/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_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:59:44,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:59:44,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:59:44,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:59:44,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:59:44,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:59:44,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:59:44,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:59:44,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:59:44,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:59:44,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:59:44,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:59:44,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:59:44,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:59:44,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:59:44,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:59:44,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:59:44,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:59:44,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:59:44,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:59:44,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:59:44,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:59:44,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:59:44,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:59:44,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:59:44,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:59:44,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:59:44,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:59:44,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:59:44,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:59:44,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:59:44,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:59:44,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:59:44,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:59:44,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:59:44,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:59:44,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:59:44,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:59:44,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:59:44,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:59:44,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:59:44,502 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 01:59:44,544 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:59:44,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:59:44,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:59:44,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:59:44,548 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:59:44,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:59:44,551 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:59:44,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:59:44,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:59:44,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:59:44,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:59:44,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:59:44,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:59:44,552 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:59:44,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:59:44,553 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:59:44,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:59:44,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:59:44,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:59:44,553 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:59:44,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:59:44,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:59:44,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:59:44,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:59:44,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:59:44,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:59:44,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:59:44,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:59:44,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:59:44,555 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 01:59:45,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:59:45,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:59:45,094 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:59:45,096 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:59:45,096 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:59:45,097 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-09-25 01:59:45,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d202e7b51/ef4f476437354a9b9b02691855f6e155/FLAG879c028e2 [2020-09-25 01:59:45,728 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:59:45,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-09-25 01:59:45,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d202e7b51/ef4f476437354a9b9b02691855f6e155/FLAG879c028e2 [2020-09-25 01:59:46,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d202e7b51/ef4f476437354a9b9b02691855f6e155 [2020-09-25 01:59:46,087 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:59:46,094 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:59:46,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:59:46,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:59:46,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:59:46,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:59:46" (1/1) ... [2020-09-25 01:59:46,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a8d835 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 01:59:46,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:59:46" (1/1) ... [2020-09-25 01:59:46,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:59:46,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:59:46,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:59:46,438 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:59:46,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:59:46,595 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:59:46,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:46 WrapperNode [2020-09-25 01:59:46,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:59:46,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:59:46,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:59:46,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:59:46,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:46" (1/1) ... [2020-09-25 01:59:46,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:46" (1/1) ... [2020-09-25 01:59:46,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:46" (1/1) ... [2020-09-25 01:59:46,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:46" (1/1) ... [2020-09-25 01:59:46,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:46" (1/1) ... [2020-09-25 01:59:46,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:46" (1/1) ... [2020-09-25 01:59:46,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:46" (1/1) ... [2020-09-25 01:59:46,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:59:46,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:59:46,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:59:46,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:59:46,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:46" (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 01:59:46,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:59:46,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:59:46,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-25 01:59:46,727 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-09-25 01:59:46,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-25 01:59:46,728 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:59:46,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:59:46,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 01:59:46,728 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-25 01:59:46,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:59:46,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 01:59:46,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:59:46,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:59:46,729 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-09-25 01:59:46,729 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-25 01:59:46,729 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:59:46,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:59:46,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:59:46,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 01:59:46,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:59:47,196 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:59:47,197 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 01:59:47,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:59:47 BoogieIcfgContainer [2020-09-25 01:59:47,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:59:47,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:59:47,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:59:47,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:59:47,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:59:46" (1/3) ... [2020-09-25 01:59:47,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bddcf3a 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 01:59:47,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:46" (2/3) ... [2020-09-25 01:59:47,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bddcf3a 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 01:59:47,212 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 01:59:47,214 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2020-09-25 01:59:47,227 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:59:47,238 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:59:47,262 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:59:47,297 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:59:47,297 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:59:47,297 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:59:47,297 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:59:47,297 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:59:47,297 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:59:47,297 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:59:47,297 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:59:47,321 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2020-09-25 01:59:47,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 01:59:47,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:47,333 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 01:59:47,333 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:47,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:47,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1930633076, now seen corresponding path program 1 times [2020-09-25 01:59:47,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:47,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735366310] [2020-09-25 01:59:47,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:47,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:47,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:47,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:47,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 01:59:47,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:59:47,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-09-25 01:59:47,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:47,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:47,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 