/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 SingleStatement --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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:30:20,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:30:20,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:30:20,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:30:20,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:30:20,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:30:20,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:30:20,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:30:20,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:30:20,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:30:20,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:30:20,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:30:20,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:30:20,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:30:20,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:30:20,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:30:20,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:30:20,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:30:20,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:30:20,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:30:20,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:30:20,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:30:20,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:30:20,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:30:20,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:30:20,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:30:20,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:30:20,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:30:20,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:30:20,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:30:20,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:30:20,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:30:20,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:30:20,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:30:20,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:30:20,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:30:20,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:30:20,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:30:20,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:30:20,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:30:20,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:30:20,137 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 [2020-09-24 21:30:20,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:30:20,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:30:20,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:30:20,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:30:20,174 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:30:20,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:30:20,175 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:30:20,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:30:20,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:30:20,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:30:20,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:30:20,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:30:20,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:30:20,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:30:20,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:30:20,177 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:30:20,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:30:20,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:30:20,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:30:20,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:30:20,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:30:20,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:30:20,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:30:20,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:30:20,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:30:20,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:30:20,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:30:20,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:30:20,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:30:20,180 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 -> SingleStatement 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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:30:20,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:30:20,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:30:20,670 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:30:20,672 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:30:20,674 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:30:20,675 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2020-09-24 21:30:20,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24e596059/874ebcaef1264d26ac2edc2fe78d5606/FLAG9a3801b8d [2020-09-24 21:30:21,290 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:30:21,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2020-09-24 21:30:21,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24e596059/874ebcaef1264d26ac2edc2fe78d5606/FLAG9a3801b8d [2020-09-24 21:30:21,617 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24e596059/874ebcaef1264d26ac2edc2fe78d5606 [2020-09-24 21:30:21,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:30:21,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:30:21,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:21,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:30:21,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:30:21,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:21" (1/1) ... [2020-09-24 21:30:21,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c489c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:21, skipping insertion in model container [2020-09-24 21:30:21,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:21" (1/1) ... [2020-09-24 21:30:21,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:30:21,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:30:21,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:21,936 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:30:22,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:22,077 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:30:22,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22 WrapperNode [2020-09-24 21:30:22,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:22,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:30:22,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:30:22,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:30:22,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:30:22,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:30:22,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:30:22,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:30:22,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (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 [2020-09-24 21:30:22,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:30:22,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:30:22,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 21:30:22,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-24 21:30:22,213 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-09-24 21:30:22,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-24 21:30:22,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:30:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:30:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 21:30:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 21:30:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-24 21:30:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:30:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 21:30:22,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:30:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:30:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-09-24 21:30:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-24 21:30:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:30:22,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:30:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:30:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 21:30:22,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:30:22,609 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:30:22,609 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 21:30:22,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:22 BoogieIcfgContainer [2020-09-24 21:30:22,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:30:22,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:30:22,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:30:22,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:30:22,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:30:21" (1/3) ... [2020-09-24 21:30:22,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ad7d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:22, skipping insertion in model container [2020-09-24 21:30:22,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (2/3) ... [2020-09-24 21:30:22,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ad7d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:22, skipping insertion in model container [2020-09-24 21:30:22,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:22" (3/3) ... [2020-09-24 21:30:22,625 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c [2020-09-24 21:30:22,652 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:30:22,664 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:30:22,685 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:30:22,716 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:30:22,716 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:30:22,716 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:30:22,716 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:30:22,716 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:30:22,716 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:30:22,717 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:30:22,717 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:30:22,740 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2020-09-24 21:30:22,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 21:30:22,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:22,750 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] [2020-09-24 21:30:22,750 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:22,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:22,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1987914920, now seen corresponding path program 1 times [2020-09-24 21:30:22,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:22,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007858739] [2020-09-24 21:30:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:22,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:23,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:23,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:23,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 21:30:23,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:30:23,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-09-24 21:30:23,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:23,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:23,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 