/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/loop-invariants/eq1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:37:15,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:37:15,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:37:15,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:37:15,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:37:15,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:37:15,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:37:15,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:37:15,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:37:15,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:37:15,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:37:15,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:37:15,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:37:15,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:37:15,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:37:15,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:37:15,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:37:15,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:37:15,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:37:15,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:37:15,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:37:15,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:37:15,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:37:15,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:37:15,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:37:15,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:37:15,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:37:15,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:37:15,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:37:15,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:37:15,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:37:15,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:37:15,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:37:15,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:37:15,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:37:15,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:37:15,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:37:15,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:37:15,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:37:15,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:37:15,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:37:15,389 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 01:37:15,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:37:15,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:37:15,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:37:15,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:37:15,418 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:37:15,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:37:15,418 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:37:15,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:37:15,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:37:15,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:37:15,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:37:15,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:37:15,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:37:15,420 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:37:15,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:37:15,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:37:15,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:37:15,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:37:15,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:37:15,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:37:15,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:37:15,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:37:15,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:37:15,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:37:15,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:37:15,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:37:15,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:37:15,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:37:15,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:37:15,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:37:15,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:37:15,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:37:15,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:37:15,825 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:37:15,828 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:37:15,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq1.c [2020-10-27 01:37:15,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b19c182d5/a8a3202c9fd34ece949c39dab5964b54/FLAGdabc6a56b [2020-10-27 01:37:16,639 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:37:16,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invariants/eq1.c [2020-10-27 01:37:16,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b19c182d5/a8a3202c9fd34ece949c39dab5964b54/FLAGdabc6a56b [2020-10-27 01:37:17,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b19c182d5/a8a3202c9fd34ece949c39dab5964b54 [2020-10-27 01:37:17,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:37:17,026 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:37:17,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:37:17,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:37:17,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:37:17,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:37:17" (1/1) ... [2020-10-27 01:37:17,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1732d00d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:17, skipping insertion in model container [2020-10-27 01:37:17,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:37:17" (1/1) ... [2020-10-27 01:37:17,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:37:17,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:37:17,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:37:17,284 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:37:17,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:37:17,318 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:37:17,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:17 WrapperNode [2020-10-27 01:37:17,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:37:17,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:37:17,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:37:17,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:37:17,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:17" (1/1) ... [2020-10-27 01:37:17,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:17" (1/1) ... [2020-10-27 01:37:17,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:17" (1/1) ... [2020-10-27 01:37:17,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:17" (1/1) ... [2020-10-27 01:37:17,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:17" (1/1) ... [2020-10-27 01:37:17,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:17" (1/1) ... [2020-10-27 01:37:17,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:17" (1/1) ... [2020-10-27 01:37:17,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:37:17,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:37:17,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:37:17,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:37:17,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:17" (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 01:37:17,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:37:17,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:37:17,431 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:37:17,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 01:37:17,431 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:37:17,431 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:37:17,431 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:37:17,431 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:37:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:37:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 01:37:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:37:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:37:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:37:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:37:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:37:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:37:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:37:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:37:17,866 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:37:17,866 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 01:37:17,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:37:17 BoogieIcfgContainer [2020-10-27 01:37:17,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:37:17,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:37:17,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:37:17,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:37:17,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:37:17" (1/3) ... [2020-10-27 01:37:17,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365ad68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:37:17, skipping insertion in model container [2020-10-27 01:37:17,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:17" (2/3) ... [2020-10-27 01:37:17,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365ad68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:37:17, skipping insertion in model container [2020-10-27 01:37:17,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:37:17" (3/3) ... [2020-10-27 01:37:17,882 INFO L111 eAbstractionObserver]: Analyzing ICFG eq1.c [2020-10-27 01:37:17,899 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:37:17,904 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:37:17,920 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:37:17,965 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:37:17,965 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:37:17,965 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:37:17,965 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:37:17,965 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:37:17,966 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:37:17,966 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:37:17,966 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:37:18,003 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-27 01:37:18,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 01:37:18,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:18,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:18,011 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:18,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:18,021 INFO L82 PathProgramCache]: Analyzing trace with hash 346045792, now seen corresponding path program 1 times [2020-10-27 01:37:18,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:18,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614232887] [2020-10-27 01:37:18,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:18,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:18,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:18,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:18,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 01:37:18,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:37:18,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-10-27 01:37:18,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:37:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:37:18,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:37:18,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:37:18,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:18,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:18,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:18,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:18,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:18,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:37:18,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:18,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:18,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:18,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:18,968 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 01:37:18,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614232887] [2020-10-27 01:37:18,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:18,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:37:18,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624913280] [2020-10-27 01:37:18,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:37:18,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:18,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:37:18,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:37:18,995 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states. [2020-10-27 01:37:19,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:19,214 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2020-10-27 01:37:19,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:37:19,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-27 01:37:19,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:19,223 INFO L225 Difference]: With dead ends: 34 [2020-10-27 01:37:19,223 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 01:37:19,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:37:19,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 01:37:19,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 01:37:19,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 01:37:19,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 01:37:19,256 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-27 01:37:19,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:19,256 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 01:37:19,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:37:19,257 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 01:37:19,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 01:37:19,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:37:19,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 01:37:19,421 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 01:37:19,422 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 01:37:19,422 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 01:37:19,422 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 01:37:19,423 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:37:19,423 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-27 01:37:19,423 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:37:19,423 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:37:19,423 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 01:37:19,423 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 01:37:19,424 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:37:19,424 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 11 25) the Hoare annotation is: true [2020-10-27 01:37:19,424 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 11 25) no Hoare annotation was computed. [2020-10-27 01:37:19,424 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-10-27 01:37:19,424 INFO L274 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2020-10-27 01:37:19,424 INFO L270 CegarLoopResult]: At program point L17-2(lines 16 22) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2020-10-27 01:37:19,425 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 22) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2020-10-27 01:37:19,425 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 11 25) no Hoare annotation was computed. [2020-10-27 01:37:19,425 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-27 01:37:19,425 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-27 01:37:19,425 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-27 01:37:19,426 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-27 01:37:19,426 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-27 01:37:19,426 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-27 01:37:19,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:37:19 BoogieIcfgContainer [2020-10-27 01:37:19,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:37:19,448 INFO L168 Benchmark]: Toolchain (without parser) took 2427.71 ms. Allocated memory is still 157.3 MB. Free memory was 133.3 MB in the beginning and 53.0 MB in the end (delta: 80.3 MB). Peak memory consumption was 81.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:37:19,449 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 157.3 MB. Free memory is still 129.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:37:19,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.87 ms. Allocated memory is still 157.3 MB. Free memory was 132.7 MB in the beginning and 123.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:37:19,451 INFO L168 Benchmark]: Boogie Preprocessor took 37.98 ms. Allocated memory is still 157.3 MB. Free memory was 123.3 MB in the beginning and 121.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:37:19,452 INFO L168 Benchmark]: RCFGBuilder took 510.60 ms. Allocated memory is still 157.3 MB. Free memory was 121.8 MB in the beginning and 108.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:37:19,454 INFO L168 Benchmark]: TraceAbstraction took 1573.42 ms. Allocated memory is still 157.3 MB. Free memory was 108.4 MB in the beginning and 53.0 MB in the end (delta: 55.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:37:19,458 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 157.3 MB. Free memory is still 129.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 288.87 ms. Allocated memory is still 157.3 MB. Free memory was 132.7 MB in the beginning and 123.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.98 ms. Allocated memory is still 157.3 MB. Free memory was 123.3 MB in the beginning and 121.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 510.60 ms. Allocated memory is still 157.3 MB. Free memory was 121.8 MB in the beginning and 108.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1573.42 ms. Allocated memory is still 157.3 MB. Free memory was 108.4 MB in the beginning and 53.0 MB in the end (delta: 55.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x == w && z == y - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 17 SDslu, 23 SDs, 0 SdLazy, 30 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 12 NumberOfFragments, 53 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 128 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 649 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...