/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --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/float_req_bl_1232b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:44:40,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:44:40,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:44:40,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:44:40,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:44:40,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:44:40,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:44:40,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:44:40,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:44:40,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:44:40,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:44:40,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:44:40,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:44:40,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:44:40,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:44:40,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:44:40,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:44:40,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:44:40,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:44:40,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:44:40,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:44:40,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:44:40,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:44:40,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:44:40,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:44:40,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:44:40,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:44:40,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:44:40,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:44:40,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:44:40,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:44:40,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:44:40,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:44:40,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:44:40,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:44:40,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:44:40,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:44:40,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:44:40,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:44:40,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:44:40,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:44:40,455 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 23:44:40,501 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:44:40,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:44:40,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:44:40,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:44:40,504 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:44:40,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:44:40,505 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:44:40,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:44:40,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:44:40,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:44:40,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:44:40,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:44:40,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:44:40,507 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:44:40,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:44:40,508 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:44:40,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:44:40,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:44:40,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:44:40,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:44:40,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:44:40,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:44:40,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:44:40,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:44:40,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:44:40,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:44:40,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:44:40,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:44:40,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:44:40,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:44:41,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:44:41,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:44:41,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:44:41,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:44:41,070 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:44:41,071 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-09-24 23:44:41,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cc415091/24a3ce964d804302b8e39e9461feaaad/FLAGb40d840a6 [2020-09-24 23:44:41,739 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:44:41,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-09-24 23:44:41,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cc415091/24a3ce964d804302b8e39e9461feaaad/FLAGb40d840a6 [2020-09-24 23:44:42,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cc415091/24a3ce964d804302b8e39e9461feaaad [2020-09-24 23:44:42,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:44:42,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:44:42,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:44:42,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:44:42,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:44:42,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:42" (1/1) ... [2020-09-24 23:44:42,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231fe863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:42, skipping insertion in model container [2020-09-24 23:44:42,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:42" (1/1) ... [2020-09-24 23:44:42,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:44:42,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:44:42,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:44:42,407 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:44:42,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:44:42,465 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:44:42,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:42 WrapperNode [2020-09-24 23:44:42,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:44:42,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:44:42,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:44:42,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:44:42,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:42" (1/1) ... [2020-09-24 23:44:42,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:42" (1/1) ... [2020-09-24 23:44:42,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:42" (1/1) ... [2020-09-24 23:44:42,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:42" (1/1) ... [2020-09-24 23:44:42,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:42" (1/1) ... [2020-09-24 23:44:42,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:42" (1/1) ... [2020-09-24 23:44:42,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:42" (1/1) ... [2020-09-24 23:44:42,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:44:42,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:44:42,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:44:42,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:44:42,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:42" (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 23:44:42,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:44:42,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:44:42,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-09-24 23:44:42,671 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-09-24 23:44:42,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-24 23:44:42,672 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:44:42,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:44:42,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-24 23:44:42,673 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-09-24 23:44:42,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:44:42,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 23:44:42,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:44:42,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:44:42,674 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-09-24 23:44:42,675 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-24 23:44:42,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:44:42,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:44:42,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:44:42,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:44:42,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 23:44:43,120 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:44:43,121 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 23:44:43,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:43 BoogieIcfgContainer [2020-09-24 23:44:43,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:44:43,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:44:43,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:44:43,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:44:43,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:44:42" (1/3) ... [2020-09-24 23:44:43,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b58f2a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:43, skipping insertion in model container [2020-09-24 23:44:43,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:42" (2/3) ... [2020-09-24 23:44:43,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b58f2a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:43, skipping insertion in model container [2020-09-24 23:44:43,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:43" (3/3) ... [2020-09-24 23:44:43,136 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2020-09-24 23:44:43,147 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:44:43,158 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:44:43,179 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:44:43,209 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:44:43,209 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:44:43,210 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:44:43,210 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:44:43,210 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:44:43,210 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:44:43,210 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:44:43,210 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:44:43,232 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-09-24 23:44:43,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 23:44:43,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:43,242 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] [2020-09-24 23:44:43,243 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:43,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:43,250 INFO L82 PathProgramCache]: Analyzing trace with hash -380814032, now seen corresponding path program 1 times [2020-09-24 23:44:43,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:43,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407567478] [2020-09-24 23:44:43,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:43,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:43,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:43,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:43,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 23:44:43,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:44:43,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-09-24 23:44:43,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:43,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 23:44:43,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:43,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 23:44:43,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:44:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:43,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:43,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:44:43,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:43,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:44:43,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:43,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:43,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:43,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:43,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:44:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:43,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:43,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:43,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:43,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 23:44:43,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:44:43,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 