/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/float_req_bl_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:17:42,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:17:42,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:17:42,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:17:42,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:17:42,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:17:42,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:17:42,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:17:42,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:17:42,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:17:42,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:17:42,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:17:42,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:17:42,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:17:42,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:17:42,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:17:42,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:17:42,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:17:42,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:17:42,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:17:42,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:17:42,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:17:42,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:17:42,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:17:42,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:17:42,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:17:42,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:17:42,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:17:42,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:17:42,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:17:42,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:17:42,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:17:42,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:17:42,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:17:42,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:17:42,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:17:42,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:17:42,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:17:42,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:17:42,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:17:42,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:17:42,536 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 19:17:42,585 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:17:42,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:17:42,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:17:42,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:17:42,589 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:17:42,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:17:42,589 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:17:42,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:17:42,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:17:42,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:17:42,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:17:42,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:17:42,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:17:42,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:17:42,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:17:42,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:17:42,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:17:42,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:17:42,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:17:42,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:17:42,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:17:42,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:17:42,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:17:42,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:17:42,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:17:42,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:17:42,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:17:42,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:17:42,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:17:42,595 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 19:17:43,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:17:43,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:17:43,056 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:17:43,058 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:17:43,059 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:17:43,060 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2020-09-24 19:17:43,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/058c78bf1/647b8224c42c4562b16f76887102f40a/FLAG56541533a [2020-09-24 19:17:43,705 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:17:43,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2020-09-24 19:17:43,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/058c78bf1/647b8224c42c4562b16f76887102f40a/FLAG56541533a [2020-09-24 19:17:44,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/058c78bf1/647b8224c42c4562b16f76887102f40a [2020-09-24 19:17:44,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:17:44,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:17:44,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:44,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:17:44,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:17:44,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:44" (1/1) ... [2020-09-24 19:17:44,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41395291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:44, skipping insertion in model container [2020-09-24 19:17:44,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:44" (1/1) ... [2020-09-24 19:17:44,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:17:44,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:17:44,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:44,359 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:17:44,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:44,410 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:17:44,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:44 WrapperNode [2020-09-24 19:17:44,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:44,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:17:44,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:17:44,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:17:44,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:44" (1/1) ... [2020-09-24 19:17:44,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:44" (1/1) ... [2020-09-24 19:17:44,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:44" (1/1) ... [2020-09-24 19:17:44,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:44" (1/1) ... [2020-09-24 19:17:44,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:44" (1/1) ... [2020-09-24 19:17:44,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:44" (1/1) ... [2020-09-24 19:17:44,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:44" (1/1) ... [2020-09-24 19:17:44,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:17:44,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:17:44,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:17:44,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:17:44,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:44" (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 19:17:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:17:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:17:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-09-24 19:17:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-09-24 19:17:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-09-24 19:17:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:17:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:17:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-09-24 19:17:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:17:44,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 19:17:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:17:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:17:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-09-24 19:17:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-09-24 19:17:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:17:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:17:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:17:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 19:17:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:17:45,033 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:17:45,033 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 19:17:45,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:45 BoogieIcfgContainer [2020-09-24 19:17:45,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:17:45,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:17:45,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:17:45,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:17:45,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:17:44" (1/3) ... [2020-09-24 19:17:45,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@277a0302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:45, skipping insertion in model container [2020-09-24 19:17:45,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:44" (2/3) ... [2020-09-24 19:17:45,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@277a0302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:45, skipping insertion in model container [2020-09-24 19:17:45,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:45" (3/3) ... [2020-09-24 19:17:45,049 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2020-09-24 19:17:45,058 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:17:45,068 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:17:45,089 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:17:45,120 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:17:45,120 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:17:45,120 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:17:45,120 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:17:45,121 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:17:45,121 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:17:45,121 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:17:45,121 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:17:45,143 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-09-24 19:17:45,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 19:17:45,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:45,153 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] [2020-09-24 19:17:45,154 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:45,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:45,162 INFO L82 PathProgramCache]: Analyzing trace with hash 337584138, now seen corresponding path program 1 times [2020-09-24 19:17:45,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:45,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436582477] [2020-09-24 19:17:45,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:45,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:45,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:45,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:45,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 19:17:45,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:17:45,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-09-24 19:17:45,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:45,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:45,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:17:45,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:45,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:17:45,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:45,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:45,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:45,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:45,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:45,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:17:45,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:45,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:45,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:45,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:45,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:45,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:45,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:17:45,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:17:45,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:17:45,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 