/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:17:22,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:17:22,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:17:22,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:17:22,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:17:22,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:17:22,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:17:22,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:17:22,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:17:22,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:17:22,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:17:22,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:17:22,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:17:22,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:17:22,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:17:22,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:17:22,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:17:22,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:17:22,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:17:22,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:17:22,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:17:22,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:17:22,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:17:22,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:17:22,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:17:22,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:17:22,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:17:22,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:17:22,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:17:22,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:17:22,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:17:22,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:17:22,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:17:22,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:17:22,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:17:22,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:17:22,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:17:22,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:17:22,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:17:22,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:17:22,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:17:22,565 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:17:22,614 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:17:22,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:17:22,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:17:22,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:17:22,618 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:17:22,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:17:22,619 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:17:22,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:17:22,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:17:22,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:17:22,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:17:22,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:17:22,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:17:22,621 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:17:22,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:17:22,622 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:17:22,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:17:22,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:17:22,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:17:22,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:17:22,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:17:22,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:17:22,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:17:22,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:17:22,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:17:22,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:17:22,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:17:22,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:17:22,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:17:22,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:17:23,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:17:23,252 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:17:23,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:17:23,261 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:17:23,262 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:17:23,263 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-09-24 19:17:23,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee7e75fe0/82f28869bcae42d3b436881b291c0b1b/FLAG1bc1e27b8 [2020-09-24 19:17:23,897 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:17:23,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-09-24 19:17:23,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee7e75fe0/82f28869bcae42d3b436881b291c0b1b/FLAG1bc1e27b8 [2020-09-24 19:17:24,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee7e75fe0/82f28869bcae42d3b436881b291c0b1b [2020-09-24 19:17:24,245 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:17:24,252 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:17:24,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:24,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:17:24,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:17:24,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:24" (1/1) ... [2020-09-24 19:17:24,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1855c216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:24, skipping insertion in model container [2020-09-24 19:17:24,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:24" (1/1) ... [2020-09-24 19:17:24,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:17:24,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:17:24,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:24,550 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:17:24,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:24,708 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:17:24,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:24 WrapperNode [2020-09-24 19:17:24,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:24,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:17:24,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:17:24,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:17:24,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:24" (1/1) ... [2020-09-24 19:17:24,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:24" (1/1) ... [2020-09-24 19:17:24,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:24" (1/1) ... [2020-09-24 19:17:24,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:24" (1/1) ... [2020-09-24 19:17:24,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:24" (1/1) ... [2020-09-24 19:17:24,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:24" (1/1) ... [2020-09-24 19:17:24,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:24" (1/1) ... [2020-09-24 19:17:24,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:17:24,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:17:24,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:17:24,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:17:24,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:17:24,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:17:24,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:17:24,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-24 19:17:24,870 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-09-24 19:17:24,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-24 19:17:24,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:17:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:17:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 19:17:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-24 19:17:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:17:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 19:17:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:17:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:17:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-09-24 19:17:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-24 19:17:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:17:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:17:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:17:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 19:17:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:17:25,388 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:17:25,388 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 19:17:25,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:25 BoogieIcfgContainer [2020-09-24 19:17:25,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:17:25,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:17:25,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:17:25,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:17:25,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:17:24" (1/3) ... [2020-09-24 19:17:25,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9fff57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:25, skipping insertion in model container [2020-09-24 19:17:25,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:24" (2/3) ... [2020-09-24 19:17:25,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9fff57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:25, skipping insertion in model container [2020-09-24 19:17:25,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:25" (3/3) ... [2020-09-24 19:17:25,405 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-09-24 19:17:25,418 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:17:25,429 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:17:25,453 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:17:25,482 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:17:25,482 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:17:25,483 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:17:25,483 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:17:25,483 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:17:25,483 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:17:25,483 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:17:25,483 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:17:25,507 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2020-09-24 19:17:25,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 19:17:25,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:25,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:25,518 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:25,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:25,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1930633076, now seen corresponding path program 1 times [2020-09-24 19:17:25,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:25,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978356021] [2020-09-24 19:17:25,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:25,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:25,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:26,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:26,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 19:17:26,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:17:26,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-09-24 19:17:26,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:26,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:26,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 19:17:26,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:26,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 19:17:26,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:26,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:26,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:26,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:26,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:26,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 