/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=NARROWEST --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 -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0682b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:18:11,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:18:11,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:18:11,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:18:11,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:18:11,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:18:11,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:18:11,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:18:11,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:18:11,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:18:11,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:18:11,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:18:11,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:18:11,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:18:11,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:18:11,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:18:11,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:18:11,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:18:11,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:18:11,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:18:11,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:18:11,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:18:11,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:18:11,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:18:11,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:18:11,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:18:11,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:18:11,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:18:11,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:18:11,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:18:11,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:18:11,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:18:11,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:18:11,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:18:11,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:18:11,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:18:11,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:18:11,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:18:11,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:18:11,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:18:11,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:18:11,202 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 [2020-10-13 10:18:11,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:18:11,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:18:11,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:18:11,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:18:11,227 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:18:11,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:18:11,228 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:18:11,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:18:11,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:18:11,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:18:11,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:18:11,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:18:11,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:18:11,229 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:18:11,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:18:11,229 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:18:11,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:18:11,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:18:11,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:18:11,230 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:18:11,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:18:11,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:18:11,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:18:11,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:18:11,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:18:11,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:18:11,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:18:11,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:18:11,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:18:11,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:18:11,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:18:11,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:18:11,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:18:11,538 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:18:11,539 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:18:11,539 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0682b.c [2020-10-13 10:18:11,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d82d97291/5c84a5c23c39458aa5c75c619814a2e6/FLAGe5b4e8db8 [2020-10-13 10:18:12,120 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:18:12,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0682b.c [2020-10-13 10:18:12,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d82d97291/5c84a5c23c39458aa5c75c619814a2e6/FLAGe5b4e8db8 [2020-10-13 10:18:12,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d82d97291/5c84a5c23c39458aa5c75c619814a2e6 [2020-10-13 10:18:12,472 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:18:12,474 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:18:12,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:12,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:18:12,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:18:12,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:12" (1/1) ... [2020-10-13 10:18:12,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9a5625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:12, skipping insertion in model container [2020-10-13 10:18:12,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:12" (1/1) ... [2020-10-13 10:18:12,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:18:12,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:18:12,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:12,871 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:18:12,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:18:12,960 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:18:12,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:12 WrapperNode [2020-10-13 10:18:12,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:18:12,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:18:12,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:18:12,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:18:12,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:12" (1/1) ... [2020-10-13 10:18:12,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:12" (1/1) ... [2020-10-13 10:18:12,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:12" (1/1) ... [2020-10-13 10:18:12,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:12" (1/1) ... [2020-10-13 10:18:13,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:12" (1/1) ... [2020-10-13 10:18:13,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:12" (1/1) ... [2020-10-13 10:18:13,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:12" (1/1) ... [2020-10-13 10:18:13,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:18:13,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:18:13,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:18:13,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:18:13,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:12" (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 [2020-10-13 10:18:13,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:18:13,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:18:13,106 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-13 10:18:13,106 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-13 10:18:13,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-13 10:18:13,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-13 10:18:13,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-13 10:18:13,108 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:18:13,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:18:13,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-13 10:18:13,108 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-13 10:18:13,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:18:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:18:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:18:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:18:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:18:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:18:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-13 10:18:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-13 10:18:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-13 10:18:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-13 10:18:13,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:18:13,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:18:13,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-13 