19:17:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:45,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:45,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:45,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:45,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:45,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:17:45,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:45,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:17:45,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:45,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:45,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 19:17:45,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:45,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:45,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:17:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:45,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:45,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:45,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:17:45,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:45,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:17:45,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:45,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:45,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:17:45,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:45,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:45,999 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 19:17:46,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436582477] [2020-09-24 19:17:46,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:46,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:17:46,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176536662] [2020-09-24 19:17:46,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:17:46,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:46,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:17:46,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:17:46,032 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-09-24 19:17:46,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:46,272 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2020-09-24 19:17:46,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:17:46,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-24 19:17:46,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:46,292 INFO L225 Difference]: With dead ends: 132 [2020-09-24 19:17:46,292 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 19:17:46,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 19:17:46,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 19:17:46,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-24 19:17:46,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 19:17:46,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-09-24 19:17:46,399 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 37 [2020-09-24 19:17:46,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:46,413 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-09-24 19:17:46,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:17:46,414 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-09-24 19:17:46,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 19:17:46,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:46,417 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 19:17:46,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:17:46,418 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:46,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:46,419 INFO L82 PathProgramCache]: Analyzing trace with hash -356550436, now seen corresponding path program 1 times [2020-09-24 19:17:46,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:46,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348623571] [2020-09-24 19:17:46,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:46,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:46,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:46,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 19:17:46,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:46,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-24 19:17:46,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:46,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 19:17:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:46,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:46,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:46,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:46,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:46,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:46,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:17:46,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:46,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:46,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:46,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:46,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:46,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:46,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:17:46,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:46,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 19:17:46,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:46,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:17:46,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:46,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:46,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:46,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:46,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:46,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:17:46,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:46,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 19:17:46,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:46,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:46,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:46,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:17:46,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:46,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 19:17:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:46,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:46,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:46,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:17:46,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:46,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:17:46,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:46,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:46,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:17:46,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:46,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:46,908 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 19:17:46,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348623571] [2020-09-24 19:17:46,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:46,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:46,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045000917] [2020-09-24 19:17:46,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:46,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:46,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:46,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:46,912 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 6 states. [2020-09-24 19:17:47,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:47,123 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-24 19:17:47,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:47,124 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-09-24 19:17:47,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:47,128 INFO L225 Difference]: With dead ends: 87 [2020-09-24 19:17:47,128 INFO L226 Difference]: Without dead ends: 71 [2020-09-24 19:17:47,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:47,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-24 19:17:47,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-09-24 19:17:47,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 19:17:47,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-24 19:17:47,145 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 46 [2020-09-24 19:17:47,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:47,145 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-24 19:17:47,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:47,146 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-24 19:17:47,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 19:17:47,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:47,148 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] [2020-09-24 19:17:47,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:17:47,148 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:47,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:47,149 INFO L82 PathProgramCache]: Analyzing trace with hash 9988108, now seen corresponding path program 1 times [2020-09-24 19:17:47,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:47,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887192556] [2020-09-24 19:17:47,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:47,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:47,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:47,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 19:17:47,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:47,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 19:17:47,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 19:17:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:47,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:47,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:47,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:47,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:47,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:47,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:47,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:17:47,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:47,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:47,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:47,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:47,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:47,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:47,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:17:47,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:47,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 19:17:47,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 19:17:47,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:47,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:17:47,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:47,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:47,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:47,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 19:17:47,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:47,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 19:17:47,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:47,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:47,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:47,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 19:17:47,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:47,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-24 19:17:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:47,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:47,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:47,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:17:47,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:47,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:17:47,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:17:47,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:47,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:47,615 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 19:17:47,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887192556] [2020-09-24 19:17:47,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:47,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:47,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071623710] [2020-09-24 19:17:47,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:47,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:47,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:47,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:47,620 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-24 19:17:47,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:47,837 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-09-24 19:17:47,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:47,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-09-24 19:17:47,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:47,839 INFO L225 Difference]: With dead ends: 91 [2020-09-24 19:17:47,839 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 19:17:47,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:47,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 