/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:59:44,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:59:44,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:59:44,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:59:44,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:59:44,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:59:44,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:59:44,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:59:44,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:59:44,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:59:44,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:59:44,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:59:44,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:59:44,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:59:44,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:59:44,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:59:45,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:59:45,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:59:45,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:59:45,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:59:45,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:59:45,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:59:45,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:59:45,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:59:45,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:59:45,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:59:45,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:59:45,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:59:45,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:59:45,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:59:45,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:59:45,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:59:45,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:59:45,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:59:45,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:59:45,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:59:45,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:59:45,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:59:45,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:59:45,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:59:45,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:59:45,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 01:59:45,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:59:45,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:59:45,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:59:45,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:59:45,108 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:59:45,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:59:45,109 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:59:45,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:59:45,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:59:45,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:59:45,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:59:45,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:59:45,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:59:45,111 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:59:45,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:59:45,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:59:45,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:59:45,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:59:45,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:59:45,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:59:45,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:59:45,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:59:45,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:59:45,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:59:45,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:59:45,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:59:45,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:59:45,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:59:45,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:59:45,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 01:59:45,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:59:45,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:59:45,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:59:45,626 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:59:45,626 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:59:45,628 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-09-25 01:59:45,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/370c37002/e5e2e68595f2452583d4badc38b214de/FLAG76438a8f8 [2020-09-25 01:59:46,295 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:59:46,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-09-25 01:59:46,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/370c37002/e5e2e68595f2452583d4badc38b214de/FLAG76438a8f8 [2020-09-25 01:59:46,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/370c37002/e5e2e68595f2452583d4badc38b214de [2020-09-25 01:59:46,620 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:59:46,627 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:59:46,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:59:46,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:59:46,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:59:46,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:59:46" (1/1) ... [2020-09-25 01:59:46,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78523b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:46, skipping insertion in model container [2020-09-25 01:59:46,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:59:46" (1/1) ... [2020-09-25 01:59:46,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:59:46,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:59:46,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:59:46,938 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:59:46,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:59:47,096 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:59:47,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:47 WrapperNode [2020-09-25 01:59:47,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:59:47,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:59:47,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:59:47,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:59:47,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:47" (1/1) ... [2020-09-25 01:59:47,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:47" (1/1) ... [2020-09-25 01:59:47,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:47" (1/1) ... [2020-09-25 01:59:47,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:47" (1/1) ... [2020-09-25 01:59:47,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:47" (1/1) ... [2020-09-25 01:59:47,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:47" (1/1) ... [2020-09-25 01:59:47,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:47" (1/1) ... [2020-09-25 01:59:47,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:59:47,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:59:47,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:59:47,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:59:47,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:59:47,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:59:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:59:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-25 01:59:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-09-25 01:59:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-25 01:59:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:59:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:59:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 01:59:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-25 01:59:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:59:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 01:59:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:59:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:59:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-09-25 01:59:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-25 01:59:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:59:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:59:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:59:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:59:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 01:59:47,711 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:59:47,711 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 01:59:47,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:59:47 BoogieIcfgContainer [2020-09-25 01:59:47,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:59:47,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:59:47,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:59:47,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:59:47,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:59:46" (1/3) ... [2020-09-25 01:59:47,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6057ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:59:47, skipping insertion in model container [2020-09-25 01:59:47,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:47" (2/3) ... [2020-09-25 01:59:47,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6057ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:59:47, skipping insertion in model container [2020-09-25 01:59:47,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:59:47" (3/3) ... [2020-09-25 01:59:47,728 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-09-25 01:59:47,739 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:59:47,749 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:59:47,770 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:59:47,801 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:59:47,801 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:59:47,801 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:59:47,802 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:59:47,802 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:59:47,802 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:59:47,802 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:59:47,802 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:59:47,827 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2020-09-25 01:59:47,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 01:59:47,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:47,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:47,838 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:47,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:47,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1930633076, now seen corresponding path program 1 times [2020-09-25 01:59:47,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:47,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431214865] [2020-09-25 01:59:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 01:59:48,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:59:48,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-09-25 01:59:48,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:48,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 01:59:48,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:48,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:59:48,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:48,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 01:59:48,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:48,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:48,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:48,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:48,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 