/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/float-benchs/rlim_invariant.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:59:39,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:59:39,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:59:39,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:59:39,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:59:39,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:59:39,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:59:39,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:59:39,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:59:39,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:59:39,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:59:39,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:59:39,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:59:39,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:59:39,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:59:39,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:59:39,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:59:39,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:59:39,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:59:39,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:59:39,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:59:39,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:59:39,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:59:39,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:59:39,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:59:39,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:59:39,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:59:39,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:59:39,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:59:39,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-27 00:59:39,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:59:39,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:59:39,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:59:39,395 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 00:59:39,425 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:59:39,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:59:39,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:59:39,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:59:39,430 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:59:39,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:59:39,432 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:59:39,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:59:39,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:59:39,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:59:39,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:59:39,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:59:39,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:59:39,434 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:59:39,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:59:39,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:59:39,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:59:39,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:59:39,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:59:39,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:59:39,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:59:39,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:59:39,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:59:39,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:59:39,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:59:39,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:59:39,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:59:39,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:59:39,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:59:39,450 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:59:39,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:59:39,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:59:39,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:59:39,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:59:39,881 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:59:39,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2020-10-27 00:59:39,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5548877ff/887a6522377e4cb6b4a5ad7b3f8e818a/FLAG6bf4e296d [2020-10-27 00:59:40,543 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:59:40,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2020-10-27 00:59:40,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5548877ff/887a6522377e4cb6b4a5ad7b3f8e818a/FLAG6bf4e296d [2020-10-27 00:59:40,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5548877ff/887a6522377e4cb6b4a5ad7b3f8e818a [2020-10-27 00:59:40,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:59:40,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:59:40,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:59:40,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:59:40,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:59:40,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:59:40" (1/1) ... [2020-10-27 00:59:40,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52bca686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:59:40, skipping insertion in model container [2020-10-27 00:59:40,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:59:40" (1/1) ... [2020-10-27 00:59:40,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:59:40,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:59:41,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:59:41,200 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:59:41,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:59:41,251 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:59:41,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:59:41 WrapperNode [2020-10-27 00:59:41,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:59:41,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:59:41,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:59:41,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:59:41,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:59:41" (1/1) ... [2020-10-27 00:59:41,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:59:41" (1/1) ... [2020-10-27 00:59:41,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:59:41" (1/1) ... [2020-10-27 00:59:41,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:59:41" (1/1) ... [2020-10-27 00:59:41,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:59:41" (1/1) ... [2020-10-27 00:59:41,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:59:41" (1/1) ... [2020-10-27 00:59:41,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:59:41" (1/1) ... [2020-10-27 00:59:41,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:59:41,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:59:41,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:59:41,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:59:41,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:59:41" (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 00:59:41,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:59:41,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:59:41,394 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:59:41,395 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 00:59:41,395 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:59:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:59:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:59:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:59:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:59:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 00:59:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 00:59:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 00:59:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:59:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:59:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:59:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:59:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:59:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:59:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:59:41,770 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:59:41,770 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 00:59:41,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:59:41 BoogieIcfgContainer [2020-10-27 00:59:41,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:59:41,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:59:41,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:59:41,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:59:41,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:59:40" (1/3) ... [2020-10-27 00:59:41,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c63d917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:59:41, skipping insertion