/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/float_req_bl_1232b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:48:42,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:48:42,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:48:42,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:48:42,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:48:42,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:48:42,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:48:42,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:48:42,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:48:42,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:48:42,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:48:42,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:48:42,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:48:42,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:48:42,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:48:42,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:48:42,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:48:42,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:48:42,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:48:42,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:48:42,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:48:42,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:48:42,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:48:42,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:48:42,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:48:42,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:48:42,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:48:42,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:48:42,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:48:42,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:48:42,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:48:42,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:48:42,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:48:42,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:48:42,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:48:42,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:48:42,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:48:42,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:48:42,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:48:42,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:48:42,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:48:42,400 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 [2020-10-14 04:48:42,426 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:48:42,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:48:42,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:48:42,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:48:42,428 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:48:42,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:48:42,428 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:48:42,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:48:42,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:48:42,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:48:42,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:48:42,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:48:42,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:48:42,430 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:48:42,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:48:42,430 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:48:42,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:48:42,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:48:42,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:48:42,431 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:48:42,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:48:42,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:48:42,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:48:42,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:48:42,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:48:42,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:48:42,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:48:42,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:48:42,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:48:42,433 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:48:42,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:48:42,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:48:42,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:48:42,830 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:48:42,831 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:48:42,832 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-10-14 04:48:42,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd6164901/4557cd5805ab459aa0728df6d46e87b6/FLAGbdcde5098 [2020-10-14 04:48:43,423 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:48:43,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-10-14 04:48:43,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd6164901/4557cd5805ab459aa0728df6d46e87b6/FLAGbdcde5098 [2020-10-14 04:48:43,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd6164901/4557cd5805ab459aa0728df6d46e87b6 [2020-10-14 04:48:43,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:48:43,766 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:48:43,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:48:43,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:48:43,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:48:43,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:48:43" (1/1) ... [2020-10-14 04:48:43,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@238a6ce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:43, skipping insertion in model container [2020-10-14 04:48:43,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:48:43" (1/1) ... [2020-10-14 04:48:43,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:48:43,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:48:43,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:48:43,990 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:48:44,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:48:44,142 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:48:44,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:44 WrapperNode [2020-10-14 04:48:44,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:48:44,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:48:44,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:48:44,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:48:44,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:44" (1/1) ... [2020-10-14 04:48:44,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:44" (1/1) ... [2020-10-14 04:48:44,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:44" (1/1) ... [2020-10-14 04:48:44,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:44" (1/1) ... [2020-10-14 04:48:44,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:44" (1/1) ... [2020-10-14 04:48:44,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:44" (1/1) ... [2020-10-14 04:48:44,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:44" (1/1) ... [2020-10-14 04:48:44,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:48:44,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:48:44,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:48:44,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:48:44,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:44" (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 [2020-10-14 04:48:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:48:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:48:44,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-10-14 04:48:44,260 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-10-14 04:48:44,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-14 04:48:44,260 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:48:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:48:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 04:48:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-10-14 04:48:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:48:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:48:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:48:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:48:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-10-14 04:48:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-14 04:48:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:48:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:48:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:48:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:48:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:48:44,748 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:48:44,748 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-14 04:48:44,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:48:44 BoogieIcfgContainer [2020-10-14 04:48:44,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:48:44,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:48:44,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:48:44,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:48:44,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:48:43" (1/3) ... [2020-10-14 04:48:44,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5108787d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:48:44, skipping insertion in model container [2020-10-14 04:48:44,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:48:44" (2/3) ... [2020-10-14 04:48:44,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5108787d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:48:44, skipping insertion in model container [2020-10-14 04:48:44,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:48:44" (3/3) ... [2020-10-14 04:48:44,764 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2020-10-14 04:48:44,775 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:48:44,783 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:48:44,796 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:48:44,819 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:48:44,819 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:48:44,820 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:48:44,820 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:48:44,820 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:48:44,820 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:48:44,821 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:48:44,821 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:48:44,840 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-14 04:48:44,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 04:48:44,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:44,848 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] [2020-10-14 04:48:44,848 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:44,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:44,854 INFO L82 PathProgramCache]: Analyzing trace with hash -411440866, now seen corresponding path program 1 times [2020-10-14 04:48:44,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:44,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868649414] [2020-10-14 04:48:44,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:45,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:45,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:45,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:45,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 04:48:45,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:48:45,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-14 04:48:45,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:45,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 04:48:45,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:45,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 04:48:45,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:48:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:45,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:45,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:45,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:45,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:45,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:48:45,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:45,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:45,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:45,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:45,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:45,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:45,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:48:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:45,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:45,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:45,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:45,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:48:45,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:48:45,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 04:48:45,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:45,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:45,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:45,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 