/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/double_req_bl_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:47:22,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:47:22,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:47:22,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:47:22,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:47:22,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:47:22,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:47:22,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:47:22,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:47:22,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:47:22,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:47:22,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:47:22,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:47:22,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:47:22,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:47:22,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:47:22,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:47:22,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:47:22,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:47:22,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:47:22,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:47:22,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:47:22,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:47:22,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:47:22,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:47:22,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:47:22,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:47:22,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:47:22,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:47:22,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:47:22,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:47:22,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:47:22,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:47:22,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:47:22,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:47:22,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:47:22,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:47:22,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:47:22,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:47:22,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:47:22,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:47:22,793 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 04:47:22,816 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:47:22,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:47:22,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:47:22,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:47:22,821 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:47:22,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:47:22,822 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:47:22,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:47:22,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:47:22,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:47:22,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:47:22,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:47:22,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:47:22,823 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:47:22,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:47:22,823 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:47:22,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:47:22,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:47:22,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:47:22,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:47:22,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:47:22,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:47:22,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:47:22,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:47:22,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:47:22,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:47:22,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:47:22,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:47:22,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:47:22,827 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 04:47:23,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:47:23,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:47:23,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:47:23,120 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:47:23,121 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:47:23,121 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-10-14 04:47:23,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/629867774/f718b6d2355d43b0aff6ffa3db2bfc6f/FLAGdd45cf17b [2020-10-14 04:47:23,624 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:47:23,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-10-14 04:47:23,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/629867774/f718b6d2355d43b0aff6ffa3db2bfc6f/FLAGdd45cf17b [2020-10-14 04:47:24,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/629867774/f718b6d2355d43b0aff6ffa3db2bfc6f [2020-10-14 04:47:24,026 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:47:24,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:47:24,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:47:24,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:47:24,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:47:24,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:24" (1/1) ... [2020-10-14 04:47:24,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d85ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:24, skipping insertion in model container [2020-10-14 04:47:24,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:24" (1/1) ... [2020-10-14 04:47:24,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:47:24,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:47:24,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:47:24,311 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:47:24,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:47:24,448 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:47:24,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:24 WrapperNode [2020-10-14 04:47:24,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:47:24,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:47:24,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:47:24,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:47:24,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:24" (1/1) ... [2020-10-14 04:47:24,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:24" (1/1) ... [2020-10-14 04:47:24,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:24" (1/1) ... [2020-10-14 04:47:24,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:24" (1/1) ... [2020-10-14 04:47:24,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:24" (1/1) ... [2020-10-14 04:47:24,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:24" (1/1) ... [2020-10-14 04:47:24,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:24" (1/1) ... [2020-10-14 04:47:24,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:47:24,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:47:24,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:47:24,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:47:24,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:24" (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 04:47:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:47:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:47:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-10-14 04:47:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-10-14 04:47:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-14 04:47:24,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:47:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:47:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-14 04:47:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-10-14 04:47:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:47:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 04:47:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:47:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:47:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-10-14 04:47:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-14 04:47:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:47:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:47:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:47:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 04:47:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:47:24,862 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:47:24,862 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-14 04:47:24,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:24 BoogieIcfgContainer [2020-10-14 04:47:24,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:47:24,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:47:24,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:47:24,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:47:24,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:47:24" (1/3) ... [2020-10-14 04:47:24,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235407e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:24, skipping insertion in model container [2020-10-14 04:47:24,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:24" (2/3) ... [2020-10-14 04:47:24,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235407e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:24, skipping insertion in model container [2020-10-14 04:47:24,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:24" (3/3) ... [2020-10-14 04:47:24,876 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-10-14 04:47:24,890 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:47:24,897 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:47:24,910 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:47:24,936 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:47:24,937 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:47:24,937 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:47:24,937 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:47:24,937 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:47:24,937 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:47:24,937 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:47:24,938 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:47:24,967 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-14 04:47:24,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 04:47:24,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:24,974 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 04:47:24,975 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:24,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:24,980 INFO L82 PathProgramCache]: Analyzing trace with hash -592398611, now seen corresponding path program 1 times [2020-10-14 04:47:24,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:24,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039372255] [2020-10-14 04:47:24,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:25,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:25,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:25,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 04:47:25,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:47:25,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-14 04:47:25,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:25,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:25,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 04:47:25,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:25,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:47:25,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:47:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:25,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:25,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:25,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:47:25,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:25,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:47:25,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:25,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:25,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:25,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:47:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:25,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:25,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:25,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:25,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 04:47:25,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:47:25,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 04:47:25,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:25,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:25,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:25,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 