in model container [2020-10-27 00:59:41,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:59:41" (2/3) ... [2020-10-27 00:59:41,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c63d917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:59:41, skipping insertion in model container [2020-10-27 00:59:41,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:59:41" (3/3) ... [2020-10-27 00:59:41,783 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.p+cfa-reducer.c [2020-10-27 00:59:41,796 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:59:41,802 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:59:41,817 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:59:41,847 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:59:41,848 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:59:41,848 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:59:41,848 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:59:41,848 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:59:41,848 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:59:41,849 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:59:41,849 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:59:41,870 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-27 00:59:41,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 00:59:41,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:59:41,878 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] [2020-10-27 00:59:41,879 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:59:41,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:59:41,887 INFO L82 PathProgramCache]: Analyzing trace with hash -613538375, now seen corresponding path program 1 times [2020-10-27 00:59:41,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:59:41,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255364370] [2020-10-27 00:59:41,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:59:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:59:42,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:59:42,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:59:42,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:59:42,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:59:42,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 00:59:42,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:59:42,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 779 [2020-10-27 00:59:42,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:59:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:59:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 00:59:42,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:59:42,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:59:42,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:59:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:59:42,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:59:42,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:59:42,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:59:42,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:59:42,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:59:42,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:59:42,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:59:42,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:59:42,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:59:42,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:59:42,992 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 00:59:42,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255364370] [2020-10-27 00:59:42,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:59:42,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:59:42,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569425182] [2020-10-27 00:59:43,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:59:43,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:59:43,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:59:43,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:59:43,019 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2020-10-27 00:59:43,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:59:43,246 INFO L93 Difference]: Finished difference Result 60 states and 84 transitions. [2020-10-27 00:59:43,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 00:59:43,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-27 00:59:43,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:59:43,268 INFO L225 Difference]: With dead ends: 60 [2020-10-27 00:59:43,269 INFO L226 Difference]: Without dead ends: 25 [2020-10-27 00:59:43,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:59:43,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-27 00:59:43,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-27 00:59:43,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-27 00:59:43,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-10-27 00:59:43,345 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 21 [2020-10-27 00:59:43,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:59:43,345 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-10-27 00:59:43,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:59:43,346 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-10-27 00:59:43,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 00:59:43,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:59:43,348 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] [2020-10-27 00:59:43,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:59:43,349 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:59:43,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:59:43,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1009389150, now seen corresponding path program 1 times [2020-10-27 00:59:43,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:59:43,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052352328] [2020-10-27 00:59:43,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:59:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:59:43,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:59:43,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:59:43,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:59:43,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 00:59:43,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:59:43,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 00:59:43,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:59:43,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:59:43,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 00:59:43,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:59:43,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:59:43,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:59:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:59:43,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:59:43,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:59:43,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:59:43,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:59:43,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:59:43,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:59:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:59:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:59:43,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:59:43,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:59:43,609 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 00:59:43,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052352328] [2020-10-27 00:59:43,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:59:43,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:59:43,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525874492] [2020-10-27 00:59:43,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:59:43,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:59:43,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:59:43,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:59:43,613 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 4 states. [2020-10-27 00:59:43,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:59:43,728 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2020-10-27 00:59:43,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 00:59:43,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-27 00:59:43,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:59:43,730 INFO L225 Difference]: With dead ends: 45 [2020-10-27 00:59:43,730 INFO L226 Difference]: Without dead ends: 24 [2020-10-27 00:59:43,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:59:43,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-27 00:59:43,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-27 00:59:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-27 00:59:43,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-10-27 00:59:43,739 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 21 [2020-10-27 00:59:43,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:59:43,740 