01:59:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:59:48,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:59:48,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 01:59:48,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:48,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 01:59:48,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:48,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:48,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:59:48,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:59:48,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 01:59:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:48,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:48,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:48,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431214865] [2020-09-25 01:59:48,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:48,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:59:48,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705605148] [2020-09-25 01:59:48,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:59:48,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:48,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:59:48,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:59:48,699 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 4 states. [2020-09-25 01:59:48,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:48,997 INFO L93 Difference]: Finished difference Result 176 states and 204 transitions. [2020-09-25 01:59:48,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:59:48,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-09-25 01:59:49,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:49,015 INFO L225 Difference]: With dead ends: 176 [2020-09-25 01:59:49,015 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 01:59:49,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:59:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 01:59:49,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-25 01:59:49,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 01:59:49,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-09-25 01:59:49,091 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 35 [2020-09-25 01:59:49,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:49,092 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-09-25 01:59:49,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:59:49,092 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-09-25 01:59:49,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 01:59:49,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:49,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:49,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:59:49,097 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:49,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:49,098 INFO L82 PathProgramCache]: Analyzing trace with hash -330335414, now seen corresponding path program 1 times [2020-09-25 01:59:49,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:49,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334067166] [2020-09-25 01:59:49,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 01:59:49,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 01:59:49,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:49,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 01:59:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:49,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:49,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:49,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 01:59:49,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:49,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:49,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:49,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 01:59:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 01:59:49,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 01:59:49,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:49,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 01:59:49,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:49,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:49,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 01:59:49,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 01:59:49,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:49,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:49,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 01:59:49,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:49,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334067166] [2020-09-25 01:59:49,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:49,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:59:49,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835071082] [2020-09-25 01:59:49,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:59:49,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:49,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:59:49,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:59:49,708 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 6 states. [2020-09-25 01:59:49,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:49,961 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-09-25 01:59:49,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:59:49,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-25 01:59:49,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:49,967 INFO L225 Difference]: With dead ends: 123 [2020-09-25 01:59:49,967 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 01:59:49,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:59:49,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 01:59:49,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-09-25 01:59:49,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 01:59:49,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-25 01:59:49,987 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 49 [2020-09-25 01:59:49,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:49,987 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-25 01:59:49,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:59:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-25 01:59:49,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 01:59:49,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:49,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:49,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:59:49,991 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:49,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:49,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1062376204, now seen corresponding path program 1 times [2020-09-25 01:59:49,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:49,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679226891] [2020-09-25 01:59:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:50,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:50,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:50,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 01:59:50,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:50,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 01:59:50,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:50,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 01:59:50,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:50,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:50,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:50,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:50,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:50,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:50,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:50,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:59:50,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:50,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:50,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:50,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 01:59:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:50,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:50,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:50,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 01:59:50,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:50,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 01:59:50,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:50,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 01:59:50,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:50,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:50,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:50,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:50,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:50,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 01:59:50,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:50,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 01:59:50,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:50,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:50,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:50,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 01:59:50,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:50,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679226891] [2020-09-25 01:59:50,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:50,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:59:50,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275354539] [2020-09-25 01:59:50,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:59:50,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:50,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:59:50,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:59:50,490 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-25 01:59:50,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:50,700 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-25 01:59:50,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:59:50,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-09-25 01:59:50,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:50,703 INFO L225 Difference]: With dead ends: 127 [2020-09-25 01:59:50,703 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 01:59:50,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:59:50,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 01:59:50,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-25 01:59:50,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 01:59:50,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-25 01:59:50,716 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 50 [2020-09-25 01:59:50,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:50,717 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-25 01:59:50,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:59:50,717 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-25 01:59:50,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 01:59:50,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:50,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:50,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:59:50,719 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:50,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:50,720 INFO L82 PathProgramCache]: Analyzing trace with hash -536622705, now seen corresponding path program 1 times [2020-09-25 01:59:50,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:50,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83007207] [2020-09-25 01:59:50,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:50,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:50,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:50,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 