/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/res1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:39:29,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:39:29,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:39:30,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:39:30,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:39:30,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:39:30,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:39:30,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:39:30,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:39:30,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:39:30,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:39:30,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:39:30,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:39:30,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:39:30,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:39:30,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:39:30,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:39:30,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:39:30,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:39:30,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:39:30,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:39:30,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:39:30,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:39:30,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:39:30,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:39:30,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:39:30,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:39:30,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:39:30,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:39:30,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:39:30,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:39:30,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:39:30,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:39:30,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:39:30,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:39:30,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:39:30,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:39:30,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:39:30,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:39:30,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:39:30,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:39:30,132 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 19:39:30,179 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:39:30,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:39:30,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:39:30,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:39:30,182 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:39:30,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:39:30,182 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:39:30,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:39:30,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:39:30,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:39:30,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:39:30,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:39:30,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:39:30,184 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:39:30,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:39:30,184 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:39:30,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:39:30,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:39:30,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:39:30,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:39:30,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:39:30,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:39:30,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:39:30,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:39:30,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:39:30,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:39:30,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:39:30,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:39:30,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:39:30,187 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:39:30,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:39:30,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:39:30,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:39:30,595 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:39:30,596 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:39:30,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1f.c [2020-10-26 19:39:30,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fc3fef3b/cba1d9dcc7a44d9f9c57090ac0caa347/FLAG8b0b6034a [2020-10-26 19:39:31,344 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:39:31,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res1f.c [2020-10-26 19:39:31,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fc3fef3b/cba1d9dcc7a44d9f9c57090ac0caa347/FLAG8b0b6034a [2020-10-26 19:39:31,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fc3fef3b/cba1d9dcc7a44d9f9c57090ac0caa347 [2020-10-26 19:39:31,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:39:31,712 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:39:31,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:39:31,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:39:31,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:39:31,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:39:31" (1/1) ... [2020-10-26 19:39:31,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cdc68fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:31, skipping insertion in model container [2020-10-26 19:39:31,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:39:31" (1/1) ... [2020-10-26 19:39:31,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:39:31,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:39:31,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:39:31,962 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:39:31,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:39:32,006 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:39:32,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:32 WrapperNode [2020-10-26 19:39:32,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:39:32,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:39:32,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:39:32,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:39:32,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:32" (1/1) ... [2020-10-26 19:39:32,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:32" (1/1) ... [2020-10-26 19:39:32,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:32" (1/1) ... [2020-10-26 19:39:32,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:32" (1/1) ... [2020-10-26 19:39:32,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:32" (1/1) ... [2020-10-26 19:39:32,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:32" (1/1) ... [2020-10-26 19:39:32,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:32" (1/1) ... [2020-10-26 19:39:32,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:39:32,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:39:32,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:39:32,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:39:32,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:32" (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 19:39:32,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:39:32,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:39:32,171 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:39:32,171 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-26 19:39:32,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:39:32,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:39:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:39:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:39:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:39:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:39:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-26 19:39:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:39:32,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:39:32,173 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 19:39:32,173 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:39:32,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 19:39:32,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:39:32,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:39:32,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:39:32,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:39:32,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:39:32,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:39:32,638 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:39:32,639 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-26 19:39:32,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:39:32 BoogieIcfgContainer [2020-10-26 19:39:32,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:39:32,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:39:32,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:39:32,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:39:32,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:39:31" (1/3) ... [2020-10-26 19:39:32,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7725fb0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:39:32, skipping insertion in model container [2020-10-26 