/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_1251b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:07:34,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:07:34,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:07:34,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:07:34,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:07:34,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:07:34,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:07:34,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:07:34,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:07:34,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:07:34,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:07:34,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:07:34,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:07:34,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:07:34,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:07:34,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:07:34,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:07:34,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:07:34,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:07:34,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:07:34,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:07:34,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:07:34,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:07:34,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:07:34,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:07:34,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:07:34,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:07:34,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:07:34,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:07:34,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:07:34,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:07:34,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:07:34,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:07:34,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:07:34,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:07:34,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:07:34,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:07:34,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:07:34,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:07:34,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:07:34,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:07:34,546 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 09:07:34,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:07:34,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:07:34,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:07:34,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:07:34,598 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:07:34,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:07:34,599 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:07:34,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:07:34,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:07:34,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:07:34,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:07:34,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:07:34,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:07:34,601 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:07:34,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:07:34,602 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:07:34,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:07:34,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:07:34,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:07:34,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:07:34,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:07:34,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:07:34,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:07:34,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:07:34,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:07:34,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:07:34,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:07:34,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:07:34,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:07:34,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:07:35,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:07:35,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:07:35,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:07:35,041 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:07:35,041 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:07:35,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-10-29 09:07:35,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac15e07a8/71925e8b45474a91a49c66b09475db34/FLAG6b71c4385 [2020-10-29 09:07:35,810 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:07:35,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-10-29 09:07:35,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac15e07a8/71925e8b45474a91a49c66b09475db34/FLAG6b71c4385 [2020-10-29 09:07:36,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac15e07a8/71925e8b45474a91a49c66b09475db34 [2020-10-29 09:07:36,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:07:36,185 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:07:36,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:07:36,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:07:36,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:07:36,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd6ea22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36, skipping insertion in model container [2020-10-29 09:07:36,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:07:36,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:07:36,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:07:36,430 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:07:36,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:07:36,485 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:07:36,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36 WrapperNode [2020-10-29 09:07:36,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:07:36,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:07:36,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:07:36,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:07:36,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (1/1) ... [2020-10-29 09:07:36,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:07:36,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:07:36,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:07:36,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:07:36,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (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 09:07:36,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:07:36,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:07:36,612 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:07:36,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-29 09:07:36,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-10-29 09:07:36,612 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-10-29 09:07:36,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:07:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:07:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:07:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:07:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:07:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-29 09:07:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-29 09:07:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-10-29 09:07:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:07:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:07:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:07:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-10-29 09:07:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:07:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:07:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:07:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:07:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:07:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:07:37,286 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:07:37,287 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 09:07:37,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:07:37 BoogieIcfgContainer [2020-10-29 09:07:37,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:07:37,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:07:37,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:07:37,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:07:37,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:07:36" (1/3) ... [2020-10-29 09:07:37,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65409a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:07:37, skipping insertion in model container [2020-10-29 09:07:37,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:07:36" (2/3) ... [2020-10-29 09:07:37,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65409a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:07:37, skipping insertion in model container [2020-10-29 09:07:37,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:07:37" (3/3) ... [2020-10-29 09:07:37,301 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2020-10-29 09:07:37,316 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:07:37,322 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:07:37,338 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:07:37,371 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:07:37,371 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:07:37,371 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:07:37,372 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:07:37,372 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:07:37,372 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:07:37,372 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:07:37,372 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:07:37,393 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-29 09:07:37,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 09:07:37,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:37,402 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 09:07:37,402 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:37,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:37,409 INFO L82 PathProgramCache]: Analyzing trace with hash 976255988, now seen corresponding path program 1 times [2020-10-29 09:07:37,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:37,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94908967] [2020-10-29 09:07:37,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:37,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:37,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:37,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:37,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 09:07:37,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:07:37,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-29 09:07:37,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:37,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:37,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:37,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 09:07:37,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:37,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:07:38,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:38,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:38,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:38,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:07:38,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:38,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:38,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:38,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:38,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:07:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:38,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:38,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:38,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:07:38,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:38,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:38,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:38,085 