19:17:26,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:26,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:26,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:26,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:26,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:26,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:26,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:26,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:26,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:26,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:17:26,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:17:26,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 19:17:26,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:26,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:26,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:17:26,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:26,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:26,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:26,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:26,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:26,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 19:17:26,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:26,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:17:26,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 19:17:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:26,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:26,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978356021] [2020-09-24 19:17:26,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:26,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:17:26,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274347639] [2020-09-24 19:17:26,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:17:26,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:26,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:17:26,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:17:26,320 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 4 states. [2020-09-24 19:17:26,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:26,647 INFO L93 Difference]: Finished difference Result 176 states and 204 transitions. [2020-09-24 19:17:26,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:17:26,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-09-24 19:17:26,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:26,665 INFO L225 Difference]: With dead ends: 176 [2020-09-24 19:17:26,666 INFO L226 Difference]: Without dead ends: 87 [2020-09-24 19:17:26,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:17:26,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-24 19:17:26,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-24 19:17:26,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-24 19:17:26,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-09-24 19:17:26,745 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 35 [2020-09-24 19:17:26,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:26,746 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-09-24 19:17:26,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:17:26,746 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-09-24 19:17:26,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 19:17:26,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:26,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:26,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:17:26,751 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:26,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:26,752 INFO L82 PathProgramCache]: Analyzing trace with hash -330335414, now seen corresponding path program 1 times [2020-09-24 19:17:26,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:26,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294754472] [2020-09-24 19:17:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:26,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:27,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:27,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 19:17:27,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:27,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-24 19:17:27,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:27,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:27,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 19:17:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:27,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:17:27,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:27,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:27,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:27,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:27,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:27,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:17:27,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:27,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:27,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:27,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:27,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:17:27,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-24 19:17:27,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 19:17:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:27,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:27,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:27,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:27,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 19:17:27,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:27,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-24 19:17:27,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:17:27,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:27,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294754472] [2020-09-24 19:17:27,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:27,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:27,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603733191] [2020-09-24 19:17:27,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:27,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:27,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:27,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:27,522 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 6 states. [2020-09-24 19:17:27,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:27,803 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-09-24 19:17:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:27,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-24 19:17:27,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:27,808 INFO L225 Difference]: With dead ends: 123 [2020-09-24 19:17:27,809 INFO L226 Difference]: Without dead ends: 92 [2020-09-24 19:17:27,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:27,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-24 19:17:27,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-09-24 19:17:27,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 19:17:27,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-24 19:17:27,826 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 49 [2020-09-24 19:17:27,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:27,827 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-24 19:17:27,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:27,827 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-24 19:17:27,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 19:17:27,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:27,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:27,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:17:27,830 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:27,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:27,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1062376204, now seen corresponding path program 1 times [2020-09-24 19:17:27,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:27,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818400583] [2020-09-24 19:17:27,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:27,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:27,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:27,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 19:17:27,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:27,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-24 19:17:27,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:27,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:17:27,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:27,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:28,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:28,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:28,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:28,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:28,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:28,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:17:28,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:28,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:28,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:28,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:28,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:28,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 19:17:28,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:28,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 19:17:28,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:28,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:28,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 19:17:28,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:28,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:28,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:28,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:28,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:28,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:17:28,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:28,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 19:17:28,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:17:28,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:28,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818400583] [2020-09-24 19:17:28,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:28,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:28,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913281606] [2020-09-24 19:17:28,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:28,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:28,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:28,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:28,337 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-24 19:17:28,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:28,582 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-24 19:17:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:28,583 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-09-24 19:17:28,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:28,585 INFO L225 Difference]: With dead ends: 127 [2020-09-24 19:17:28,586 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 19:17:28,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:28,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 19:17:28,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-24 19:17:28,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 19:17:28,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-24 19:17:28,601 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 50 [2020-09-24 19:17:28,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:28,601 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-24 19:17:28,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:28,602 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-24 19:17:28,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 19:17:28,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:28,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:28,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:17:28,604 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:28,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:28,605 INFO L82 PathProgramCache]: Analyzing trace with hash -536622705, now seen corresponding path program 1 times [2020-09-24 19:17:28,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:28,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886869300] [2020-09-24 19:17:28,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:28,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:28,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:28,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 