10:18:13,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:18:13,862 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:18:13,863 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-13 10:18:13,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:13 BoogieIcfgContainer [2020-10-13 10:18:13,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:18:13,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:18:13,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:18:13,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:18:13,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:18:12" (1/3) ... [2020-10-13 10:18:13,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b702f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:13, skipping insertion in model container [2020-10-13 10:18:13,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:12" (2/3) ... [2020-10-13 10:18:13,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b702f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:13, skipping insertion in model container [2020-10-13 10:18:13,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:13" (3/3) ... [2020-10-13 10:18:13,877 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0682b.c [2020-10-13 10:18:13,887 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:18:13,896 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:18:13,910 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:18:13,935 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:18:13,935 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:18:13,935 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:18:13,935 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:18:13,936 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:18:13,936 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:18:13,936 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:18:13,936 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:18:13,959 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states. [2020-10-13 10:18:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 10:18:13,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:13,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:18:13,969 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:13,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:13,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1752602122, now seen corresponding path program 1 times [2020-10-13 10:18:13,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:13,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067822816] [2020-10-13 10:18:13,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:14,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:14,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:14,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:14,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:14,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 10:18:14,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:18:14,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-10-13 10:18:14,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:14,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:14,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 10:18:14,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:14,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 10:18:15,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:18:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:15,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:15,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:15,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:15,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:15,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 10:18:15,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:15,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:15,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:15,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:15,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:15,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:18:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:15,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:15,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:15,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:15,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:18:15,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:18:15,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 10:18:15,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:15,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:15,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:15,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:15,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:15,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:18:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:15,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:15,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:15,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:15,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:18:15,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:18:15,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 10:18:15,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:15,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:15,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:18:15,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:15,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:18:15,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067822816] [2020-10-13 10:18:15,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:18:15,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:18:15,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823349020] [2020-10-13 10:18:15,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:18:15,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:18:15,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:18:15,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:18:15,233 INFO L87 Difference]: Start difference. First operand 120 states. Second operand 4 states. [2020-10-13 10:18:15,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:18:15,688 INFO L93 Difference]: Finished difference Result 232 states and 362 transitions. [2020-10-13 10:18:15,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:18:15,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-13 10:18:15,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:18:15,702 INFO L225 Difference]: With dead ends: 232 [2020-10-13 10:18:15,702 INFO L226 Difference]: Without dead ends: 115 [2020-10-13 10:18:15,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:18:15,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-13 10:18:15,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-13 10:18:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 10:18:15,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 155 transitions. [2020-10-13 10:18:15,764 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 155 transitions. Word has length 27 [2020-10-13 10:18:15,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:18:15,764 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 155 transitions. [2020-10-13 10:18:15,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:18:15,764 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 155 transitions. [2020-10-13 10:18:15,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 10:18:15,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:15,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:18:15,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:18:15,767 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:15,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:15,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1500670579, now seen corresponding path program 1 times [2020-10-13 10:18:15,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:15,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641452401] [2020-10-13 10:18:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:15,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:16,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:16,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 10:18:16,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:16,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-13 10:18:16,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:18:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:18:16,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:18:16,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:16,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:18:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:16,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:16,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:16,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:18:16,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:16,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:18:16,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:16,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:16,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:16,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:16,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:16,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:18:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:16,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:16,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:16,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:18:16,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:16,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 