19:39:32,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:32" (2/3) ... [2020-10-26 19:39:32,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7725fb0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:39:32, skipping insertion in model container [2020-10-26 19:39:32,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:39:32" (3/3) ... [2020-10-26 19:39:32,652 INFO L111 eAbstractionObserver]: Analyzing ICFG res1f.c [2020-10-26 19:39:32,666 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:39:32,673 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:39:32,688 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:39:32,732 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:39:32,732 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:39:32,732 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:39:32,732 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:39:32,732 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:39:32,733 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:39:32,733 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:39:32,733 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:39:32,756 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-26 19:39:32,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-26 19:39:32,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:39:32,768 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] [2020-10-26 19:39:32,769 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:39:32,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:39:32,784 INFO L82 PathProgramCache]: Analyzing trace with hash -181434534, now seen corresponding path program 1 times [2020-10-26 19:39:32,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:39:32,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506765882] [2020-10-26 19:39:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:39:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:39:33,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:39:33,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:39:33,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:39:33,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:39:33,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:39:34,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:39:35,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:39:35,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-26 19:39:35,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 19:39:35,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2325 [2020-10-26 19:39:35,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:39:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:39:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:39:35,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 19:39:35,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 19:39:35,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:39:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:39:35,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:39:35,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:39:35,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:39:35,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:39:35,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:39:35,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:39:35,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:39:35,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:39:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:39:35,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:39:35,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 19:39:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:39:35,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:39:35,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:39:35,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:39:35,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:39:35,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:39:35,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:39:35,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:39:35,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:39:35,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:39:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:39:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:39:35,492 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 19:39:35,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506765882] [2020-10-26 19:39:35,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:39:35,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 19:39:35,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641730010] [2020-10-26 19:39:35,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:39:35,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:39:35,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:39:35,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:39:35,525 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 5 states. [2020-10-26 19:39:35,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:39:35,809 INFO L93 Difference]: Finished difference Result 77 states and 104 transitions. [2020-10-26 19:39:35,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:39:35,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-26 19:39:35,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:39:35,819 INFO L225 Difference]: With dead ends: 77 [2020-10-26 19:39:35,820 INFO L226 Difference]: Without dead ends: 35 [2020-10-26 19:39:35,824 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 19:39:35,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-26 19:39:35,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-26 19:39:35,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-26 19:39:35,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-10-26 19:39:35,872 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 26 [2020-10-26 19:39:35,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:39:35,872 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-10-26 19:39:35,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:39:35,872 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-10-26 19:39:35,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-26 19:39:35,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:39:35,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:39:35,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:39:35,874 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:39:35,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:39:35,875 INFO L82 PathProgramCache]: Analyzing trace with hash -697842092, now seen corresponding path program 1 times [2020-10-26 19:39:35,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:39:35,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751568901] [2020-10-26 19:39:35,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:39:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 19:39:35,908 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-26 19:39:35,909 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 19:39:35,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:39:35,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:39:35 BoogieIcfgContainer [2020-10-26 19:39:35,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 19:39:35,936 INFO L168 Benchmark]: Toolchain (without parser) took 4228.07 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 116.9 MB in the beginning and 151.4 MB in the end (delta: -34.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 19:39:35,937 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 160.4 MB. Free memory is still 133.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 19:39:35,938 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.87 ms. Allocated memory is still 160.4 MB. Free memory was 116.2 MB in the beginning and 140.9 MB in the end (delta: -24.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. [2020-10-26 19:39:35,939 INFO L168 Benchmark]: Boogie Preprocessor took 54.03 ms. Allocated memory is still 160.4 MB. Free memory was 140.9 MB in the beginning and 142.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 3.9 MB. Max. memory is 8.0 GB. [2020-10-26 19:39:35,940 INFO L168 Benchmark]: RCFGBuilder took 578.20 ms. Allocated memory is still 160.4 MB. Free memory was 142.3 MB in the beginning and 124.3 MB in the end (delta: 18.0 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-26 19:39:35,941 INFO L168 Benchmark]: TraceAbstraction took 3289.45 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 123.7 MB in the beginning and 151.4 MB in the end (delta: -27.7 MB). Peak memory consumption was 5.4 MB. Max. memory is 8.0 GB. [2020-10-26 19:39:35,945 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 160.4 MB. Free memory is still 133.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 293.87 ms. Allocated memory is still 160.4 MB. Free memory was 116.2 MB in the beginning and 140.9 MB in the end (delta: -24.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.03 ms. Allocated memory is still 160.4 MB. Free memory was 140.9 MB in the beginning and 142.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 3.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 578.20 ms. Allocated memory is still 160.4 MB. Free memory was 142.3 MB in the beginning and 124.3 MB in the end (delta: 18.0 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3289.45 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 123.7 MB in the beginning and 151.4 MB in the end (delta: -27.7 MB). Peak memory consumption was 5.4 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] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L30] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 1 [L33] i=0 [L33] COND TRUE i