/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-lopstr16/motivex.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:48:42,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:48:42,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:48:43,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:48:43,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:48:43,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:48:43,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:48:43,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:48:43,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:48:43,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:48:43,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:48:43,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:48:43,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:48:43,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:48:43,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:48:43,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:48:43,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:48:43,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:48:43,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:48:43,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:48:43,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:48:43,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:48:43,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:48:43,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:48:43,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:48:43,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:48:43,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:48:43,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:48:43,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:48:43,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:48:43,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:48:43,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:48:43,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:48:43,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:48:43,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:48:43,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:48:43,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:48:43,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:48:43,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:48:43,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:48:43,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:48:43,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 19:48:43,252 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:48:43,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:48:43,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:48:43,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:48:43,261 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:48:43,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:48:43,261 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:48:43,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:48:43,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:48:43,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:48:43,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:48:43,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:48:43,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:48:43,264 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:48:43,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:48:43,265 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:48:43,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:48:43,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:48:43,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:48:43,266 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:48:43,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:48:43,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:48:43,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:48:43,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:48:43,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:48:43,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:48:43,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:48:43,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:48:43,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:48:43,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:48:43,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:48:43,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:48:43,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:48:43,889 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:48:43,890 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:48:43,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-lopstr16/motivex.i [2020-10-26 19:48:43,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cc775e27/2e3ca5f1a3f74b058e3ad2ff9031c8ac/FLAG7c0f004bd [2020-10-26 19:48:44,780 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:48:44,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-lopstr16/motivex.i [2020-10-26 19:48:44,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cc775e27/2e3ca5f1a3f74b058e3ad2ff9031c8ac/FLAG7c0f004bd [2020-10-26 19:48:45,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cc775e27/2e3ca5f1a3f74b058e3ad2ff9031c8ac [2020-10-26 19:48:45,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:48:45,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:48:45,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:48:45,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:48:45,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:48:45,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:48:45" (1/1) ... [2020-10-26 19:48:45,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18bc73e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45, skipping insertion in model container [2020-10-26 19:48:45,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:48:45" (1/1) ... [2020-10-26 19:48:45,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:48:45,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:48:45,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:48:45,757 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:48:45,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:48:45,812 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:48:45,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45 WrapperNode [2020-10-26 19:48:45,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:48:45,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:48:45,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:48:45,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:48:45,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (1/1) ... [2020-10-26 19:48:45,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (1/1) ... [2020-10-26 19:48:45,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (1/1) ... [2020-10-26 19:48:45,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (1/1) ... [2020-10-26 19:48:45,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (1/1) ... [2020-10-26 19:48:45,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (1/1) ... [2020-10-26 19:48:45,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (1/1) ... [2020-10-26 19:48:45,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:48:45,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:48:45,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:48:45,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:48:45,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:48:45,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:48:45,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:48:45,982 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:48:45,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:48:45,984 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:48:45,984 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:48:45,985 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:48:45,985 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-26 19:48:45,985 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-26 19:48:45,986 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:48:45,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:48:45,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:48:45,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-26 19:48:45,988 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:48:45,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:48:45,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:48:45,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:48:45,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:48:45,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:48:45,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:48:46,634 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:48:46,634 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 19:48:46,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:48:46 BoogieIcfgContainer [2020-10-26 19:48:46,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:48:46,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:48:46,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:48:46,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:48:46,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:48:45" (1/3) ... [2020-10-26 19:48:46,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17aeffd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:48:46, skipping insertion