04:47:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:25,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:47:25,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:47:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:25,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:25,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:25,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 04:47:25,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:25,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:47:25,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:25,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 04:47:25,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:25,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:25,695 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 04:47:25,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039372255] [2020-10-14 04:47:25,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:47:25,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:47:25,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774165315] [2020-10-14 04:47:25,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:47:25,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:47:25,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:47:25,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:47:25,724 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-14 04:47:25,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:47:25,927 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-10-14 04:47:25,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:47:25,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-14 04:47:25,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:47:25,940 INFO L225 Difference]: With dead ends: 79 [2020-10-14 04:47:25,940 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 04:47:25,944 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 04:47:25,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 04:47:26,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-14 04:47:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 04:47:26,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-10-14 04:47:26,009 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-10-14 04:47:26,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:47:26,009 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-10-14 04:47:26,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:47:26,010 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-10-14 04:47:26,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 04:47:26,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:26,012 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 04:47:26,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:47:26,013 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:26,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:26,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1646954013, now seen corresponding path program 1 times [2020-10-14 04:47:26,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:26,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28455932] [2020-10-14 04:47:26,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:26,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:26,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:26,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 04:47:26,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:26,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 04:47:26,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:26,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:47:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 04:47:26,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:47:26,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:47:26,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:47:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:26,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:26,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:26,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:47:26,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:26,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:47:26,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:26,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:26,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:47:26,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:47:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:26,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:26,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:26,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 04:47:26,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:26,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 04:47:26,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:26,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:47:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 04:47:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:47:26,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:26,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:47:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:26,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:26,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:26,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 04:47:26,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:26,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 04:47:26,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:26,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:47:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 04:47:26,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:26,348 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 04:47:26,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28455932] [2020-10-14 04:47:26,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:47:26,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:47:26,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941249696] [2020-10-14 04:47:26,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:47:26,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:47:26,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:47:26,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:47:26,352 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-10-14 04:47:26,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:47:26,588 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-10-14 04:47:26,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:47:26,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-14 04:47:26,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:47:26,592 INFO L225 Difference]: With dead ends: 59 [2020-10-14 04:47:26,593 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 04:47:26,594 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 04:47:26,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 04:47:26,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-14 04:47:26,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 04:47:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-14 04:47:26,607 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-10-14 04:47:26,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:47:26,607 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-14 04:47:26,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:47:26,607 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-14 04:47:26,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 04:47:26,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:26,609 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 04:47:26,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:47:26,610 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:26,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:26,610 INFO L82 PathProgramCache]: Analyzing trace with hash 402536752, now seen corresponding path program 1 times [2020-10-14 04:47:26,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:26,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646935565] [2020-10-14 04:47:26,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:26,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:26,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:26,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 04:47:26,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:26,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 04:47:26,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:26,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:26,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:47:26,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 04:47:26,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:47:26,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:26,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:47:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:26,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:26,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:26,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:47:26,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:26,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:47:26,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:26,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:26,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:26,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:26,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:26,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:26,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:47:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:26,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:26,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:26,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 04:47:26,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:26,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 04:47:26,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:26,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:47:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 04:47:26,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:47:26,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:26,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:47:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:26,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:26,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:26,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 04:47:26,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:26,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 04:47:26,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:26,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:26,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:47:26,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:26,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:47:26,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:26,853 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 04:47:26,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646935565] [2020-10-14 04:47:26,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:47:26,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:47:26,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003788060] [2020-10-14 04:47:26,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:47:26,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:47:26,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:47:26,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:47:26,856 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-10-14 04:47:27,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:47:27,094 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-14 04:47:27,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:47:27,094 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-14 04:47:27,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:47:27,096 INFO L225 Difference]: With dead ends: 63 [2020-10-14 04:47:27,096 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 04:47:27,097 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 04:47:27,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 04:47:27,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-14 04:47:27,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 04:47:27,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-14 04:47:27,106 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 24 [2020-10-14 04:47:27,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:47:27,107 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-14 04:47:27,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:47:27,107 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-14 04:47:27,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 04:47:27,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:27,108 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 04:47:27,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:47:27,109 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:27,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:27,109 INFO L82 PathProgramCache]: Analyzing trace with hash 914370183, now seen corresponding path program 1 times [2020-10-14 