/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-benchs/rlim_invariant.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:40:15,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:40:15,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:40:15,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:40:15,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:40:15,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:40:15,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:40:15,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:40:15,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:40:15,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:40:15,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:40:15,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:40:15,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:40:15,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:40:15,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:40:15,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:40:15,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:40:15,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:40:15,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:40:15,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:40:15,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:40:15,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:40:15,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:40:15,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:40:15,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:40:15,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:40:15,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:40:15,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:40:15,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:40:15,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-27 19:40:15,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:40:15,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:40:15,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:40:15,277 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 19:40:15,311 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:40:15,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:40:15,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:40:15,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:40:15,314 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:40:15,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:40:15,314 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:40:15,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:40:15,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:40:15,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:40:15,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:40:15,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:40:15,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:40:15,315 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:40:15,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:40:15,316 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:40:15,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:40:15,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:40:15,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:40:15,317 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:40:15,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:40:15,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:40:15,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:40:15,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:40:15,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:40:15,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:40:15,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:40:15,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:40:15,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:40:15,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:40:15,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:40:15,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:40:15,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:40:15,719 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:40:15,719 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:40:15,720 INFO L432 ainManager$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 19:40:15,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20f29d153/eda0b681acdf4f28973e03da7e00f012/FLAGfa1550baa [2020-10-27 19:40:16,470 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:40:16,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/rlim_invariant.c.p+cfa-reducer.c [2020-10-27 19:40:16,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20f29d153/eda0b681acdf4f28973e03da7e00f012/FLAGfa1550baa [2020-10-27 19:40:16,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20f29d153/eda0b681acdf4f28973e03da7e00f012 [2020-10-27 19:40:16,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:40:16,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:40:16,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:40:16,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:40:16,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:40:16,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:40:16" (1/1) ... [2020-10-27 19:40:16,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@349fbdff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:40:16, skipping insertion in model container [2020-10-27 19:40:16,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:40:16" (1/1) ... [2020-10-27 19:40:16,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:40:16,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:40:17,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:40:17,081 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:40:17,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:40:17,125 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:40:17,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:40:17 WrapperNode [2020-10-27 19:40:17,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:40:17,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:40:17,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:40:17,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:40:17,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:40:17" (1/1) ... [2020-10-27 19:40:17,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:40:17" (1/1) ... [2020-10-27 19:40:17,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:40:17" (1/1) ... [2020-10-27 19:40:17,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:40:17" (1/1) ... [2020-10-27 19:40:17,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:40:17" (1/1) ... [2020-10-27 19:40:17,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:40:17" (1/1) ... [2020-10-27 19:40:17,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:40:17" (1/1) ... [2020-10-27 19:40:17,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:40:17,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:40:17,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:40:17,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:40:17,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:40:17" (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 19:40:17,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:40:17,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:40:17,266 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:40:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 19:40:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:40:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:40:17,269 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:40:17,269 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:40:17,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:40:17,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 19:40:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 19:40:17,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 19:40:17,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:40:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:40:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:40:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:40:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:40:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:40:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:40:17,848 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:40:17,849 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 19:40:17,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:40:17 BoogieIcfgContainer [2020-10-27 19:40:17,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:40:17,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:40:17,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:40:17,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:40:17,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:40:16" (1/3) ... [2020-10-27 19:40:17,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e9240b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:40:17, skipping insertion in model container [2020-10-27 19:40:17,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:40:17" (2/3) ... [2020-10-27 19:40:17,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e9240b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:40:17, skipping insertion in model container [2020-10-27 19:40:17,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:40:17" (3/3) ... [2020-10-27 19:40:17,867 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.p+cfa-reducer.c [2020-10-27 19:40:17,881 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:40:17,886 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:40:17,901 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:40:17,933 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:40:17,933 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:40:17,933 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:40:17,933 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:40:17,933 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:40:17,934 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:40:17,934 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:40:17,934 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:40:17,952 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-27 19:40:17,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 19:40:17,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:40:17,960 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 19:40:17,960 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:40:17,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:40:17,967 INFO L82 PathProgramCache]: Analyzing trace with hash -613538375, now seen corresponding path program 1 times [2020-10-27 19:40:17,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:40:17,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943606081] [2020-10-27 19:40:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:40:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:40:18,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:40:18,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:40:18,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:40:18,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:40:18,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 19:40:18,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:40:18,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-10-27 19:40:18,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:40:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:40:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 19:40:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 19:40:18,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:40:18,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:40:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:40:18,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:40:18,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:40:18,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:40:18,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:40:18,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:40:18,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:40:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:40:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:40:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:40:18,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:40:18,994 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 19:40:18,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943606081] [2020-10-27 19:40:18,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:40:18,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:40:18,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40847643] [2020-10-27 19:40:19,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:40:19,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:40:19,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:40:19,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:40:19,022 