19:17:28,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:28,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 19:17:28,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 19:17:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:28,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:28,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:28,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:28,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:28,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:28,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:28,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:17:28,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:28,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:28,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:28,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:28,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:28,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:28,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:28,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:28,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 19:17:28,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:28,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 19:17:28,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 19:17:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:28,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:28,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:28,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:29,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:29,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 19:17:29,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:29,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 19:17:29,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:29,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:29,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:29,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:17:29,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:29,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:29,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886869300] [2020-09-24 19:17:29,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:29,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:29,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111662010] [2020-09-24 19:17:29,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:29,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:29,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:29,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:29,057 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-24 19:17:29,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:29,378 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-24 19:17:29,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:29,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-24 19:17:29,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:29,385 INFO L225 Difference]: With dead ends: 127 [2020-09-24 19:17:29,386 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 19:17:29,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:29,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 19:17:29,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-24 19:17:29,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 19:17:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-24 19:17:29,409 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 51 [2020-09-24 19:17:29,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:29,410 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-24 19:17:29,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:29,410 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-24 19:17:29,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 19:17:29,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:29,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:29,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:17:29,412 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:29,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:29,413 INFO L82 PathProgramCache]: Analyzing trace with hash -389367439, now seen corresponding path program 1 times [2020-09-24 19:17:29,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:29,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547227858] [2020-09-24 19:17:29,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:29,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:29,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:29,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:17:29,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:29,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-24 19:17:29,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:29,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:29,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:17:29,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:29,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:29,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:29,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:29,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:29,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:29,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:29,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:17:29,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:29,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:29,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:29,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:29,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:29,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:29,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:29,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:29,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 19:17:29,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:29,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 19:17:29,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:29,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:29,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 19:17:29,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:29,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:29,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:29,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:29,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:29,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 19:17:29,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:29,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 19:17:29,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:29,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:17:29,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:29,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:29,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547227858] [2020-09-24 19:17:29,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:29,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:29,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41429376] [2020-09-24 19:17:29,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:29,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:29,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:29,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:29,939 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-24 19:17:30,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:30,196 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-24 19:17:30,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:30,197 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-24 19:17:30,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:30,199 INFO L225 Difference]: With dead ends: 127 [2020-09-24 19:17:30,199 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 19:17:30,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:30,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 19:17:30,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-24 19:17:30,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 19:17:30,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-24 19:17:30,218 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 52 [2020-09-24 19:17:30,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:30,219 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-24 19:17:30,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:30,219 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-24 19:17:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 19:17:30,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:30,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:30,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:17:30,226 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:30,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:30,226 INFO L82 PathProgramCache]: Analyzing trace with hash 323107249, now seen corresponding path program 1 times [2020-09-24 19:17:30,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:30,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687111396] [2020-09-24 19:17:30,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:17:30,253 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:17:30,253 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:17:30,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:17:30,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:17:30 BoogieIcfgContainer [2020-09-24 19:17:30,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:17:30,293 INFO L168 Benchmark]: Toolchain (without parser) took 6043.71 ms. Allocated memory was 146.3 MB in the beginning and 248.0 MB in the end (delta: 101.7 MB). Free memory was 102.4 MB in the beginning and 113.7 MB in the end (delta: -11.3 MB). Peak memory consumption was 90.4 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:30,294 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:17:30,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 457.20 ms. Allocated memory was 146.3 MB in the beginning and 201.3 MB in the end (delta: 55.1 MB). Free memory was 101.8 MB in the beginning and 179.6 MB in the end (delta: -77.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:30,302 INFO L168 Benchmark]: Boogie Preprocessor took 60.05 ms. Allocated memory is still 201.3 MB. Free memory was 179.6 MB in the beginning and 177.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:30,302 INFO L168 Benchmark]: RCFGBuilder took 623.27 ms. Allocated memory is still 201.3 MB. Free memory was 177.2 MB in the beginning and 153.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:30,303 INFO L168 Benchmark]: TraceAbstraction took 4892.93 ms. Allocated memory was 201.3 MB in the beginning and 248.0 MB in the end (delta: 46.7 MB). Free memory was 152.4 MB in the beginning and 113.7 MB in the end (delta: 38.7 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:30,316 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 457.20 ms. Allocated memory was 146.3 MB in the beginning and 201.3 MB in the end (delta: 55.1 MB). Free memory was 101.8 MB in the beginning and 179.6 MB in the end (delta: -77.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.05 ms. Allocated memory is still 201.3 MB. Free memory was 179.6 MB in the beginning and 177.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 623.27 ms. Allocated memory is still 201.3 MB. Free memory was 177.2 MB in the beginning and 153.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4892.93 ms. Allocated memory was 201.3 MB in the beginning and 248.0 MB in the end (delta: 46.7 MB). Free memory was 152.4 MB in the beginning and 113.7 MB in the end (delta: 38.7 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L81] CALL, EXPR fmax_double(x, y) [L52] CALL, EXPR __fpclassify_double(x) [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; [L52] RET, EXPR __fpclassify_double(x) [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; [L81] RET, EXPR fmax_double(x, y) [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 471 SDtfs, 99 SDslu, 970 SDs, 0 SdLazy, 655 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 289 NumberOfCodeBlocks, 289 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 232 ConstructedInterpolants, 0 QuantifiedInterpolants, 20602 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...