04:48:45,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:45,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:48:45,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:48:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:45,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:45,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:45,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:48:45,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:45,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:48:45,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:45,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:45,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:45,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 04:48:45,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:45,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:48:45,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868649414] [2020-10-14 04:48:45,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:48:45,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:48:45,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599324359] [2020-10-14 04:48:45,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:48:45,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:48:45,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:48:45,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:48:45,533 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-14 04:48:45,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:48:45,761 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-10-14 04:48:45,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:48:45,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-14 04:48:45,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:48:45,775 INFO L225 Difference]: With dead ends: 79 [2020-10-14 04:48:45,775 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 04:48:45,779 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 [2020-10-14 04:48:45,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 04:48:45,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-14 04:48:45,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 04:48:45,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-10-14 04:48:45,843 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-10-14 04:48:45,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:48:45,844 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-10-14 04:48:45,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:48:45,844 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-10-14 04:48:45,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 04:48:45,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:45,847 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] [2020-10-14 04:48:45,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:48:45,847 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:45,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:45,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1480673795, now seen corresponding path program 1 times [2020-10-14 04:48:45,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:45,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261178625] [2020-10-14 04:48:45,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:45,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:45,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:45,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 04:48:45,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 04:48:45,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:45,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 04:48:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:48:45,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:45,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:48:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:45,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:45,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:45,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:45,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:45,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:48:45,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:45,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:45,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:48:46,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:48:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:46,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:46,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:46,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 04:48:46,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:46,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 04:48:46,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:46,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:46,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:46,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 04:48:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:48:46,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:46,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:48:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:46,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:46,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:46,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:48:46,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:46,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 04:48:46,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:46,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:46,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:46,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:46,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:48:46,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:46,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:48:46,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261178625] [2020-10-14 04:48:46,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:48:46,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:48:46,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807037114] [2020-10-14 04:48:46,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:48:46,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:48:46,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:48:46,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:48:46,188 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-10-14 04:48:46,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:48:46,425 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-10-14 04:48:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:48:46,426 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-14 04:48:46,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:48:46,429 INFO L225 Difference]: With dead ends: 59 [2020-10-14 04:48:46,430 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 04:48:46,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:48:46,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 04:48:46,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-14 04:48:46,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 04:48:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-14 04:48:46,444 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-10-14 04:48:46,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:48:46,445 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-14 04:48:46,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:48:46,445 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-14 04:48:46,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 04:48:46,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:46,447 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] [2020-10-14 04:48:46,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:48:46,447 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:46,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:46,448 INFO L82 PathProgramCache]: Analyzing trace with hash 387656001, now seen corresponding path program 1 times [2020-10-14 04:48:46,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:46,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169247047] [2020-10-14 04:48:46,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:46,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:46,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:46,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 04:48:46,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:46,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 04:48:46,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:46,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:46,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 04:48:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:48:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:46,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:48:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:46,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:46,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:46,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:46,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:46,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:48:46,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:46,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:46,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:46,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:46,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:46,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:46,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:48:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:46,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:46,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:46,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 04:48:46,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:46,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 04:48:46,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:46,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:46,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:46,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 04:48:46,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:48:46,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:46,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:48:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:46,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:46,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:46,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:48:46,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:46,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 04:48:46,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:46,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:48:46,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:48:46,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169247047] [2020-10-14 04:48:46,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:48:46,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:48:46,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872603787] [2020-10-14 04:48:46,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:48:46,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:48:46,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:48:46,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:48:46,685 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-10-14 04:48:46,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:48:46,920 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-14 04:48:46,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:48:46,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-14 04:48:46,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:48:46,923 INFO L225 Difference]: With dead ends: 63 [2020-10-14 04:48:46,923 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 04:48:46,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:48:46,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 04:48:46,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-14 04:48:46,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 04:48:46,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-14 04:48:46,934 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 24 [2020-10-14 04:48:46,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:48:46,934 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-14 04:48:46,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:48:46,935 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-14 04:48:46,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 04:48:46,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:46,936 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] [2020-10-14 04:48:46,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:48:46,937 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:46,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:46,937 INFO L82 PathProgramCache]: Analyzing trace with hash -2028995385, now seen corresponding path program 1 times [2020-10-14 04:48:46,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:46,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825640056] [2020-10-14 