/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-fpi/s1iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:40:07,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:40:07,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:40:07,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:40:07,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:40:07,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:40:07,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:40:07,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:40:07,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:40:07,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:40:07,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:40:07,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:40:07,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:40:07,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:40:07,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:40:07,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:40:07,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:40:07,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:40:07,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:40:07,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:40:07,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:40:07,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:40:07,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:40:07,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:40:07,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:40:07,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:40:07,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:40:07,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:40:07,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:40:07,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:40:07,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:40:07,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:40:07,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:40:07,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:40:07,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:40:07,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:40:07,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:40:07,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:40:07,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:40:07,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:40:07,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:40:07,302 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 14:40:07,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:40:07,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:40:07,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:40:07,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:40:07,359 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:40:07,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:40:07,360 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:40:07,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:40:07,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:40:07,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:40:07,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:40:07,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:40:07,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:40:07,362 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:40:07,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:40:07,362 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:40:07,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:40:07,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:40:07,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:40:07,363 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:40:07,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:40:07,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:40:07,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:40:07,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:40:07,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:40:07,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:40:07,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:40:07,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:40:07,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:40:07,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:40:07,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:40:07,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:40:07,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:40:07,869 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:40:07,870 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:40:07,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s1iff.c [2020-10-27 14:40:07,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69acd8668/cbfd532e60664eea8e8588abb3f26085/FLAGa5aed7d08 [2020-10-27 14:40:08,522 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:40:08,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s1iff.c [2020-10-27 14:40:08,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69acd8668/cbfd532e60664eea8e8588abb3f26085/FLAGa5aed7d08 [2020-10-27 14:40:08,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69acd8668/cbfd532e60664eea8e8588abb3f26085 [2020-10-27 14:40:08,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:40:08,873 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:40:08,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:40:08,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:40:08,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:40:08,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:40:08" (1/1) ... [2020-10-27 14:40:08,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8fc02f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:08, skipping insertion in model container [2020-10-27 14:40:08,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:40:08" (1/1) ... [2020-10-27 14:40:08,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:40:08,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:40:09,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:40:09,076 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:40:09,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:40:09,118 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:40:09,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:09 WrapperNode [2020-10-27 14:40:09,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:40:09,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:40:09,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:40:09,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:40:09,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:09" (1/1) ... [2020-10-27 14:40:09,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:09" (1/1) ... [2020-10-27 14:40:09,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:09" (1/1) ... [2020-10-27 14:40:09,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:09" (1/1) ... [2020-10-27 14:40:09,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:09" (1/1) ... [2020-10-27 14:40:09,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:09" (1/1) ... [2020-10-27 14:40:09,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:09" (1/1) ... [2020-10-27 14:40:09,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:40:09,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:40:09,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:40:09,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:40:09,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:40:09,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:40:09,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:40:09,249 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:40:09,250 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:40:09,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:40:09,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:40:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:40:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:40:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:40:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:40:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:40:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:40:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:40:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 14:40:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:40:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 14:40:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:40:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:40:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:40:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:40:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:40:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:40:09,856 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:40:09,856 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 14:40:09,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:40:09 BoogieIcfgContainer [2020-10-27 14:40:09,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:40:09,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:40:09,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:40:09,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:40:09,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:40:08" (1/3) ... [2020-10-27 14:40:09,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69433569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:40:09, skipping insertion in model container [2020-10-27 14:40:09,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:09" (2/3) ... [2020-10-27 14:40:09,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69433569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:40:09, skipping insertion in model container [2020-10-27 14:40:09,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:40:09" (3/3) ... [2020-10-27 14:40:09,872 INFO L111 eAbstractionObserver]: Analyzing ICFG s1iff.c [2020-10-27 14:40:09,884 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:40:09,890 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:40:09,903 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:40:09,948 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:40:09,948 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:40:09,948 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:40:09,948 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:40:09,949 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:40:09,949 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:40:09,949 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:40:09,949 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:40:09,971 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-27 14:40:09,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:40:09,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:40:09,980 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] [2020-10-27 14:40:09,981 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:40:09,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:40:09,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1361575079, now seen corresponding path program 1 times [2020-10-27 14:40:09,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:40:09,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159634507] [2020-10-27 14:40:09,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:40:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:10,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:10,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:10,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:10,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:10,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:40:10,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:40:10,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-27 14:40:10,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:10,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:10,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:40:10,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:10,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:40:10,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:40:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:10,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:10,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:10,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:40:10,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:10,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 14:40:10,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:10,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:10,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:40:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:10,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:10,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:10,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:10,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:10,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:40:10,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:40:10,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:40:10,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:10,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:40:10,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159634507] [2020-10-27 14:40:10,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:40:10,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:40:10,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182553903] [2020-10-27 