10:18:16,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:16,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:18:16,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:16,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:18:16,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 10:18:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:18:16,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:18:16,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:18:16,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:18:16,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:18:16,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 10:18:16,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:18:16,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:18:16,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:18:16,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:18:16,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:18:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:18:16,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641452401] [2020-10-13 10:18:16,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:18:16,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:18:16,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375418784] [2020-10-13 10:18:16,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:18:16,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:18:16,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:18:16,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:18:16,217 INFO L87 Difference]: Start difference. First operand 115 states and 155 transitions. Second operand 5 states. [2020-10-13 10:18:16,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:18:16,605 INFO L93 Difference]: Finished difference Result 207 states and 286 transitions. [2020-10-13 10:18:16,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:18:16,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-13 10:18:16,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:18:16,609 INFO L225 Difference]: With dead ends: 207 [2020-10-13 10:18:16,609 INFO L226 Difference]: Without dead ends: 115 [2020-10-13 10:18:16,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:18:16,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-13 10:18:16,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-13 10:18:16,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 10:18:16,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 154 transitions. [2020-10-13 10:18:16,627 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 154 transitions. Word has length 30 [2020-10-13 10:18:16,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:18:16,627 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 154 transitions. [2020-10-13 10:18:16,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:18:16,627 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 154 transitions. [2020-10-13 10:18:16,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:18:16,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:18:16,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:18:16,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:18:16,629 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:18:16,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:18:16,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1682265256, now seen corresponding path program 1 times [2020-10-13 10:18:16,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:18:16,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102157690] [2020-10-13 10:18:16,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:18:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:18:16,697 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:18:16,698 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:18:16,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:18:16,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:18:16 BoogieIcfgContainer [2020-10-13 10:18:16,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:18:16,728 INFO L168 Benchmark]: Toolchain (without parser) took 4253.45 ms. Allocated memory was 140.5 MB in the beginning and 244.8 MB in the end (delta: 104.3 MB). Free memory was 102.1 MB in the beginning and 160.9 MB in the end (delta: -58.7 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:16,729 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:18:16,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.53 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.9 MB in the beginning and 175.9 MB in the end (delta: -74.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:16,732 INFO L168 Benchmark]: Boogie Preprocessor took 79.45 ms. Allocated memory is still 202.9 MB. Free memory was 175.9 MB in the beginning and 172.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:16,732 INFO L168 Benchmark]: RCFGBuilder took 827.15 ms. Allocated memory is still 202.9 MB. Free memory was 172.1 MB in the beginning and 122.6 MB in the end (delta: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:16,733 INFO L168 Benchmark]: TraceAbstraction took 2856.02 ms. Allocated memory was 202.9 MB in the beginning and 244.8 MB in the end (delta: 41.9 MB). Free memory was 121.9 MB in the beginning and 160.9 MB in the end (delta: -39.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:18:16,737 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 485.53 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.9 MB in the beginning and 175.9 MB in the end (delta: -74.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 79.45 ms. Allocated memory is still 202.9 MB. Free memory was 175.9 MB in the beginning and 172.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 827.15 ms. Allocated memory is still 202.9 MB. Free memory was 172.1 MB in the beginning and 122.6 MB in the end (delta: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2856.02 ms. Allocated memory was 202.9 MB in the beginning and 244.8 MB in the end (delta: 41.9 MB). Free memory was 121.9 MB in the beginning and 160.9 MB in the end (delta: -39.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 285]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 162, overapproximation of someUnaryDOUBLEoperation at line 52, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryDOUBLEComparisonOperation at line 284. Possible FailurePath: [L37-L42] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L44-L49] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L51-L58] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L60-L62] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L139-L140] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L276] double x = -1.0 / 0.0; [L277] double y = __VERIFIER_nondet_double(); [L279] CALL, EXPR isinf_double(x) [L246] __int32_t hx, lx; [L248] ieee_double_shape_type ew_u; [L249] ew_u.value = (x) [L250] EXPR ew_u.parts.msw [L250] (hx) = ew_u.parts.msw [L251] EXPR ew_u.parts.lsw [L251] (lx) = ew_u.parts.lsw [L253] hx &= 0x7fffffff [L254] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L255] hx = 0x7ff00000 - hx [L256] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L279] RET, EXPR isinf_double(x) [L279] EXPR isinf_double(x) && isfinite_double(y) [L279] CALL, EXPR isfinite_double(y) [L260] __int32_t hx; [L262] ieee_double_shape_type gh_u; [L263] gh_u.value = (x) [L264] EXPR gh_u.parts.msw [L264] (hx) = gh_u.parts.msw [L266] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L279] RET, EXPR isfinite_double(y) [L279] EXPR isinf_double(x) && isfinite_double(y) [L279] COND TRUE isinf_double(x) && isfinite_double(y) && y > 0.0 [L281] CALL, EXPR __ieee754_atan2(y, x) [L143] double z; [L144] __int32_t k, m, hx, hy, ix, iy; [L145] __uint32_t lx, ly; [L148] ieee_double_shape_type ew_u; [L149] ew_u.value = (x) [L150] EXPR ew_u.parts.msw [L150] (hx) = ew_u.parts.msw [L151] EXPR ew_u.parts.lsw [L151] (lx) = ew_u.parts.lsw [L153] ix = hx & 0x7fffffff [L155] ieee_double_shape_type ew_u; [L156] ew_u.value = (y) [L157] EXPR ew_u.parts.msw [L157] (hy) = ew_u.parts.msw [L158] EXPR ew_u.parts.lsw [L158] (ly) = ew_u.parts.lsw [L160] iy = hy & 0x7fffffff [L161-L162] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L163] return x + y; [L281] RET, EXPR __ieee754_atan2(y, x) [L281] double res = __ieee754_atan2(y, x); [L284] COND TRUE res != pi [L285] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 120 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 304 SDtfs, 24 SDslu, 416 SDs, 0 SdLazy, 322 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 5836 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...