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-10-27 00:59:43,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:59:43,740 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-10-27 00:59:43,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 00:59:43,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:59:43,741 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] [2020-10-27 00:59:43,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:59:43,741 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:59:43,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:59:43,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1531892153, now seen corresponding path program 1 times [2020-10-27 00:59:43,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:59:43,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904984161] [2020-10-27 00:59:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:59:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:59:43,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:59:43,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:59:43,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 00:59:43,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:59:43,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:59:43,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:59:43,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 00:59:43,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 00:59:43,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 00:59:43,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:59:43,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:59:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:59:43,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:59:43,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:59:43,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:59:43,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:59:43,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:59:43,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:59:43,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:59:43,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:59:43,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:59:43,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:59:43,933 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 00:59:43,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904984161] [2020-10-27 00:59:43,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:59:43,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 00:59:43,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812168304] [2020-10-27 00:59:43,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:59:43,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:59:43,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:59:43,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:59:43,942 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 5 states. [2020-10-27 00:59:44,296 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-27 00:59:44,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:59:44,394 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-10-27 00:59:44,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 00:59:44,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-27 00:59:44,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:59:44,397 INFO L225 Difference]: With dead ends: 44 [2020-10-27 00:59:44,397 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 00:59:44,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:59:44,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 00:59:44,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2020-10-27 00:59:44,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 00:59:44,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-27 00:59:44,407 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 21 [2020-10-27 00:59:44,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:59:44,407 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-27 00:59:44,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:59:44,408 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-27 00:59:44,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 00:59:44,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:59:44,409 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] [2020-10-27 00:59:44,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:59:44,409 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:59:44,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:59:44,410 INFO L82 PathProgramCache]: Analyzing trace with hash 2029669972, now seen corresponding path program 1 times [2020-10-27 00:59:44,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:59:44,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748469828] [2020-10-27 00:59:44,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:59:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 00:59:44,424 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 00:59:44,424 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 00:59:44,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:59:44,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:59:44 BoogieIcfgContainer [2020-10-27 00:59:44,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 00:59:44,449 INFO L168 Benchmark]: Toolchain (without parser) took 3547.93 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 139.2 MB in the beginning and 162.5 MB in the end (delta: -23.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 8.0 GB. [2020-10-27 00:59:44,450 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory was 102.1 MB in the beginning and 102.1 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 00:59:44,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.85 ms. Allocated memory is still 162.5 MB. Free memory was 138.5 MB in the beginning and 128.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 00:59:44,452 INFO L168 Benchmark]: Boogie Preprocessor took 51.23 ms. Allocated memory is still 162.5 MB. Free memory was 128.4 MB in the beginning and 126.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 00:59:44,453 INFO L168 Benchmark]: RCFGBuilder took 467.27 ms. Allocated memory is still 162.5 MB. Free memory was 126.8 MB in the beginning and 142.8 MB in the end (delta: -16.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. [2020-10-27 00:59:44,454 INFO L168 Benchmark]: TraceAbstraction took 2671.28 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 142.1 MB in the beginning and 162.5 MB in the end (delta: -20.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 00:59:44,458 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory was 102.1 MB in the beginning and 102.1 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 343.85 ms. Allocated memory is still 162.5 MB. Free memory was 138.5 MB in the beginning and 128.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.23 ms. Allocated memory is still 162.5 MB. Free memory was 128.4 MB in the beginning and 126.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 467.27 ms. Allocated memory is still 162.5 MB. Free memory was 126.8 MB in the beginning and 142.8 MB in the end (delta: -16.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2671.28 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 142.1 MB in the beginning and 162.5 MB in the end (delta: -20.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 48, overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of to_real at line 20, overapproximation of someBinaryArithmeticFLOAToperation at line 50. Possible FailurePath: [L1] int __return_main; [L14] float main__X; [L15] float main__Y; [L16] float main__S; [L17] float main__R; [L18] float main__D; [L19] int main__i; [L20] main__Y = 0 [L21] main__i = 0 [L23] COND TRUE main__i < 100000 [L25] main__X = __VERIFIER_nondet_float() [L26] main__D = __VERIFIER_nondet_float() [L27] int main____CPAchecker_TMP_0; [L28] COND TRUE main__X >= -128.0 [L30] COND TRUE main__X <= 128.0 [L32] main____CPAchecker_TMP_0 = 1 [L34] COND TRUE main____CPAchecker_TMP_0 != 0 [L36] int main____CPAchecker_TMP_1; [L37] COND TRUE main__D >= 0.0 [L39] COND TRUE main__D <= 16.0 [L41] main____CPAchecker_TMP_1 = 1 [L43] COND TRUE main____CPAchecker_TMP_1 != 0 [L45] main__S = main__Y [L46] main__Y = main__X [L47] main__R = main__X - main__S [L48] COND TRUE main__R <= (-main__D) [L50] main__Y = main__S - main__D [L52] int main____CPAchecker_TMP_2; [L53] COND FALSE !(main__Y >= -129.0) [L79] main____CPAchecker_TMP_2 = 0 [L60] int __tmp_1; [L61] __tmp_1 = main____CPAchecker_TMP_2 [L62] int __VERIFIER_assert__cond; [L63] __VERIFIER_assert__cond = __tmp_1 [L64] COND TRUE __VERIFIER_assert__cond == 0 [L66] CALL reach_error() [L4] __assert_fail("0", "rlim_invariant.c.p+cfa-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 115 SDslu, 30 SDs, 0 SdLazy, 122 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 3340 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...