14:40:10,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:40:10,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:40:10,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:40:10,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:40:10,779 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-27 14:40:10,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:40:10,910 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-27 14:40:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:40:10,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-27 14:40:10,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:40:10,920 INFO L225 Difference]: With dead ends: 59 [2020-10-27 14:40:10,920 INFO L226 Difference]: Without dead ends: 26 [2020-10-27 14:40:10,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:40:10,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-27 14:40:10,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-27 14:40:10,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 14:40:10,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-27 14:40:10,967 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2020-10-27 14:40:10,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:40:10,967 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-27 14:40:10,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:40:10,968 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-27 14:40:10,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:40:10,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:40:10,969 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] [2020-10-27 14:40:10,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:40:10,970 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:40:10,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:40:10,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1173980304, now seen corresponding path program 1 times [2020-10-27 14:40:10,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:40:10,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057639932] [2020-10-27 14:40:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:40:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:11,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:11,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:11,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:11,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:40:11,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:40:11,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-27 14:40:11,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:40:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:40:11,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:40:11,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:40:11,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:40:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:11,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:11,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:11,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:40:11,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:11,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:40:11,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:11,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:11,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:11,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:11,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:11,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:40:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:11,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:11,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:11,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:11,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:40:11,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:40:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:11,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:40:11,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:40:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:40:11,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057639932] [2020-10-27 14:40:11,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:40:11,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:40:11,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108565015] [2020-10-27 14:40:11,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:40:11,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:40:11,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:40:11,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:40:11,523 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2020-10-27 14:40:11,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:40:11,786 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-27 14:40:11,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:40:11,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-27 14:40:11,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:40:11,788 INFO L225 Difference]: With dead ends: 39 [2020-10-27 14:40:11,788 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 14:40:11,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:40:11,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 14:40:11,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 14:40:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 14:40:11,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-27 14:40:11,803 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2020-10-27 14:40:11,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:40:11,804 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-27 14:40:11,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:40:11,804 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-27 14:40:11,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 14:40:11,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:40:11,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:40:11,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:40:11,808 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:40:11,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:40:11,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1619095335, now seen corresponding path program 1 times [2020-10-27 14:40:11,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:40:11,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795271480] [2020-10-27 14:40:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:40:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:11,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:12,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:12,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:13,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:13,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 14:40:13,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:40:13,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1432 [2020-10-27 14:40:13,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:40:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 14:40:13,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 14:40:13,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 14:40:13,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:40:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:13,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:13,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:13,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:40:13,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:40:13,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:13,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:13,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:40:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:40:13,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:40:13,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:40:13,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:40:13,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:40:13,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:40:13,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:40:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:40:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:40:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:40:13,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:40:13,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:40:13,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795271480] [2020-10-27 14:40:13,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:40:13,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:40:13,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919807539] [2020-10-27 14:40:13,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:40:13,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:40:13,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:40:13,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:40:13,751 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 12 states. [2020-10-27 14:40:14,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:40:14,642 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2020-10-27 14:40:14,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:40:14,642 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-27 14:40:14,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:40:14,647 INFO L225 Difference]: With dead ends: 44 [2020-10-27 14:40:14,647 INFO L226 Difference]: Without dead ends: 37 [2020-10-27 14:40:14,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:40:14,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-27 14:40:14,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-10-27 14:40:14,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 14:40:14,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-27 14:40:14,669 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2020-10-27 14:40:14,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:40:14,669 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-27 14:40:14,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:40:14,669 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-27 14:40:14,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 14:40:14,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:40:14,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:40:14,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:40:14,672 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:40:14,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:40:14,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1995813591, now seen corresponding path program 1 times [2020-10-27 14:40:14,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:40:14,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266948137] [2020-10-27 14:40:14,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:40:14,695 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-27 14:40:14,696 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-27 14:40:14,696 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 14:40:14,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:40:14,719 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-27 14:40:14,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:40:14 BoogieIcfgContainer [2020-10-27 14:40:14,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 14:40:14,723 INFO L168 Benchmark]: Toolchain (without parser) took 5853.24 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 135.1 MB in the beginning and 162.9 MB in the end (delta: -27.9 MB). Peak memory consumption was 5.8 MB. Max. memory is 8.0 GB. [2020-10-27 14:40:14,724 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 160.4 MB. Free memory is still 132.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 14:40:14,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.84 ms. Allocated memory is still 160.4 MB. Free memory was 134.5 MB in the beginning and 124.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 14:40:14,727 INFO L168 Benchmark]: Boogie Preprocessor took 43.58 ms. Allocated memory is still 160.4 MB. Free memory was 124.0 MB in the beginning and 122.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 14:40:14,729 INFO L168 Benchmark]: RCFGBuilder took 693.81 ms. Allocated memory is still 160.4 MB. Free memory was 122.3 MB in the beginning and 141.6 MB in the end (delta: -19.3 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. [2020-10-27 14:40:14,732 INFO L168 Benchmark]: TraceAbstraction took 4857.41 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 141.1 MB in the beginning and 163.4 MB in the end (delta: -22.4 MB). Peak memory consumption was 11.2 MB. Max. memory is 8.0 GB. [2020-10-27 14:40:14,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 160.4 MB. Free memory is still 132.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 244.84 ms. Allocated memory is still 160.4 MB. Free memory was 134.5 MB in the beginning and 124.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.58 ms. Allocated memory is still 160.4 MB. Free memory was 124.0 MB in the beginning and 122.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 693.81 ms. Allocated memory is still 160.4 MB. Free memory was 122.3 MB in the beginning and 141.6 MB in the end (delta: -19.3 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4857.41 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 141.1 MB in the beginning and 163.4 MB in the end (delta: -22.4 MB). Peak memory consumption was 11.2 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] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i