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 12 [2020-10-29 09:07:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:38,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:07:38,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:07:38,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 09:07:38,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:38,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 09:07:38,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:38,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:38,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:07:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:07:38,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:07:38,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 09:07:38,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:38,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:38,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:07:38,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:38,300 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 09:07:38,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94908967] [2020-10-29 09:07:38,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:07:38,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:07:38,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153911855] [2020-10-29 09:07:38,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:07:38,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:38,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:07:38,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:07:38,327 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 6 states. [2020-10-29 09:07:38,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:38,642 INFO L93 Difference]: Finished difference Result 81 states and 106 transitions. [2020-10-29 09:07:38,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:07:38,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-29 09:07:38,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:38,657 INFO L225 Difference]: With dead ends: 81 [2020-10-29 09:07:38,658 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 09:07:38,663 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 09:07:38,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 09:07:38,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-29 09:07:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 09:07:38,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-29 09:07:38,742 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 28 [2020-10-29 09:07:38,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:38,743 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-29 09:07:38,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:07:38,743 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-29 09:07:38,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 09:07:38,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:38,746 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 09:07:38,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:07:38,746 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:38,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:38,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1564393961, now seen corresponding path program 1 times [2020-10-29 09:07:38,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:38,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723927866] [2020-10-29 09:07:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:38,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 09:07:38,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:38,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 09:07:38,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 09:07:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:38,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:38,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:38,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:38,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:38,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:07:38,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:38,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:38,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:38,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:38,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:07:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:38,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:38,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:38,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:38,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:38,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:07:38,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:38,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:38,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:38,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:38,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:38,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:38,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:07:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:39,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:39,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:39,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:07:39,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:39,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 09:07:39,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:39,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-29 09:07:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:39,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:39,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:07:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:39,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:39,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:39,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:07:39,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:39,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 09:07:39,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:39,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:39,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:39,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:39,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:07:39,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:39,133 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 09:07:39,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723927866] [2020-10-29 09:07:39,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:07:39,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:07:39,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585322601] [2020-10-29 09:07:39,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:07:39,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:39,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:07:39,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:07:39,137 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 6 states. [2020-10-29 09:07:39,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:39,336 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-10-29 09:07:39,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:07:39,337 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-29 09:07:39,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:39,339 INFO L225 Difference]: With dead ends: 53 [2020-10-29 09:07:39,339 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 09:07:39,340 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 09:07:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 09:07:39,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-29 09:07:39,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 09:07:39,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-29 09:07:39,352 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 30 [2020-10-29 09:07:39,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:39,353 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-29 09:07:39,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:07:39,353 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-29 09:07:39,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:07:39,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:39,355 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 09:07:39,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:07:39,355 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:39,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:39,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1083099565, now seen corresponding path program 1 times [2020-10-29 09:07:39,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:39,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643913904] [2020-10-29 09:07:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:39,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:39,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:39,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:07:39,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:39,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 09:07:39,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:39,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:39,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:39,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 09:07:39,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:39,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:07:39,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:39,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:39,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:39,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:39,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:39,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:07:39,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:39,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:39,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:39,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:07:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:39,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:39,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:39,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:39,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:39,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:07:39,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:39,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:39,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:07:39,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:07:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:39,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:39,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:39,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:07:39,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:39,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 09:07:39,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:39,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:39,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:39,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:07:39,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:39,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:39,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:07:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:39,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:39,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:39,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 