23:44:43,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 23:44:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:43,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:43,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:44:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:44,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:44,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:44,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:44:44,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:44,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 23:44:44,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 23:44:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:44,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:44,029 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 23:44:44,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407567478] [2020-09-24 23:44:44,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:44:44,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:44:44,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176142538] [2020-09-24 23:44:44,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:44:44,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:44:44,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:44:44,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:44:44,064 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-09-24 23:44:44,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:44:44,387 INFO L93 Difference]: Finished difference Result 164 states and 192 transitions. [2020-09-24 23:44:44,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 23:44:44,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-24 23:44:44,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:44:44,404 INFO L225 Difference]: With dead ends: 164 [2020-09-24 23:44:44,404 INFO L226 Difference]: Without dead ends: 81 [2020-09-24 23:44:44,410 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 23:44:44,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-24 23:44:44,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-24 23:44:44,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-24 23:44:44,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2020-09-24 23:44:44,493 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 34 [2020-09-24 23:44:44,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:44:44,494 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2020-09-24 23:44:44,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:44:44,494 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2020-09-24 23:44:44,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 23:44:44,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:44,498 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] [2020-09-24 23:44:44,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:44:44,498 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:44,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:44,499 INFO L82 PathProgramCache]: Analyzing trace with hash 133434162, now seen corresponding path program 1 times [2020-09-24 23:44:44,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:44,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763613424] [2020-09-24 23:44:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:44,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:44,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:44,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 23:44:44,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:44,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-24 23:44:44,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:44,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:44,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 23:44:44,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:44:44,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:44,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:44:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:44,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:44,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:44,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:44:44,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:44,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:44:44,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:44,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:44,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:44:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:44,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:44,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:44,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:44:44,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:44,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 23:44:44,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:44,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:44,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 23:44:44,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:44:44,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:44,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:44:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:44,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:44,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:44,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:44:44,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:44,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 23:44:44,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:44,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:44,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:44,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:44:44,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:44,990 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 23:44:44,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763613424] [2020-09-24 23:44:44,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:44:44,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:44:44,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332918950] [2020-09-24 23:44:44,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:44:44,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:44:44,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:44:44,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:44:44,995 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 6 states. [2020-09-24 23:44:45,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:44:45,208 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-09-24 23:44:45,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 23:44:45,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-09-24 23:44:45,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:44:45,213 INFO L225 Difference]: With dead ends: 117 [2020-09-24 23:44:45,213 INFO L226 Difference]: Without dead ends: 86 [2020-09-24 23:44:45,215 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 23:44:45,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-24 23:44:45,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-09-24 23:44:45,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 23:44:45,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-24 23:44:45,231 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 43 [2020-09-24 23:44:45,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:44:45,231 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-24 23:44:45,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:44:45,232 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-24 23:44:45,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 23:44:45,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:45,234 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] [2020-09-24 23:44:45,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:44:45,234 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:45,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:45,235 INFO L82 PathProgramCache]: Analyzing trace with hash -77971218, now seen corresponding path program 1 times [2020-09-24 23:44:45,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:45,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780440288] [2020-09-24 23:44:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:45,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:45,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:45,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:44:45,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:45,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 23:44:45,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:45,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:45,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 23:44:45,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:44:45,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:45,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:44:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:45,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:45,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:45,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:44:45,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:45,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:44:45,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:45,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:45,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:45,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:45,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:45,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:44:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:45,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:45,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:45,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:44:45,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:45,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 23:44:45,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:45,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 23:44:45,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:44:45,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:45,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:44:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:45,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:45,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:45,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:44:45,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:45,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 23:44:45,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:45,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:45,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 23:44:45,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:45,631 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 23:44:45,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780440288] [2020-09-24 23:44:45,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:44:45,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:44:45,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716397736] [2020-09-24 23:44:45,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:44:45,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:44:45,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:44:45,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:44:45,634 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states. [2020-09-24 23:44:45,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:44:45,853 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2020-09-24 23:44:45,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 23:44:45,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-09-24 23:44:45,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:44:45,856 INFO L225 Difference]: With dead ends: 121 [2020-09-24 23:44:45,856 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 23:44:45,857 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 23:44:45,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 23:44:45,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2020-09-24 23:44:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 23:44:45,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-24 23:44:45,868 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 44 [2020-09-24 23:44:45,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:44:45,869 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-24 23:44:45,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:44:45,869 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-24 23:44:45,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 23:44:45,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:45,871 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] [2020-09-24 23:44:45,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:44:45,872 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:45,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:45,872 INFO L82 PathProgramCache]: Analyzing trace with hash 135010487, now seen corresponding