21:30:23,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:23,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:30:23,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:23,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:23,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:23,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:23,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:23,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:30:23,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:23,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:23,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 21:30:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:23,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:23,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:23,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:23,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:30:23,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:30:23,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 21:30:23,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:30:23,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:23,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:23,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:30:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:23,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:23,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:23,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:30:23,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:23,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:30:23,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:23,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:23,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 21:30:23,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:23,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:30:23,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007858739] [2020-09-24 21:30:23,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:23,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:30:23,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613042236] [2020-09-24 21:30:23,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:30:23,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:23,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:30:23,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:30:23,596 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 4 states. [2020-09-24 21:30:23,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:23,896 INFO L93 Difference]: Finished difference Result 176 states and 204 transitions. [2020-09-24 21:30:23,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 21:30:23,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-09-24 21:30:23,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:23,912 INFO L225 Difference]: With dead ends: 176 [2020-09-24 21:30:23,912 INFO L226 Difference]: Without dead ends: 87 [2020-09-24 21:30:23,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:30:23,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-24 21:30:23,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-24 21:30:23,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-24 21:30:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-09-24 21:30:23,981 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 35 [2020-09-24 21:30:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:23,982 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-09-24 21:30:23,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:30:23,982 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-09-24 21:30:23,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 21:30:23,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:23,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:30:23,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:30:23,986 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:23,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:23,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1530124146, now seen corresponding path program 1 times [2020-09-24 21:30:23,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:23,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298091159] [2020-09-24 21:30:23,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:24,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 21:30:24,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:24,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-24 21:30:24,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:24,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 21:30:24,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:24,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:24,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:24,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:24,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:24,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:30:24,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:24,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:24,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:24,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:24,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 21:30:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:24,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 21:30:24,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:24,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 21:30:24,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:24,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 21:30:24,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:24,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:24,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:30:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:24,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 21:30:24,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:24,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 21:30:24,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:24,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 21:30:24,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:30:24,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298091159] [2020-09-24 21:30:24,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:24,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:30:24,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588614284] [2020-09-24 21:30:24,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:30:24,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:24,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:30:24,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:30:24,477 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 6 states. [2020-09-24 21:30:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:24,691 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-09-24 21:30:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:30:24,692 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-24 21:30:24,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:24,696 INFO L225 Difference]: With dead ends: 123 [2020-09-24 21:30:24,696 INFO L226 Difference]: Without dead ends: 92 [2020-09-24 21:30:24,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:30:24,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-24 21:30:24,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-09-24 21:30:24,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 21:30:24,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-24 21:30:24,713 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 49 [2020-09-24 21:30:24,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:24,713 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-24 21:30:24,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:30:24,714 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-24 21:30:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 21:30:24,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:24,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:30:24,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:30:24,716 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:24,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:24,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1188811885, now seen corresponding path program 1 times [2020-09-24 21:30:24,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:24,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394956776] [2020-09-24 21:30:24,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:24,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 21:30:24,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:24,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 21:30:24,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 21:30:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:24,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:24,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:24,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:24,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:24,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:30:24,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:24,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:24,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:24,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:24,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 21:30:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:24,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 21:30:24,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:24,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 21:30:24,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 21:30:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:25,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:25,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:30:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:30:25,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 21:30:25,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:25,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:25,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:30:25,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:30:25,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394956776] [2020-09-24 21:30:25,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:25,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:30:25,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513292993] [2020-09-24 21:30:25,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:30:25,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:25,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:30:25,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:30:25,144 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-24 21:30:25,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:25,359 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-24 21:30:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:30:25,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-09-24 21:30:25,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:25,362 INFO L225 Difference]: With dead ends: 127 [2020-09-24 21:30:25,362 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 21:30:25,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:30:25,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 21:30:25,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-24 21:30:25,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 21:30:25,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-24 21:30:25,374 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 50 [2020-09-24 21:30:25,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:25,374 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-24 21:30:25,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:30:25,375 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-24 21:30:25,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 