09:07:39,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:39,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 09:07:39,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:39,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:39,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:39,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:39,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:07:39,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:39,808 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 09:07:39,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643913904] [2020-10-29 09:07:39,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:07:39,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:07:39,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716071408] [2020-10-29 09:07:39,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:07:39,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:39,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:07:39,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:07:39,810 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 6 states. [2020-10-29 09:07:40,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:40,012 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2020-10-29 09:07:40,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:07:40,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-29 09:07:40,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:40,014 INFO L225 Difference]: With dead ends: 57 [2020-10-29 09:07:40,015 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 09:07:40,015 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 09:07:40,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 09:07:40,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-10-29 09:07:40,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 09:07:40,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-29 09:07:40,025 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 31 [2020-10-29 09:07:40,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:40,026 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-29 09:07:40,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:07:40,026 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-29 09:07:40,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 09:07:40,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:40,027 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 09:07:40,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:07:40,028 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:40,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:40,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1341817893, now seen corresponding path program 1 times [2020-10-29 09:07:40,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:40,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930926469] [2020-10-29 09:07:40,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:40,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:40,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:40,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:07:40,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:40,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 09:07:40,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:40,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:40,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:40,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 09:07:40,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:40,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:40,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:07:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:40,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:40,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:40,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:40,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:40,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:07:40,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:40,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:40,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:40,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:07:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:40,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:40,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:40,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:07:40,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:40,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:07:40,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:40,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:07:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:07:40,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:40,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 09:07:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:40,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:40,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:40,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:07:40,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:40,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 09:07:40,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:40,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:40,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:40,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:07:40,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:07:40,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:40,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:07:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:07:40,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:07:40,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:07:40,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 09:07:40,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:07:40,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 09:07:40,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:07:40,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:07:40,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:07:40,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:07:40,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:07:40,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:07:40,369 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 09:07:40,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930926469] [2020-10-29 09:07:40,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:07:40,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:07:40,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338668580] [2020-10-29 09:07:40,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:07:40,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:07:40,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:07:40,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:07:40,372 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 6 states. [2020-10-29 09:07:40,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:07:40,546 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-10-29 09:07:40,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:07:40,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-29 09:07:40,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:07:40,548 INFO L225 Difference]: With dead ends: 53 [2020-10-29 09:07:40,548 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 09:07:40,549 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 09:07:40,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 09:07:40,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-29 09:07:40,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 09:07:40,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-29 09:07:40,558 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 32 [2020-10-29 09:07:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:07:40,558 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-29 09:07:40,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:07:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-29 09:07:40,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 09:07:40,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:07:40,560 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 09:07:40,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:07:40,560 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:07:40,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:07:40,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1156198044, now seen corresponding path program 1 times [2020-10-29 09:07:40,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:07:40,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364900314] [2020-10-29 09:07:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:07:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:07:40,578 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:07:40,579 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:07:40,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:07:40,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:07:40 BoogieIcfgContainer [2020-10-29 09:07:40,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:07:40,605 INFO L168 Benchmark]: Toolchain (without parser) took 4427.56 ms. Allocated memory was 151.0 MB in the beginning and 189.8 MB in the end (delta: 38.8 MB). Free memory was 126.5 MB in the beginning and 111.9 MB in the end (delta: 14.6 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:40,605 INFO L168 Benchmark]: CDTParser took 1.63 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 123.3 MB in the end (delta: 137.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:07:40,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.35 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:40,607 INFO L168 Benchmark]: Boogie Preprocessor took 45.40 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:40,608 INFO L168 Benchmark]: RCFGBuilder took 756.62 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 129.5 MB in the end (delta: -15.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:40,609 INFO L168 Benchmark]: TraceAbstraction took 3310.13 ms. Allocated memory was 151.0 MB in the beginning and 189.8 MB in the end (delta: 38.8 MB). Free memory was 129.0 MB in the beginning and 111.9 MB in the end (delta: 17.1 MB). Peak memory consumption was 56.9 MB. Max. memory is 8.0 GB. [2020-10-29 09:07:40,613 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.63 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 123.3 MB in the end (delta: 137.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 297.35 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.40 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 756.62 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 129.5 MB in the end (delta: -15.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3310.13 ms. Allocated memory was 151.0 MB in the beginning and 189.8 MB in the end (delta: 38.8 MB). Free memory was 129.0 MB in the beginning and 111.9 MB in the end (delta: 17.1 MB). Peak memory consumption was 56.9 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 79, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L66] double x = __VERIFIER_nondet_double(); [L67] double y = 0.0 / 0.0; [L74] CALL, EXPR isnan_double(x) [L18] return x != x; [L74] RET, EXPR isnan_double(x) [L74] COND TRUE !isnan_double(x) [L76] CALL, EXPR fmax_double(x, y) [L57] CALL, EXPR __fpclassify_double(x) [L29] __uint32_t msw, lsw; [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; [L57] RET, EXPR __fpclassify_double(x) [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; [L76] RET, EXPR fmax_double(x, y) [L76] double res = fmax_double(x, y); [L79] COND TRUE res != x [L80] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1251b.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: 3.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.9s, 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, 0.5s 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, 1.8s 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...