01:59:47,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:47,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:59:47,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:47,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:47,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:47,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:47,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:47,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 01:59:47,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:47,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:48,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:48,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:48,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:48,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 01:59:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:59:48,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:59:48,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 01:59:48,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 01:59:48,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:48,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:48,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:59:48,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 01:59:48,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:48,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 01:59:48,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:48,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:48,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735366310] [2020-09-25 01:59:48,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:48,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:59:48,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337983687] [2020-09-25 01:59:48,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:59:48,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:48,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:59:48,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:59:48,173 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 4 states. [2020-09-25 01:59:48,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:48,466 INFO L93 Difference]: Finished difference Result 176 states and 204 transitions. [2020-09-25 01:59:48,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:59:48,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-09-25 01:59:48,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:48,483 INFO L225 Difference]: With dead ends: 176 [2020-09-25 01:59:48,483 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 01:59:48,489 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 01:59:48,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 01:59:48,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-25 01:59:48,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 01:59:48,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-09-25 01:59:48,556 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 35 [2020-09-25 01:59:48,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:48,557 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-09-25 01:59:48,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:59:48,557 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-09-25 01:59:48,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 01:59:48,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:48,561 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 01:59:48,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:59:48,561 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:48,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:48,562 INFO L82 PathProgramCache]: Analyzing trace with hash -330335414, now seen corresponding path program 1 times [2020-09-25 01:59:48,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:48,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004643255] [2020-09-25 01:59:48,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 01:59:48,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 01:59:48,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 01:59:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:48,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:48,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:48,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 01:59:48,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:48,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:48,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 01:59:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 01:59:49,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 01:59:49,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 01:59:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:49,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:49,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 01:59:49,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 01:59:49,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 01:59:49,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:49,224 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 01:59:49,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004643255] [2020-09-25 01:59:49,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:49,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:59:49,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555272537] [2020-09-25 01:59:49,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:59:49,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:49,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:59:49,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:59:49,230 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 6 states. [2020-09-25 01:59:49,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:49,481 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-09-25 01:59:49,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:59:49,482 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-25 01:59:49,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:49,487 INFO L225 Difference]: With dead ends: 123 [2020-09-25 01:59:49,487 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 01:59:49,489 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 01:59:49,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 01:59:49,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-09-25 01:59:49,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 01:59:49,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-25 01:59:49,506 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 49 [2020-09-25 01:59:49,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:49,507 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-25 01:59:49,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:59:49,507 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-25 01:59:49,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 01:59:49,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:49,509 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 01:59:49,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:59:49,510 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:49,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:49,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1062376204, now seen corresponding path program 1 times [2020-09-25 01:59:49,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:49,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751722861] [2020-09-25 01:59:49,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 01:59:49,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 01:59:49,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:49,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 01:59:49,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:49,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:49,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:49,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:59:49,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:49,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:49,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 01:59:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 01:59:49,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 01:59:49,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 01:59:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:49,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:49,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 01:59:49,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 01:59:49,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 01:59:49,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:49,968 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 01:59:49,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751722861] [2020-09-25 01:59:49,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:49,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:59:49,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401081103] [2020-09-25 01:59:49,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:59:49,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:49,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:59:49,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:59:49,971 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-25 01:59:50,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:50,189 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-25 01:59:50,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:59:50,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-09-25 01:59:50,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:50,192 INFO L225 Difference]: With dead ends: 127 [2020-09-25 01:59:50,192 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 01:59:50,193 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 01:59:50,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 01:59:50,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-25 01:59:50,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 01:59:50,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-25 01:59:50,203 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 50 [2020-09-25 01:59:50,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:50,204 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-25 01:59:50,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:59:50,204 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-25 01:59:50,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 01:59:50,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:50,206 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 01:59:50,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:59:50,206 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:50,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:50,207 INFO L82 PathProgramCache]: Analyzing trace with hash -536622705, now seen corresponding path program 1 times [2020-09-25 01:59:50,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:50,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510338400] [2020-09-25 01:59:50,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:50,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:50,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:50,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 01:59:50,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:50,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 01:59:50,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 