04:47:27,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:27,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096350419] [2020-10-14 04:47:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:27,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:27,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:27,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 04:47:27,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:27,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 04:47:27,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:27,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:47:27,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 04:47:27,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:47:27,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:47:27,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:47:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:27,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:27,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:27,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:47:27,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:27,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:47:27,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:27,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:27,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:27,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:47:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:27,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:27,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:27,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 04:47:27,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:27,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 04:47:27,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:27,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:27,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:47:27,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:47:27,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:47:27,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:27,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:47:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:27,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:27,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:27,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 04:47:27,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:27,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 04:47:27,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:27,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:27,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:47:27,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:27,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:47:27,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:27,342 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 04:47:27,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096350419] [2020-10-14 04:47:27,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:47:27,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:47:27,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087754413] [2020-10-14 04:47:27,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:47:27,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:47:27,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:47:27,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:47:27,346 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-10-14 04:47:27,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:47:27,563 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-14 04:47:27,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:47:27,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-14 04:47:27,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:47:27,567 INFO L225 Difference]: With dead ends: 63 [2020-10-14 04:47:27,567 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 04:47:27,570 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 04:47:27,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 04:47:27,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-14 04:47:27,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 04:47:27,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-14 04:47:27,586 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 25 [2020-10-14 04:47:27,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:47:27,586 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-14 04:47:27,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:47:27,587 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-14 04:47:27,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 04:47:27,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:27,588 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 04:47:27,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:47:27,590 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:27,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:27,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1003466516, now seen corresponding path program 1 times [2020-10-14 04:47:27,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:27,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126348303] [2020-10-14 04:47:27,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:27,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:27,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:27,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:47:27,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:27,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 04:47:27,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:27,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:47:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 04:47:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:47:27,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:27,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:47:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:27,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:27,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:27,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:47:27,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:27,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:47:27,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:27,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:47:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:47:27,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:27,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 04:47:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:27,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:27,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:27,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 04:47:27,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:27,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 04:47:27,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:27,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:47:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 04:47:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:47:27,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:27,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 04:47:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:47:27,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:47:27,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:47:27,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 04:47:27,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:47:27,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 04:47:27,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:47:27,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:47:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:47:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:47:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:47:27,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:47:27,853 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 04:47:27,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126348303] [2020-10-14 04:47:27,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:47:27,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:47:27,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470066097] [2020-10-14 04:47:27,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:47:27,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:47:27,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:47:27,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:47:27,856 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-10-14 04:47:28,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:47:28,073 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-14 04:47:28,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:47:28,074 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-14 04:47:28,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:47:28,075 INFO L225 Difference]: With dead ends: 63 [2020-10-14 04:47:28,075 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 04:47:28,076 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 04:47:28,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 04:47:28,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-14 04:47:28,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 04:47:28,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-14 04:47:28,091 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-10-14 04:47:28,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:47:28,093 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-14 04:47:28,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:47:28,094 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-14 04:47:28,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 04:47:28,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:47:28,098 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 04:47:28,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:47:28,099 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:47:28,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:47:28,100 INFO L82 PathProgramCache]: Analyzing trace with hash -793484843, now seen corresponding path program 1 times [2020-10-14 04:47:28,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:47:28,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133536582] [2020-10-14 04:47:28,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:47:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 04:47:28,135 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 04:47:28,135 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 04:47:28,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:47:28,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:47:28 BoogieIcfgContainer [2020-10-14 04:47:28,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:47:28,177 INFO L168 Benchmark]: Toolchain (without parser) took 4147.33 ms. Allocated memory was 146.8 MB in the beginning and 243.3 MB in the end (delta: 96.5 MB). Free memory was 102.7 MB in the beginning and 156.4 MB in the end (delta: -53.8 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:28,179 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 04:47:28,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.86 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 102.7 MB in the beginning and 181.5 MB in the end (delta: -78.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:28,185 INFO L168 Benchmark]: Boogie Preprocessor took 40.60 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 179.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:28,186 INFO L168 Benchmark]: RCFGBuilder took 376.74 ms. Allocated memory is still 202.9 MB. Free memory was 179.3 MB in the beginning and 158.0 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:28,187 INFO L168 Benchmark]: TraceAbstraction took 3304.94 ms. Allocated memory was 202.9 MB in the beginning and 243.3 MB in the end (delta: 40.4 MB). Free memory was 158.0 MB in the beginning and 156.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. [2020-10-14 04:47:28,193 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 419.86 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 102.7 MB in the beginning and 181.5 MB in the end (delta: -78.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.60 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 179.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 376.74 ms. Allocated memory is still 202.9 MB. Free memory was 179.3 MB in the beginning and 158.0 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3304.94 ms. Allocated memory was 202.9 MB in the beginning and 243.3 MB in the end (delta: 40.4 MB). Free memory was 158.0 MB in the beginning and 156.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L81] CALL, EXPR fmax_double(x, y) [L52] CALL, EXPR __fpclassify_double(x) [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; [L52] RET, EXPR __fpclassify_double(x) [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; [L81] RET, EXPR fmax_double(x, y) [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.2s, 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, 1.6s 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...