04:48:46,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:46,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:47,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:47,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 04:48:47,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:47,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 04:48:47,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:47,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 04:48:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:48:47,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:47,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:48:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:47,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:47,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:47,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:47,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:47,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:48:47,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:47,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:47,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:47,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:48:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:47,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:47,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:47,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 04:48:47,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:47,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 04:48:47,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:47,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:47,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:48:47,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:48:47,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:47,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:48:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:47,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:47,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:47,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 04:48:47,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:47,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 04:48:47,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:47,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:47,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:48:47,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:48:47,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825640056] [2020-10-14 04:48:47,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:48:47,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:48:47,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575919941] [2020-10-14 04:48:47,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:48:47,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:48:47,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:48:47,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:48:47,151 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-10-14 04:48:47,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:48:47,345 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-14 04:48:47,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:48:47,346 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-14 04:48:47,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:48:47,347 INFO L225 Difference]: With dead ends: 63 [2020-10-14 04:48:47,348 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 04:48:47,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:48:47,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 04:48:47,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-14 04:48:47,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 04:48:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-14 04:48:47,356 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 25 [2020-10-14 04:48:47,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:48:47,357 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-14 04:48:47,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:48:47,357 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-14 04:48:47,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 04:48:47,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:47,358 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] [2020-10-14 04:48:47,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:48:47,359 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:47,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:47,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1766352133, now seen corresponding path program 1 times [2020-10-14 04:48:47,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:47,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057413740] [2020-10-14 04:48:47,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:47,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:47,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:47,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:48:47,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:47,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 04:48:47,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:47,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:47,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:47,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 04:48:47,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:48:47,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:47,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:48:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:47,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:47,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:47,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:48:47,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:47,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:48:47,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:47,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:47,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:48:47,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:47,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:48:47,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:47,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:48:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:47,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:47,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:47,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 04:48:47,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:47,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 04:48:47,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:47,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:47,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:47,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 04:48:47,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:48:47,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-10-14 04:48:47,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:48:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:48:47,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:48:47,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:48:47,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 04:48:47,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:48:47,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 04:48:47,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:48:47,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:48:47,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:48:47,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:48:47,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:48:47,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:48:47,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:48:47,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057413740] [2020-10-14 04:48:47,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:48:47,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:48:47,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62563497] [2020-10-14 04:48:47,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:48:47,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:48:47,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:48:47,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:48:47,575 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-10-14 04:48:47,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:48:47,798 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-14 04:48:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:48:47,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-14 04:48:47,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:48:47,801 INFO L225 Difference]: With dead ends: 63 [2020-10-14 04:48:47,801 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 04:48:47,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:48:47,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 04:48:47,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-14 04:48:47,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 04:48:47,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-14 04:48:47,809 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-10-14 04:48:47,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:48:47,810 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-14 04:48:47,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:48:47,810 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-14 04:48:47,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 04:48:47,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:48:47,811 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] [2020-10-14 04:48:47,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:48:47,812 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:48:47,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:48:47,812 INFO L82 PathProgramCache]: Analyzing trace with hash -30599226, now seen corresponding path program 1 times [2020-10-14 04:48:47,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:48:47,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412006440] [2020-10-14 04:48:47,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:48:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:48:47,825 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:48:47,825 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:48:47,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:48:47,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:48:47 BoogieIcfgContainer [2020-10-14 04:48:47,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:48:47,856 INFO L168 Benchmark]: Toolchain (without parser) took 4088.98 ms. Allocated memory was 148.4 MB in the beginning and 243.8 MB in the end (delta: 95.4 MB). Free memory was 105.0 MB in the beginning and 168.7 MB in the end (delta: -63.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:47,857 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.5 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 04:48:47,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.23 ms. Allocated memory was 148.4 MB in the beginning and 201.9 MB in the end (delta: 53.5 MB). Free memory was 104.6 MB in the beginning and 180.5 MB in the end (delta: -75.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:47,859 INFO L168 Benchmark]: Boogie Preprocessor took 48.97 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 178.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:47,860 INFO L168 Benchmark]: RCFGBuilder took 554.52 ms. Allocated memory is still 201.9 MB. Free memory was 177.3 MB in the beginning and 158.3 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:47,861 INFO L168 Benchmark]: TraceAbstraction took 3098.96 ms. Allocated memory was 201.9 MB in the beginning and 243.8 MB in the end (delta: 41.9 MB). Free memory was 157.4 MB in the beginning and 168.7 MB in the end (delta: -11.3 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. [2020-10-14 04:48:47,865 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.5 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 379.23 ms. Allocated memory was 148.4 MB in the beginning and 201.9 MB in the end (delta: 53.5 MB). Free memory was 104.6 MB in the beginning and 180.5 MB in the end (delta: -75.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.97 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 178.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 554.52 ms. Allocated memory is still 201.9 MB. Free memory was 177.3 MB in the beginning and 158.3 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3098.96 ms. Allocated memory was 201.9 MB in the beginning and 243.8 MB in the end (delta: 41.9 MB). Free memory was 157.4 MB in the beginning and 168.7 MB in the end (delta: -11.3 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; [L66] CALL, EXPR fmin_float(x, y) [L36] CALL, EXPR __fpclassify_float(x) [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; [L36] RET, EXPR __fpclassify_float(x) [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; [L66] RET, EXPR fmin_float(x, y) [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 210 SDtfs, 189 SDslu, 81 SDs, 0 SdLazy, 595 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 7202 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...