 19:38:26,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-26 19:38:26,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-26 19:38:26,540 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2020-10-26 19:38:26,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:38:26,540 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-26 19:38:26,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:38:26,541 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-26 19:38:26,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 19:38:26,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:38:26,542 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] [2020-10-26 19:38:26,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:38:26,543 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:38:26,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:38:26,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1619095335, now seen corresponding path program 1 times [2020-10-26 19:38:26,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:38:26,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243347523] [2020-10-26 19:38:26,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:38:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 19:38:26,588 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-26 19:38:26,588 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 19:38:26,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:38:26,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:38:26 BoogieIcfgContainer [2020-10-26 19:38:26,617 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 19:38:26,620 INFO L168 Benchmark]: Toolchain (without parser) took 2450.20 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 48.8 MB in the end (delta: 77.5 MB). Peak memory consumption was 77.0 MB. Max. memory is 8.0 GB. [2020-10-26 19:38:26,634 INFO L168 Benchmark]: CDTParser took 1.51 ms. Allocated memory is still 151.0 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 19:38:26,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.90 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-26 19:38:26,638 INFO L168 Benchmark]: Boogie Preprocessor took 42.42 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-26 19:38:26,640 INFO L168 Benchmark]: RCFGBuilder took 713.41 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 130.0 MB in the end (delta: -15.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. [2020-10-26 19:38:26,641 INFO L168 Benchmark]: TraceAbstraction took 1415.21 ms. Allocated memory is still 151.0 MB. Free memory was 130.0 MB in the beginning and 48.8 MB in the end (delta: 81.2 MB). Peak memory consumption was 80.7 MB. Max. memory is 8.0 GB. [2020-10-26 19:38:26,645 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.51 ms. Allocated memory is still 151.0 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 265.90 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.42 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 713.41 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 130.0 MB in the end (delta: -15.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1415.21 ms. Allocated memory is still 151.0 MB. Free memory was 130.0 MB in the beginning and 48.8 MB in the end (delta: 81.2 MB). Peak memory consumption was 80.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a 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] i=0 [L31] COND TRUE i N) [L15] COND TRUE !(cond) [L15] CALL reach_error() [L10] __assert_fail("0", "ms2f.c", 10, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 37 SDslu, 23 SDs, 0 SdLazy, 58 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1302 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...