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-10-27 19:40:19,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:40:19,374 INFO L93 Difference]: Finished difference Result 61 states and 84 transitions. [2020-10-27 19:40:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 19:40:19,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-27 19:40:19,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:40:19,391 INFO L225 Difference]: With dead ends: 61 [2020-10-27 19:40:19,391 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 19:40:19,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:40:19,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 19:40:19,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2020-10-27 19:40:19,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 19:40:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2020-10-27 19:40:19,481 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 21 [2020-10-27 19:40:19,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:40:19,482 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2020-10-27 19:40:19,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:40:19,483 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2020-10-27 19:40:19,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 19:40:19,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:40:19,486 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 19:40:19,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:40:19,486 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:40:19,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:40:19,487 INFO L82 PathProgramCache]: Analyzing trace with hash -115760556, now seen corresponding path program 1 times [2020-10-27 19:40:19,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:40:19,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860921689] [2020-10-27 19:40:19,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:40:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:40:19,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:40:19,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:40:19,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:40:19,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 19:40:19,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:40:19,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 19:40:19,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:40:19,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:40:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 19:40:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:40:19,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:40:19,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:40:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:40:19,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:40:19,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:40:19,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:40:19,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:40:19,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 19:40:19,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:40:19,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:40:19,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:40:19,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:40:19,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:40:19,768 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 19:40:19,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860921689] [2020-10-27 19:40:19,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:40:19,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:40:19,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275701215] [2020-10-27 19:40:19,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:40:19,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:40:19,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:40:19,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:40:19,778 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand 4 states. [2020-10-27 19:40:19,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:40:19,940 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2020-10-27 19:40:19,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 19:40:19,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-27 19:40:19,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:40:19,942 INFO L225 Difference]: With dead ends: 51 [2020-10-27 19:40:19,942 INFO L226 Difference]: Without dead ends: 27 [2020-10-27 19:40:19,943 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 19:40:19,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-27 19:40:19,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-27 19:40:19,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-27 19:40:19,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2020-10-27 19:40:19,953 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 21 [2020-10-27 19:40:19,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:40:19,953 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-10-27 19:40:19,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:40:19,954 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2020-10-27 19:40:19,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 19:40:19,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:40:19,955 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 19:40:19,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:40:19,955 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:40:19,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:40:19,956 INFO L82 PathProgramCache]: Analyzing trace with hash 406742447, now seen corresponding path program 1 times [2020-10-27 19:40:19,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:40:19,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618602597] [2020-10-27 19:40:19,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:40:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:40:19,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:40:19,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:40:19,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 19:40:19,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:40:19,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 19:40:19,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:40:19,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:40:19,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 19:40:20,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:40:20,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:40:20,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:40:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:40:20,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:40:20,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:40:20,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:40:20,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:40:20,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:40:20,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:40:20,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:40:20,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:40:20,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:40:20,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:40:20,072 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 19:40:20,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618602597] [2020-10-27 19:40:20,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:40:20,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:40:20,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482829169] [2020-10-27 19:40:20,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:40:20,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:40:20,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:40:20,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:40:20,076 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 4 states. [2020-10-27 19:40:20,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:40:20,184 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2020-10-27 19:40:20,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 19:40:20,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-27 19:40:20,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:40:20,186 INFO L225 Difference]: With dead ends: 49 [2020-10-27 19:40:20,186 INFO L226 Difference]: Without dead ends: 26 [2020-10-27 19:40:20,187 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 19:40:20,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-27 19:40:20,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-27 19:40:20,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 19:40:20,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-27 19:40:20,194 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 21 [2020-10-27 19:40:20,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:40:20,195 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-27 19:40:20,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:40:20,195 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-27 19:40:20,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 19:40:20,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:40:20,196 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 19:40:20,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:40:20,196 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:40:20,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:40:20,197 INFO L82 PathProgramCache]: Analyzing trace with hash 2029669972, now seen corresponding path program 1 times [2020-10-27 19:40:20,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:40:20,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350688599] [2020-10-27 19:40:20,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:40:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:40:20,210 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:40:20,210 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:40:20,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:40:20,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:40:20 BoogieIcfgContainer [2020-10-27 19:40:20,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:40:20,235 INFO L168 Benchmark]: Toolchain (without parser) took 3415.34 ms. Allocated memory was 125.8 MB in the beginning and 157.3 MB in the end (delta: 31.5 MB). Free memory was 101.4 MB in the beginning and 75.8 MB in the end (delta: 25.6 MB). Peak memory consumption was 58.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:40:20,236 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 87.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:40:20,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.29 ms. Allocated memory is still 125.8 MB. Free memory was 100.7 MB in the beginning and 90.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:40:20,238 INFO L168 Benchmark]: Boogie Preprocessor took 47.52 ms. Allocated memory is still 125.8 MB. Free memory was 90.6 MB in the beginning and 89.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:40:20,239 INFO L168 Benchmark]: RCFGBuilder took 675.26 ms. Allocated memory was 125.8 MB in the beginning and 157.3 MB in the end (delta: 31.5 MB). Free memory was 89.0 MB in the beginning and 139.8 MB in the end (delta: -50.8 MB). Peak memory consumption was 21.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:40:20,239 INFO L168 Benchmark]: TraceAbstraction took 2374.64 ms. Allocated memory is still 157.3 MB. Free memory was 139.1 MB in the beginning and 75.8 MB in the end (delta: 63.3 MB). Peak memory consumption was 63.2 MB. Max. memory is 8.0 GB. [2020-10-27 19:40:20,243 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 87.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 301.29 ms. Allocated memory is still 125.8 MB. Free memory was 100.7 MB in the beginning and 90.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.52 ms. Allocated memory is still 125.8 MB. Free memory was 90.6 MB in the beginning and 89.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 675.26 ms. Allocated memory was 125.8 MB in the beginning and 157.3 MB in the end (delta: 31.5 MB). Free memory was 89.0 MB in the beginning and 139.8 MB in the end (delta: -50.8 MB). Peak memory consumption was 21.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2374.64 ms. Allocated memory is still 157.3 MB. Free memory was 139.1 MB in the beginning and 75.8 MB in the end (delta: 63.3 MB). Peak memory consumption was 63.2 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: 2.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 122 SDtfs, 138 SDslu, 33 SDs, 0 SdLazy, 142 SolverSat, 6 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, 0.4s 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, 17 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s 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...