in model container [2020-10-26 19:48:46,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:48:45" (2/3) ... [2020-10-26 19:48:46,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17aeffd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:48:46, skipping insertion in model container [2020-10-26 19:48:46,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:48:46" (3/3) ... [2020-10-26 19:48:46,650 INFO L111 eAbstractionObserver]: Analyzing ICFG motivex.i [2020-10-26 19:48:46,666 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:48:46,673 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:48:46,691 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:48:46,728 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:48:46,729 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:48:46,729 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:48:46,729 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:48:46,729 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:48:46,729 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:48:46,730 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:48:46,730 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:48:46,754 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-26 19:48:46,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 19:48:46,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:48:46,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:48:46,764 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:48:46,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:48:46,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1981251521, now seen corresponding path program 1 times [2020-10-26 19:48:46,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:48:46,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254577453] [2020-10-26 19:48:46,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:48:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:48:46,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:48:47,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:48:47,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:48:47,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:48:48,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:48:48,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-26 19:48:48,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:48:48,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1182 [2020-10-26 19:48:48,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:48:48,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 19:48:48,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 19:48:48,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 19:48:48,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 19:48:48,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:48:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:48:48,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:48:48,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:48:48,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:48:48,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:48:48,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 19:48:48,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:48:48,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:48:48,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:48:48,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 19:48:48,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:48:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:48:48,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254577453] [2020-10-26 19:48:48,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:48:48,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 19:48:48,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366298757] [2020-10-26 19:48:48,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 19:48:48,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:48:48,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 19:48:48,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 19:48:48,527 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 7 states. [2020-10-26 19:48:49,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:48:49,532 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2020-10-26 19:48:49,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 19:48:49,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-26 19:48:49,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:48:49,545 INFO L225 Difference]: With dead ends: 83 [2020-10-26 19:48:49,545 INFO L226 Difference]: Without dead ends: 37 [2020-10-26 19:48:49,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:48:49,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-26 19:48:49,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-26 19:48:49,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-26 19:48:49,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-26 19:48:49,611 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 18 [2020-10-26 19:48:49,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:48:49,612 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-26 19:48:49,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 19:48:49,613 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-26 19:48:49,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-26 19:48:49,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:48:49,614 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] [2020-10-26 19:48:49,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:48:49,615 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:48:49,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:48:49,616 INFO L82 PathProgramCache]: Analyzing trace with hash -62151596, now seen corresponding path program 1 times [2020-10-26 19:48:49,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:48:49,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210871041] [2020-10-26 19:48:49,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:48:49,635 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-26 19:48:49,635 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-26 19:48:49,635 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 19:48:49,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:48:49,663 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-26 19:48:49,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:48:49 BoogieIcfgContainer [2020-10-26 19:48:49,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 19:48:49,668 INFO L168 Benchmark]: Toolchain (without parser) took 4538.31 ms. Allocated memory was 151.0 MB in the beginning and 199.2 MB in the end (delta: 48.2 MB). Free memory was 126.9 MB in the beginning and 149.3 MB in the end (delta: -22.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. [2020-10-26 19:48:49,668 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 19:48:49,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.97 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 86.7 MB in the end (delta: 39.5 MB). Peak memory consumption was 40.2 MB. Max. memory is 8.0 GB. [2020-10-26 19:48:49,671 INFO L168 Benchmark]: Boogie Preprocessor took 63.81 ms. Allocated memory is still 151.0 MB. Free memory was 86.7 MB in the beginning and 85.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-26 19:48:49,672 INFO L168 Benchmark]: RCFGBuilder took 757.75 ms. Allocated memory is still 151.0 MB. Free memory was 85.2 MB in the beginning and 69.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-26 19:48:49,673 INFO L168 Benchmark]: TraceAbstraction took 3024.69 ms. Allocated memory was 151.0 MB in the beginning and 199.2 MB in the end (delta: 48.2 MB). Free memory was 68.9 MB in the beginning and 149.3 MB in the end (delta: -80.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 19:48:49,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 677.97 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 86.7 MB in the end (delta: 39.5 MB). Peak memory consumption was 40.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.81 ms. Allocated memory is still 151.0 MB. Free memory was 86.7 MB in the beginning and 85.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 757.75 ms. Allocated memory is still 151.0 MB. Free memory was 85.2 MB in the beginning and 69.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3024.69 ms. Allocated memory was 151.0 MB in the beginning and 199.2 MB in the end (delta: 48.2 MB). Free memory was 68.9 MB in the beginning and 149.3 MB in the end (delta: -80.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: 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: [L15-L18] struct S { unsigned short p; unsigned short q; } a[10000]; [L21] unsigned char k; [L22] int i; [L23] i = 0 [L23] COND TRUE i < 1000000 [L25] a[i].p = i [L26] a[i].q = i [L23] i++ [L23] COND FALSE !(i < 1000000) [L28] i = 0 [L28] COND FALSE !(i < 1000000) [L37] i = 0 [L37] COND TRUE i < 1000000 [L39] EXPR a[i].p [L39] EXPR a[i].q [L39] EXPR a[i].p == a[i].q || a[i].q == a[i].p * a[i].p [L39] EXPR a[i].q [L39] EXPR a[i].p [L39] EXPR a[i].p [L39] EXPR a[i].p == a[i].q || a[i].q == a[i].p * a[i].p [L39] CALL __VERIFIER_assert(a[i].p == a[i].q || a[i].q == a[i].p * a[i].p) [L13] COND TRUE !(cond) [L13] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "motivex.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 54 SDslu, 50 SDs, 0 SdLazy, 125 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1717 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...