21:30:25,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:25,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:30:25,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:30:25,377 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:25,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:25,377 INFO L82 PathProgramCache]: Analyzing trace with hash 2048064115, now seen corresponding path program 1 times [2020-09-24 21:30:25,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:25,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644204060] [2020-09-24 21:30:25,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 21:30:25,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 21:30:25,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 21:30:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:25,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:25,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:25,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:30:25,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:25,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:25,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:25,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:25,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 21:30:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 21:30:25,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 21:30:25,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:25,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 21:30:25,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:25,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:25,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:30:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 21:30:25,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 21:30:25,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:25,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 21:30:25,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:30:25,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644204060] [2020-09-24 21:30:25,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:25,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:30:25,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135187651] [2020-09-24 21:30:25,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:30:25,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:25,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:30:25,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:30:25,750 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-24 21:30:25,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:25,953 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-24 21:30:25,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:30:25,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-24 21:30:25,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:25,955 INFO L225 Difference]: With dead ends: 127 [2020-09-24 21:30:25,955 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 21:30:25,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:30:25,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 21:30:25,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-24 21:30:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 21:30:25,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-24 21:30:25,965 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 51 [2020-09-24 21:30:25,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:25,965 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-24 21:30:25,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:30:25,966 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-24 21:30:25,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 21:30:25,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:25,967 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:30:25,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:30:25,968 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:25,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:25,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1091693362, now seen corresponding path program 1 times [2020-09-24 21:30:25,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:25,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219096526] [2020-09-24 21:30:25,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:26,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:26,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:26,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 21:30:26,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:26,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 21:30:26,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:26,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:26,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 21:30:26,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:26,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:26,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:26,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:26,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:26,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:26,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:26,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:30:26,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:26,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:26,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 21:30:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:26,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:26,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:26,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 21:30:26,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:26,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 21:30:26,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 21:30:26,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:26,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:26,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:30:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:26,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:26,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:26,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 21:30:26,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:26,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 21:30:26,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 21:30:26,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:30:26,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219096526] [2020-09-24 21:30:26,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:26,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:30:26,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245468256] [2020-09-24 21:30:26,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:30:26,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:26,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:30:26,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:30:26,346 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-24 21:30:26,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:26,527 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-24 21:30:26,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:30:26,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-24 21:30:26,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:26,529 INFO L225 Difference]: With dead ends: 127 [2020-09-24 21:30:26,529 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 21:30:26,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:30:26,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 21:30:26,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-24 21:30:26,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 21:30:26,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-24 21:30:26,538 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 52 [2020-09-24 21:30:26,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:26,539 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-24 21:30:26,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:30:26,539 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-24 21:30:26,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 21:30:26,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:26,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:30:26,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:30:26,541 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:26,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:26,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1804168050, now seen corresponding path program 1 times [2020-09-24 21:30:26,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:26,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363442771] [2020-09-24 21:30:26,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:30:26,559 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:30:26,560 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:30:26,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:30:26,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:30:26 BoogieIcfgContainer [2020-09-24 21:30:26,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:30:26,590 INFO L168 Benchmark]: Toolchain (without parser) took 4956.90 ms. Allocated memory was 137.9 MB in the beginning and 249.6 MB in the end (delta: 111.7 MB). Free memory was 100.7 MB in the beginning and 134.9 MB in the end (delta: -34.2 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:26,591 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 21:30:26,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.31 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 100.1 MB in the beginning and 178.7 MB in the end (delta: -78.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:26,593 INFO L168 Benchmark]: Boogie Preprocessor took 49.87 ms. Allocated memory is still 200.8 MB. Free memory was 178.7 MB in the beginning and 176.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:26,593 INFO L168 Benchmark]: RCFGBuilder took 486.54 ms. Allocated memory is still 200.8 MB. Free memory was 176.0 MB in the beginning and 150.9 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:26,594 INFO L168 Benchmark]: TraceAbstraction took 3969.76 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 150.2 MB in the beginning and 134.9 MB in the end (delta: 15.2 MB). Peak memory consumption was 64.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:26,598 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 441.31 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 100.1 MB in the beginning and 178.7 MB in the end (delta: -78.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.87 ms. Allocated memory is still 200.8 MB. Free memory was 178.7 MB in the beginning and 176.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 486.54 ms. Allocated memory is still 200.8 MB. Free memory was 176.0 MB in the beginning and 150.9 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3969.76 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 150.2 MB in the beginning and 134.9 MB in the end (delta: 15.2 MB). Peak memory consumption was 64.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 75. Possible FailurePath: [L74] double x = 0.0; [L75] double y = -0.0; [L76] CALL, EXPR fmin_double(x, y) [L46] CALL, EXPR __fpclassify_double(x) [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; [L46] RET, EXPR __fpclassify_double(x) [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; [L76] RET, EXPR fmin_double(x, y) [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 471 SDtfs, 99 SDslu, 970 SDs, 0 SdLazy, 655 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 289 NumberOfCodeBlocks, 289 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 232 ConstructedInterpolants, 0 QuantifiedInterpolants, 20602 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...