01:59:50,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:50,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 01:59:50,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:50,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 01:59:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:50,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:50,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:50,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:50,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:50,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:50,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:50,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:59:50,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:50,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:50,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 01:59:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:50,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:50,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:50,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 01:59:50,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:50,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 01:59:50,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 01:59:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:50,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:51,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:51,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:51,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:51,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 01:59:51,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:51,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 01:59:51,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:51,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 01:59:51,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:51,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:51,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83007207] [2020-09-25 01:59:51,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:51,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:59:51,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668106753] [2020-09-25 01:59:51,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:59:51,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:51,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:59:51,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:59:51,131 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-25 01:59:51,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:51,386 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-25 01:59:51,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:59:51,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-25 01:59:51,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:51,389 INFO L225 Difference]: With dead ends: 127 [2020-09-25 01:59:51,389 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 01:59:51,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:59:51,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 01:59:51,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-25 01:59:51,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 01:59:51,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-25 01:59:51,401 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 51 [2020-09-25 01:59:51,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:51,402 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-25 01:59:51,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:59:51,402 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-25 01:59:51,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 01:59:51,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:51,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:51,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:59:51,408 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:51,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:51,409 INFO L82 PathProgramCache]: Analyzing trace with hash -389367439, now seen corresponding path program 1 times [2020-09-25 01:59:51,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:51,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293647274] [2020-09-25 01:59:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:51,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:51,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:51,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 01:59:51,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:51,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 01:59:51,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 01:59:51,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:51,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:59:51,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:51,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:51,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:51,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:51,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:51,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:59:51,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:51,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:51,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 01:59:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:51,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:51,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 01:59:51,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:51,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 01:59:51,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:51,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 01:59:51,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:51,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:51,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:51,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:51,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:51,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 01:59:51,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:51,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 01:59:51,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:51,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:51,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:51,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 01:59:51,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:51,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:51,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293647274] [2020-09-25 01:59:51,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:51,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:59:51,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79374476] [2020-09-25 01:59:51,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:59:51,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:51,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:59:51,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:59:51,880 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-25 01:59:52,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:52,092 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-25 01:59:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:59:52,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-25 01:59:52,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:52,094 INFO L225 Difference]: With dead ends: 127 [2020-09-25 01:59:52,094 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 01:59:52,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:59:52,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 01:59:52,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-25 01:59:52,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 01:59:52,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-25 01:59:52,116 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 52 [2020-09-25 01:59:52,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:52,117 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-25 01:59:52,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:59:52,117 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-25 01:59:52,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 01:59:52,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:52,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:52,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:59:52,121 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:52,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:52,121 INFO L82 PathProgramCache]: Analyzing trace with hash 323107249, now seen corresponding path program 1 times [2020-09-25 01:59:52,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:52,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093136427] [2020-09-25 01:59:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 01:59:52,142 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 01:59:52,142 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 01:59:52,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 01:59:52,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:59:52 BoogieIcfgContainer [2020-09-25 01:59:52,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:59:52,186 INFO L168 Benchmark]: Toolchain (without parser) took 5561.91 ms. Allocated memory was 147.8 MB in the beginning and 271.1 MB in the end (delta: 123.2 MB). Free memory was 102.9 MB in the beginning and 243.3 MB in the end (delta: -140.4 MB). Peak memory consumption was 99.1 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:52,188 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 01:59:52,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 469.84 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.3 MB in the beginning and 183.4 MB in the end (delta: -81.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:52,195 INFO L168 Benchmark]: Boogie Preprocessor took 58.62 ms. Allocated memory is still 204.5 MB. Free memory was 183.4 MB in the beginning and 181.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:52,196 INFO L168 Benchmark]: RCFGBuilder took 560.89 ms. Allocated memory is still 204.5 MB. Free memory was 181.1 MB in the beginning and 156.3 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:52,197 INFO L168 Benchmark]: TraceAbstraction took 4462.54 ms. Allocated memory was 204.5 MB in the beginning and 271.1 MB in the end (delta: 66.6 MB). Free memory was 155.7 MB in the beginning and 243.3 MB in the end (delta: -87.6 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:52,211 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 469.84 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.3 MB in the beginning and 183.4 MB in the end (delta: -81.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.62 ms. Allocated memory is still 204.5 MB. Free memory was 183.4 MB in the beginning and 181.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 560.89 ms. Allocated memory is still 204.5 MB. Free memory was 181.1 MB in the beginning and 156.3 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4462.54 ms. Allocated memory was 204.5 MB in the beginning and 271.1 MB in the end (delta: 66.6 MB). Free memory was 155.7 MB in the beginning and 243.3 MB in the end (delta: -87.6 MB). Peak memory consumption was 95.3 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, 95 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 471 SDtfs, 99 SDslu, 970 SDs, 0 SdLazy, 655 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 289 NumberOfCodeBlocks, 289 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 232 ConstructedInterpolants, 0 QuantifiedInterpolants, 20602 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...