path program 1 times [2020-09-24 23:44:45,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:45,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420955237] [2020-09-24 23:44:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:45,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:46,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:46,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 23:44:46,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:46,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 23:44:46,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 23:44:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:44:46,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:46,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:44:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:46,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:46,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:46,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:44:46,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:46,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:44:46,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:46,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:46,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:44:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:46,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:46,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:46,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 23:44:46,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:46,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 23:44:46,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:46,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 23:44:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:44:46,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:46,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:44:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:46,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:46,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:46,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 23:44:46,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:46,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 23:44:46,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:44:46,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:46,280 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 23:44:46,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420955237] [2020-09-24 23:44:46,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:44:46,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:44:46,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033683899] [2020-09-24 23:44:46,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:44:46,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:44:46,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:44:46,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:44:46,283 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states. [2020-09-24 23:44:46,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:44:46,535 INFO L93 Difference]: Finished difference Result 125 states and 137 transitions. [2020-09-24 23:44:46,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 23:44:46,536 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-09-24 23:44:46,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:44:46,538 INFO L225 Difference]: With dead ends: 125 [2020-09-24 23:44:46,538 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 23:44:46,539 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 23:44:46,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 23:44:46,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2020-09-24 23:44:46,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 23:44:46,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-24 23:44:46,550 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 45 [2020-09-24 23:44:46,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:44:46,551 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-24 23:44:46,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:44:46,551 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-24 23:44:46,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 23:44:46,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:46,552 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] [2020-09-24 23:44:46,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:44:46,553 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:46,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:46,553 INFO L82 PathProgramCache]: Analyzing trace with hash 619089939, now seen corresponding path program 1 times [2020-09-24 23:44:46,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:46,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257347329] [2020-09-24 23:44:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:46,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:46,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:46,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 23:44:46,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:46,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 23:44:46,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:46,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:46,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 23:44:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:44:46,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:46,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:44:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:46,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:46,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:46,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:44:46,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:46,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:44:46,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:46,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:46,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:46,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:46,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:46,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:44:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:46,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:46,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:46,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 23:44:46,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:46,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 23:44:46,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:46,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:46,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 23:44:46,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:44:46,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:46,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:44:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:46,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:46,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:46,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:44:46,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:46,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 23:44:46,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:46,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:46,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:46,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:44:46,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:46,951 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 23:44:46,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257347329] [2020-09-24 23:44:46,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:44:46,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:44:46,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119192034] [2020-09-24 23:44:46,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:44:46,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:44:46,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:44:46,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:44:46,954 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states. [2020-09-24 23:44:47,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:44:47,136 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2020-09-24 23:44:47,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 23:44:47,137 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-09-24 23:44:47,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:44:47,139 INFO L225 Difference]: With dead ends: 121 [2020-09-24 23:44:47,139 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 23:44:47,140 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 23:44:47,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 23:44:47,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2020-09-24 23:44:47,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 23:44:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-24 23:44:47,149 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 46 [2020-09-24 23:44:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:44:47,149 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-24 23:44:47,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:44:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-24 23:44:47,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 23:44:47,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:47,151 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] [2020-09-24 23:44:47,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:44:47,152 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:47,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:47,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1331564627, now seen corresponding path program 1 times [2020-09-24 23:44:47,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:47,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76976014] [2020-09-24 23:44:47,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:44:47,172 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:44:47,172 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:44:47,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:44:47,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:44:47 BoogieIcfgContainer [2020-09-24 23:44:47,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:44:47,204 INFO L168 Benchmark]: Toolchain (without parser) took 5113.85 ms. Allocated memory was 138.9 MB in the beginning and 248.5 MB in the end (delta: 109.6 MB). Free memory was 101.9 MB in the beginning and 167.1 MB in the end (delta: -65.2 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:47,205 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 23:44:47,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.79 ms. Allocated memory is still 138.9 MB. Free memory was 101.3 MB in the beginning and 90.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:47,207 INFO L168 Benchmark]: Boogie Preprocessor took 128.10 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 90.5 MB in the beginning and 177.4 MB in the end (delta: -86.9 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:47,207 INFO L168 Benchmark]: RCFGBuilder took 531.76 ms. Allocated memory is still 200.3 MB. Free memory was 177.4 MB in the beginning and 153.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:47,208 INFO L168 Benchmark]: TraceAbstraction took 4071.85 ms. Allocated memory was 200.3 MB in the beginning and 248.5 MB in the end (delta: 48.2 MB). Free memory was 152.9 MB in the beginning and 167.1 MB in the end (delta: -14.2 MB). Peak memory consumption was 34.0 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:47,212 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 372.79 ms. Allocated memory is still 138.9 MB. Free memory was 101.3 MB in the beginning and 90.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.10 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 90.5 MB in the beginning and 177.4 MB in the end (delta: -86.9 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 531.76 ms. Allocated memory is still 200.3 MB. Free memory was 177.4 MB in the beginning and 153.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4071.85 ms. Allocated memory was 200.3 MB in the beginning and 248.5 MB in the end (delta: 48.2 MB). Free memory was 152.9 MB in the beginning and 167.1 MB in the end (delta: -14.2 MB). Peak memory consumption was 34.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; [L66] CALL, EXPR fmin_float(x, y) [L36] CALL, EXPR __fpclassify_float(x) [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; [L36] RET, EXPR __fpclassify_float(x) [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; [L66] RET, EXPR fmin_float(x, y) [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 441 SDtfs, 89 SDslu, 915 SDs, 0 SdLazy, 611 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred 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, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 17222 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...