/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:07:33,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:07:33,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:07:33,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:07:33,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:07:33,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:07:33,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:07:33,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:07:33,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:07:33,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:07:33,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:07:33,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:07:33,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:07:33,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:07:33,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:07:33,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:07:33,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:07:33,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:07:33,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:07:33,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:07:33,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:07:33,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:07:33,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:07:33,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:07:33,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:07:33,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:07:33,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:07:33,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:07:33,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:07:33,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:07:33,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:07:33,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:07:33,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:07:33,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:07:33,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:07:33,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:07:33,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:07:33,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:07:33,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:07:33,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:07:33,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:07:33,502 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 [2020-10-29 09:07:33,555 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:07:33,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:07:33,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:07:33,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:07:33,561 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:07:33,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:07:33,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:07:33,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:07:33,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:07:33,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:07:33,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:07:33,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:07:33,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:07:33,564 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:07:33,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:07:33,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:07:33,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:07:33,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:07:33,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:07:33,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:07:33,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:07:33,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:07:33,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:07:33,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:07:33,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:07:33,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:07:33,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:07:33,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:07:33,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:07:33,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:07:33,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:07:34,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:07:34,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:07:34,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:07:34,016 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:07:34,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2020-10-29 09:07:34,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47563733b/972635a447ef43dc924bd66328671a89/FLAG1a288f99e [2020-10-29 09:07:34,757 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:07:34,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2020-10-29 09:07:34,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47563733b/972635a447ef43dc924bd66328671a89/FLAG1a288f99e [2020-10-29 09:07:35,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47563733b/972635a447ef43dc924bd66328671a89 [2020-10-29 09:07:35,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:07:35,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:07:35,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:07:35,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:07:35,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:07:35,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:07:35" (1/1) ... [2020-10-29 09:07:35,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35906d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:35, skipping insertion in model container [2020-10-29 09:07:35,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:07:35" (1/1) ... [2020-10-29 09:07:35,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:07:35,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:07:35,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:07:35,419 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:07:35,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:07:35,467 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:07:35,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:35 WrapperNode [2020-10-29 09:07:35,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:07:35,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:07:35,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:07:35,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:07:35,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:35" (1/1) ... [2020-10-29 09:07:35,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:35" (1/1) ... [2020-10-29 09:07:35,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:35" (1/1) ... [2020-10-29 09:07:35,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:35" (1/1) ... [2020-10-29 09:07:35,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:35" (1/1) ... [2020-10-29 09:07:35,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:35" (1/1) ... [2020-10-29 09:07:35,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:35" (1/1) ... [2020-10-29 09:07:35,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:07:35,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:07:35,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:07:35,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:07:35,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:07:35,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:07:35,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:07:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:07:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-29 09:07:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-10-29 09:07:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-10-29 09:07:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:07:35,643 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:07:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:07:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:07:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:07:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-29 09:07:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-29 09:07:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-10-29 09:07:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:07:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:07:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:07:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-10-29 09:07:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:07:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:07:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:07:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:07:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:07:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:07:36,065 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:07:36,065 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 09:07:36,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:07:36 BoogieIcfgContainer [2020-10-29 09:07:36,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:07:36,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:07:36,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:07:36,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:07:36,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:07:35" (1/3) ... [2020-10-29 09:07:36,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b573816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:07:36, skipping insertion in model container [2020-10-29 09:07:36,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:35" (2/3) ... [2020-10-29 09:07:36,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b573816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:07:36, skipping insertion in model container [2020-10-29 09:07:36,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:07:36" (3/3) ... [2020-10-29 09:07:36,077 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2020-10-29 09:07:36,089 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:07:36,094 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:07:36,108 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:07:36,137 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:07:36,137 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:07:36,138 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:07:36,138 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:07:36,138 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:07:36,138 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:07:36,138 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:07:36,138 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:07:36,157 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-29 09:07:36,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 09:07:36,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:36,166 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] [2020-10-29 09:07:36,167 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:36,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:36,173 INFO L82 PathProgramCache]: Analyzing trace with hash 934597240, now seen corresponding path program 1 times [2020-10-29 09:07:36,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:36,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688892054] [2020-10-29 09:07:36,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:36,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:36,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:36,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:36,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:07:36,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:07:36,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-29 09:07:36,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:36,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 