/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/mods.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:14:58,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:14:58,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:14:58,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:14:58,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:14:58,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:14:58,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:14:58,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:14:58,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:14:58,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:14:58,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:14:58,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:14:58,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:14:58,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:14:58,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:14:58,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:14:58,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:14:58,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:14:58,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:14:58,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:14:58,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:14:58,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:14:58,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:14:58,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:14:58,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:14:58,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:14:58,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:14:58,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:14:58,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:14:58,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:14:58,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:14:58,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:14:58,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:14:58,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:14:58,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:14:58,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:14:58,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:14:58,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:14:58,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:14:58,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:14:58,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:14:58,236 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 [2020-10-28 09:14:58,284 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:14:58,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:14:58,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:14:58,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:14:58,289 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:14:58,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:14:58,290 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:14:58,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:14:58,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:14:58,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:14:58,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:14:58,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:14:58,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:14:58,292 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:14:58,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:14:58,293 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:14:58,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:14:58,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:14:58,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:14:58,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:14:58,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:14:58,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:14:58,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:14:58,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:14:58,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:14:58,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:14:58,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:14:58,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:14:58,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:14:58,296 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:14:58,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:14:58,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:14:58,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:14:58,783 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:14:58,784 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:14:58,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/mods.c [2020-10-28 09:14:58,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f004a4dad/d80b0042126140de80b8e28c0a042059/FLAGc2aff50b9 [2020-10-28 09:14:59,668 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:14:59,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/mods.c [2020-10-28 09:14:59,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f004a4dad/d80b0042126140de80b8e28c0a042059/FLAGc2aff50b9 [2020-10-28 09:14:59,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f004a4dad/d80b0042126140de80b8e28c0a042059 [2020-10-28 09:15:00,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:15:00,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:15:00,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:15:00,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:15:00,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:15:00,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:15:00" (1/1) ... [2020-10-28 09:15:00,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e730c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:15:00, skipping insertion in model container [2020-10-28 09:15:00,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:15:00" (1/1) ... [2020-10-28 09:15:00,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:15:00,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:15:00,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:15:00,252 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:15:00,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:15:00,302 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:15:00,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:15:00 WrapperNode [2020-10-28 09:15:00,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:15:00,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:15:00,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:15:00,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:15:00,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:15:00" (1/1) ... [2020-10-28 09:15:00,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:15:00" (1/1) ... [2020-10-28 09:15:00,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:15:00" (1/1) ... [2020-10-28 09:15:00,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:15:00" (1/1) ... [2020-10-28 09:15:00,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:15:00" (1/1) ... [2020-10-28 09:15:00,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:15:00" (1/1) ... [2020-10-28 09:15:00,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:15:00" (1/1) ... [2020-10-28 09:15:00,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:15:00,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:15:00,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:15:00,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:15:00,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:15:00" (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 [2020-10-28 09:15:00,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:15:00,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:15:00,456 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:15:00,456 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 09:15:00,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:15:00,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:15:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:15:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:15:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:15:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:15:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 09:15:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:15:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:15:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 09:15:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:15:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 09:15:00,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:15:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:15:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:15:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:15:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:15:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:15:01,091 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:15:01,092 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-28 09:15:01,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:15:01 BoogieIcfgContainer [2020-10-28 09:15:01,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:15:01,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:15:01,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:15:01,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:15:01,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:15:00" (1/3) ... [2020-10-28 09:15:01,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260dcc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:15:01, skipping insertion in model container [2020-10-28 09:15:01,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:15:00" (2/3) ... [2020-10-28 09:15:01,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260dcc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:15:01, skipping insertion in model container [2020-10-28 09:15:01,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:15:01" (3/3) ... [2020-10-28 09:15:01,107 INFO L111 eAbstractionObserver]: Analyzing ICFG mods.c [2020-10-28 09:15:01,121 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:15:01,127 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:15:01,142 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:15:01,189 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:15:01,190 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:15:01,190 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:15:01,190 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:15:01,190 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:15:01,190 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:15:01,191 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:15:01,191 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:15:01,216 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-28 09:15:01,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 09:15:01,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:15:01,228 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] [2020-10-28 09:15:01,228 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:15:01,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:15:01,239 INFO L82 PathProgramCache]: Analyzing trace with hash -386611775, now seen corresponding path program 1 times [2020-10-28 09:15:01,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:15:01,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875155740] [2020-10-28 09:15:01,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:15:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:15:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:01,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:01,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:01,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:01,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:02,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:03,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:03,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:03,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:05,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:15:05,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 09:15:05,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:15:05,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4027 [2020-10-28 09:15:05,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:15:05,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:15:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:15:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 09:15:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:15:05,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 09:15:05,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:15:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:15:05,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:05,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:15:05,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:15:05,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:15:05,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 09:15:05,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:15:05,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:15:05,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:15:05,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:15:05,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:15:05,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:15:05,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:15:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:15:05,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:05,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:15:05,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:15:05,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:15:05,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:15:05,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:15:05,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:15:05,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:15:05,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 09:15:05,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:15:05,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:15:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:15:05,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875155740] [2020-10-28 09:15:05,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:15:05,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:15:05,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858845812] [2020-10-28 09:15:05,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:15:05,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:15:05,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:15:05,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:15:05,765 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-28 09:15:05,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:15:05,906 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2020-10-28 09:15:05,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:15:05,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-28 09:15:05,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:15:05,916 INFO L225 Difference]: With dead ends: 75 [2020-10-28 09:15:05,916 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 09:15:05,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:15:05,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 09:15:05,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-28 09:15:05,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-28 09:15:05,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-28 09:15:05,964 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 27 [2020-10-28 09:15:05,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:15:05,965 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-28 09:15:05,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:15:05,965 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-28 09:15:05,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 09:15:05,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:15:05,966 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] [2020-10-28 09:15:05,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:15:05,967 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:15:05,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:15:05,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1914210815, now seen corresponding path program 1 times [2020-10-28 09:15:05,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:15:05,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208098344] [2020-10-28 09:15:05,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:15:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:15:05,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:06,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:06,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:06,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:06,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:06,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:06,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:06,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:07,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:15:07,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 09:15:07,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:15:07,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1787 [2020-10-28 09:15:07,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:15:07,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:15:07,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:15:07,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:15:07,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:15:07,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:15:07,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:15:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:15:07,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:07,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:15:07,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:15:07,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:15:07,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:15:07,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:15:07,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:15:07,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:15:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:15:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:15:07,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:15:07,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:15:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:15:07,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:15:07,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:15:07,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:15:07,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:15:07,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:15:07,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:15:07,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:15:07,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:15:07,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:15:07,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:15:07,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:15:07,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:15:07,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208098344] [2020-10-28 09:15:07,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:15:07,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:15:07,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19808238] [2020-10-28 09:15:07,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:15:07,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:15:07,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:15:07,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:15:07,890 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2020-10-28 09:15:08,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:15:08,160 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2020-10-28 09:15:08,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:15:08,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-28 09:15:08,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:15:08,163 INFO L225 Difference]: With dead ends: 62 [2020-10-28 09:15:08,163 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 09:15:08,164 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 [2020-10-28 09:15:08,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 09:15:08,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-28 09:15:08,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-28 09:15:08,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-28 09:15:08,178 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 27 [2020-10-28 09:15:08,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:15:08,179 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-28 09:15:08,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:15:08,179 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-28 09:15:08,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 09:15:08,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:15:08,181 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, 1] [2020-10-28 09:15:08,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:15:08,181 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:15:08,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:15:08,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1148507143, now seen corresponding path program 1 times [2020-10-28 09:15:08,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:15:08,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339295261] [2020-10-28 09:15:08,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:15:08,210 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-28 09:15:08,211 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-28 09:15:08,211 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:15:08,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:15:08,245 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-28 09:15:08,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:15:08 BoogieIcfgContainer [2020-10-28 09:15:08,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:15:08,255 INFO L168 Benchmark]: Toolchain (without parser) took 8239.97 ms. Allocated memory was 151.0 MB in the beginning and 232.8 MB in the end (delta: 81.8 MB). Free memory was 125.9 MB in the beginning and 87.0 MB in the end (delta: 38.9 MB). Peak memory consumption was 121.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:15:08,257 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 120.8 MB in the beginning and 120.8 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:15:08,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.57 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 114.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 09:15:08,260 INFO L168 Benchmark]: Boogie Preprocessor took 50.22 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 113.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 09:15:08,262 INFO L168 Benchmark]: RCFGBuilder took 735.08 ms. Allocated memory is still 151.0 MB. Free memory was 112.8 MB in the beginning and 129.6 MB in the end (delta: -16.8 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2020-10-28 09:15:08,264 INFO L168 Benchmark]: TraceAbstraction took 7148.44 ms. Allocated memory was 151.0 MB in the beginning and 232.8 MB in the end (delta: 81.8 MB). Free memory was 129.1 MB in the beginning and 87.0 MB in the end (delta: 42.0 MB). Peak memory consumption was 123.3 MB. Max. memory is 8.0 GB. [2020-10-28 09:15:08,276 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 120.8 MB in the beginning and 120.8 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 285.57 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 114.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.22 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 113.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 735.08 ms. Allocated memory is still 151.0 MB. Free memory was 112.8 MB in the beginning and 129.6 MB in the end (delta: -16.8 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7148.44 ms. Allocated memory was 151.0 MB in the beginning and 232.8 MB in the end (delta: 81.8 MB). Free memory was 129.1 MB in the beginning and 87.0 MB in the end (delta: 42.0 MB). Peak memory consumption was 123.3 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] long long sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i