01:59:50,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:50,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:50,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:50,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:50,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:50,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:50,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:50,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:59:50,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:50,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:50,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:50,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:50,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:50,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 01:59:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:50,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:50,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:50,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 01:59:50,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:50,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 01:59:50,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:50,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:50,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 01:59:50,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:50,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:50,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:50,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:50,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:50,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 01:59:50,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:50,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 01:59:50,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:50,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:50,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:50,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 01:59:50,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:50,606 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 01:59:50,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510338400] [2020-09-25 01:59:50,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:50,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:59:50,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128109673] [2020-09-25 01:59:50,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:59:50,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:50,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:59:50,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:59:50,609 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-25 01:59:50,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:50,829 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-25 01:59:50,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:59:50,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-25 01:59:50,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:50,832 INFO L225 Difference]: With dead ends: 127 [2020-09-25 01:59:50,832 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 01:59:50,833 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 01:59:50,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 01:59:50,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-25 01:59:50,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 01:59:50,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-25 01:59:50,842 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 51 [2020-09-25 01:59:50,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:50,843 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-25 01:59:50,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:59:50,843 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-25 01:59:50,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 01:59:50,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:50,845 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 01:59:50,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:59:50,846 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:50,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:50,846 INFO L82 PathProgramCache]: Analyzing trace with hash -389367439, now seen corresponding path program 1 times [2020-09-25 01:59:50,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:50,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732839611] [2020-09-25 01:59:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:50,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:50,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:50,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 01:59:50,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:50,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 01:59:50,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:50,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:50,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 01:59:50,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:50,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:51,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:51,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:51,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:51,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:51,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:51,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:59:51,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:51,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:51,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:51,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 01:59:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:51,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:51,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:51,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 01:59:51,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:51,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 01:59:51,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 01:59:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:51,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:51,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:51,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:51,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:51,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 01:59:51,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:51,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 01:59:51,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:51,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:51,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:51,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 01:59:51,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:51,254 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 01:59:51,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732839611] [2020-09-25 01:59:51,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:51,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:59:51,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628509182] [2020-09-25 01:59:51,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:59:51,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:51,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:59:51,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:59:51,257 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-25 01:59:51,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:51,467 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-25 01:59:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:59:51,468 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-25 01:59:51,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:51,469 INFO L225 Difference]: With dead ends: 127 [2020-09-25 01:59:51,469 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 01:59:51,470 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 01:59:51,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 01:59:51,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-25 01:59:51,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 01:59:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-25 01:59:51,492 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 52 [2020-09-25 01:59:51,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:51,493 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-25 01:59:51,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:59:51,493 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-25 01:59:51,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 01:59:51,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:51,495 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 01:59:51,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:59:51,496 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:51,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:51,497 INFO L82 PathProgramCache]: Analyzing trace with hash 323107249, now seen corresponding path program 1 times [2020-09-25 01:59:51,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:51,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217345049] [2020-09-25 01:59:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 01:59:51,518 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 01:59:51,519 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 01:59:51,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 01:59:51,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:59:51 BoogieIcfgContainer [2020-09-25 01:59:51,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:59:51,559 INFO L168 Benchmark]: Toolchain (without parser) took 5467.05 ms. Allocated memory was 148.4 MB in the beginning and 244.3 MB in the end (delta: 95.9 MB). Free memory was 104.6 MB in the beginning and 104.5 MB in the end (delta: 112.5 kB). Peak memory consumption was 96.1 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:51,560 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 01:59:51,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 501.01 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 104.0 MB in the beginning and 182.0 MB in the end (delta: -78.0 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:51,568 INFO L168 Benchmark]: Boogie Preprocessor took 51.68 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 180.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:51,569 INFO L168 Benchmark]: RCFGBuilder took 555.19 ms. Allocated memory is still 203.9 MB. Free memory was 179.5 MB in the beginning and 155.3 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:51,570 INFO L168 Benchmark]: TraceAbstraction took 4348.71 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 154.6 MB in the beginning and 104.5 MB in the end (delta: 50.1 MB). Peak memory consumption was 90.5 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:51,584 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 501.01 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 104.0 MB in the beginning and 182.0 MB in the end (delta: -78.0 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.68 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 180.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 555.19 ms. Allocated memory is still 203.9 MB. Free memory was 179.5 MB in the beginning and 155.3 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4348.71 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 154.6 MB in the beginning and 104.5 MB in the end (delta: 50.1 MB). Peak memory consumption was 90.5 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 79. 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: 4.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, 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, 0.2s 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, 2.4s 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...