09:07:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:36,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:07:37,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:37,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:37,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:37,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:37,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:37,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:07:37,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:37,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:37,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:37,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:37,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:07:37,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:07:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:37,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:37,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:37,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:37,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:37,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:07:37,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:37,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:37,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:37,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:07:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:37,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:37,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:37,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:37,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:07:37,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:07:37,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 09:07:37,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:37,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:37,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:37,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 09:07:37,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:37,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:37,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:07:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:37,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:37,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:37,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:37,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:07:37,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:07:37,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 09:07:37,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:37,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:37,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:07:37,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:37,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688892054] [2020-10-29 09:07:37,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:07:37,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:07:37,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823489158] [2020-10-29 09:07:37,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:07:37,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:37,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:07:37,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:07:37,357 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 6 states. [2020-10-29 09:07:37,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:37,610 INFO L93 Difference]: Finished difference Result 81 states and 106 transitions. [2020-10-29 09:07:37,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:07:37,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-29 09:07:37,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:37,623 INFO L225 Difference]: With dead ends: 81 [2020-10-29 09:07:37,624 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 09:07:37,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:07:37,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 09:07:37,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-29 09:07:37,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 09:07:37,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-29 09:07:37,681 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 28 [2020-10-29 09:07:37,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:37,682 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-29 09:07:37,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:07:37,682 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-29 09:07:37,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 09:07:37,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:37,684 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] [2020-10-29 09:07:37,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:07:37,685 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:37,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:37,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1479577563, now seen corresponding path program 1 times [2020-10-29 09:07:37,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:37,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355088186] [2020-10-29 09:07:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:37,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:37,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:37,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 09:07:37,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:37,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 09:07:37,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:37,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:37,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:37,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 09:07:37,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:37,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:37,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:37,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:37,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:37,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:37,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:37,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:07:37,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:37,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:37,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:37,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:37,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:37,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:37,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:07:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:37,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:37,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:37,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:37,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:37,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:07:37,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:37,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:37,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:37,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:37,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:07:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:37,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:07:38,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:38,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 09:07:38,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:38,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-29 09:07:38,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:38,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:38,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:07:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:38,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:07:38,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:38,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 09:07:38,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:38,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:07:38,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:38,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355088186] [2020-10-29 09:07:38,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:07:38,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:07:38,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052401731] [2020-10-29 09:07:38,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:07:38,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:38,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:07:38,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:07:38,203 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 6 states. [2020-10-29 09:07:38,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:38,385 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-10-29 09:07:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:07:38,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-29 09:07:38,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:38,387 INFO L225 Difference]: With dead ends: 53 [2020-10-29 09:07:38,387 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 09:07:38,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:07:38,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 09:07:38,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-29 09:07:38,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 09:07:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-29 09:07:38,400 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 30 [2020-10-29 09:07:38,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:38,401 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-29 09:07:38,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:07:38,401 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-29 09:07:38,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:07:38,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:38,403 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] [2020-10-29 09:07:38,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:07:38,403 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:38,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:38,404 INFO L82 PathProgramCache]: Analyzing trace with hash 21423307, now seen corresponding path program 1 times [2020-10-29 09:07:38,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:38,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473337018] [2020-10-29 09:07:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:38,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:07:38,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:38,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 09:07:38,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 09:07:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:38,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:38,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:38,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:38,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:38,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 09:07:38,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:38,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:38,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:07:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:38,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:38,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:38,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:07:38,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:38,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:38,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:38,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:38,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:07:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:38,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:07:38,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:38,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 09:07:38,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:38,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:07:38,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:38,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:38,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:07:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:38,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:07:38,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:38,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 09:07:38,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:38,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:38,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:07:38,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:38,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473337018] [2020-10-29 09:07:38,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:07:38,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:07:38,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031633622] [2020-10-29 09:07:38,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:07:38,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:38,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:07:38,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:07:38,786 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 6 states. [2020-10-29 09:07:39,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:39,003 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2020-10-29 09:07:39,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:07:39,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-29 09:07:39,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:39,007 INFO L225 Difference]: With dead ends: 57 [2020-10-29 09:07:39,007 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 09:07:39,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:07:39,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 09:07:39,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-10-29 09:07:39,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 09:07:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-29 09:07:39,025 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 31 [2020-10-29 09:07:39,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:39,028 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-29 09:07:39,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:07:39,028 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-29 09:07:39,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 09:07:39,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:39,031 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] [2020-10-29 09:07:39,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:07:39,031 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:39,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:39,032 INFO L82 PathProgramCache]: Analyzing trace with hash -829556513, now seen corresponding path program 1 times [2020-10-29 09:07:39,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:39,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304280311] [2020-10-29 09:07:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:39,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:39,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:39,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:07:39,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:39,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 09:07:39,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:39,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:39,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:39,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 09:07:39,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:39,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:39,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:39,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:39,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:39,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:39,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:39,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:07:39,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:39,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:39,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:39,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 09:07:39,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:07:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:39,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:39,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:39,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:39,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:39,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:07:39,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:39,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:39,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:39,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:39,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:07:39,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:07:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:39,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:39,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:39,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:07:39,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:39,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 09:07:39,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:39,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:07:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:39,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:39,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:07:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:39,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:39,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:39,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 09:07:39,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:39,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 09:07:39,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:39,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:07:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:39,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:07:39,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304280311] [2020-10-29 09:07:39,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:07:39,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:07:39,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38067915] [2020-10-29 09:07:39,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:07:39,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:39,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:07:39,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:07:39,415 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 6 states. [2020-10-29 09:07:39,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:39,599 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-10-29 09:07:39,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:07:39,599 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-29 09:07:39,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:39,601 INFO L225 Difference]: With dead ends: 53 [2020-10-29 09:07:39,601 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 09:07:39,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:07:39,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 09:07:39,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-29 09:07:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 09:07:39,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-29 09:07:39,610 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 32 [2020-10-29 09:07:39,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:39,611 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-29 09:07:39,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:07:39,611 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-29 09:07:39,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 09:07:39,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:39,612 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] [2020-10-29 09:07:39,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:07:39,613 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:39,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:39,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1668459424, now seen corresponding path program 1 times [2020-10-29 09:07:39,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:39,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826390657] [2020-10-29 09:07:39,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:07:39,630 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:07:39,630 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:07:39,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:07:39,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:07:39 BoogieIcfgContainer [2020-10-29 09:07:39,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:07:39,661 INFO L168 Benchmark]: Toolchain (without parser) took 4514.23 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 113.6 MB in the beginning and 75.1 MB in the end (delta: 38.5 MB). Peak memory consumption was 71.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:39,662 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 159.4 MB. Free memory is still 130.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:07:39,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.86 ms. Allocated memory is still 159.4 MB. Free memory was 113.0 MB in the beginning and 102.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:39,666 INFO L168 Benchmark]: Boogie Preprocessor took 89.19 ms. Allocated memory is still 159.4 MB. Free memory was 102.7 MB in the beginning and 140.5 MB in the end (delta: -37.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:39,669 INFO L168 Benchmark]: RCFGBuilder took 507.38 ms. Allocated memory is still 159.4 MB. Free memory was 140.5 MB in the beginning and 122.1 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:39,674 INFO L168 Benchmark]: TraceAbstraction took 3589.30 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 121.6 MB in the beginning and 75.1 MB in the end (delta: 46.5 MB). Peak memory consumption was 80.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:39,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 159.4 MB. Free memory is still 130.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 312.86 ms. Allocated memory is still 159.4 MB. Free memory was 113.0 MB in the beginning and 102.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 89.19 ms. Allocated memory is still 159.4 MB. Free memory was 102.7 MB in the beginning and 140.5 MB in the end (delta: -37.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 507.38 ms. Allocated memory is still 159.4 MB. Free memory was 140.5 MB in the beginning and 122.1 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3589.30 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 121.6 MB in the beginning and 75.1 MB in the end (delta: 46.5 MB). Peak memory consumption was 80.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 69, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L62] double x = __VERIFIER_nondet_double(); [L63] double y = 0.0 / 0.0; [L64] CALL, EXPR isnan_double(x) [L18] return x != x; [L64] RET, EXPR isnan_double(x) [L64] COND TRUE !isnan_double(x) [L66] CALL, EXPR fmin_double(x, y) [L47] CALL, EXPR __fpclassify_double(x) [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] RET, EXPR __fpclassify_double(x) [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L66] RET, EXPR fmin_double(x, y) [L66] double res = fmin_double(x, y); [L69] COND TRUE res != x [L70] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1231b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 181 SDtfs, 70 SDslu, 376 SDs, 0 SdLazy, 304 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 10685 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...