19:17:47,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2020-09-24 19:17:47,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 19:17:47,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-24 19:17:47,851 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 47 [2020-09-24 19:17:47,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:47,851 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-24 19:17:47,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:47,852 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-24 19:17:47,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 19:17:47,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:47,854 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] [2020-09-24 19:17:47,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:17:47,854 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:47,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:47,854 INFO L82 PathProgramCache]: Analyzing trace with hash 738627255, now seen corresponding path program 1 times [2020-09-24 19:17:47,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:47,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191569158] [2020-09-24 19:17:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:47,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:47,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:47,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 19:17:47,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:47,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 19:17:47,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:47,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:47,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 19:17:47,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:47,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:48,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:48,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:48,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:48,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:48,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:48,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:17:48,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:48,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:48,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:48,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:48,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:48,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 19:17:48,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:48,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 19:17:48,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:17:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:48,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:48,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:48,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:48,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:17:48,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:48,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 19:17:48,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:48,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:17:48,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:48,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-24 19:17:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:48,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:48,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:48,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:17:48,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:48,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:17:48,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:48,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:48,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:17:48,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:48,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:48,243 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 19:17:48,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191569158] [2020-09-24 19:17:48,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:48,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:48,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226391944] [2020-09-24 19:17:48,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:48,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:48,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:48,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:48,246 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-24 19:17:48,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:48,421 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-09-24 19:17:48,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:48,422 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-09-24 19:17:48,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:48,424 INFO L225 Difference]: With dead ends: 95 [2020-09-24 19:17:48,424 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 19:17:48,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:48,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 19:17:48,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2020-09-24 19:17:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 19:17:48,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-24 19:17:48,434 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 48 [2020-09-24 19:17:48,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:48,435 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-24 19:17:48,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:48,435 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-24 19:17:48,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 19:17:48,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:48,437 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 19:17:48,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:17:48,437 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:48,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:48,438 INFO L82 PathProgramCache]: Analyzing trace with hash -192516793, now seen corresponding path program 1 times [2020-09-24 19:17:48,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:48,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559472630] [2020-09-24 19:17:48,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:48,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:48,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:48,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 19:17:48,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:48,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 19:17:48,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:48,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:48,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 19:17:48,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:48,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:48,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:48,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:48,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:48,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:48,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:48,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:17:48,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:48,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:48,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:48,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:48,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:48,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 19:17:48,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:48,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 19:17:48,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 19:17:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:48,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:48,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:48,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:48,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:48,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:17:48,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:48,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 19:17:48,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:48,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:48,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:48,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:17:48,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:48,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 19:17:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:48,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:48,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:48,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:17:48,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:48,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:17:48,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:48,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:17:48,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:48,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:48,846 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 19:17:48,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559472630] [2020-09-24 19:17:48,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:48,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:48,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915354389] [2020-09-24 19:17:48,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:48,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:48,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:48,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:48,848 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-24 19:17:49,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:49,014 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-09-24 19:17:49,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:49,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-24 19:17:49,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:49,016 INFO L225 Difference]: With dead ends: 91 [2020-09-24 19:17:49,016 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 19:17:49,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:49,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 19:17:49,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2020-09-24 19:17:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 19:17:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-24 19:17:49,025 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 49 [2020-09-24 19:17:49,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:49,026 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-24 19:17:49,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:49,026 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-24 19:17:49,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 19:17:49,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:49,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:49,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:17:49,028 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:49,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:49,028 INFO L82 PathProgramCache]: Analyzing trace with hash -587463417, now seen corresponding path program 1 times [2020-09-24 19:17:49,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:49,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412803074] [2020-09-24 19:17:49,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:17:49,046 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:17:49,046 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:17:49,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:17:49,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:17:49 BoogieIcfgContainer [2020-09-24 19:17:49,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:17:49,078 INFO L168 Benchmark]: Toolchain (without parser) took 5015.15 ms. Allocated memory was 140.5 MB in the beginning and 244.3 MB in the end (delta: 103.8 MB). Free memory was 103.9 MB in the beginning and 157.7 MB in the end (delta: -53.8 MB). Peak memory consumption was 50.0 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:49,079 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:17:49,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.74 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 92.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:49,081 INFO L168 Benchmark]: Boogie Preprocessor took 129.95 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.6 MB in the beginning and 181.3 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:49,082 INFO L168 Benchmark]: RCFGBuilder took 497.79 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 160.4 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:49,083 INFO L168 Benchmark]: TraceAbstraction took 4033.97 ms. Allocated memory was 203.4 MB in the beginning and 244.3 MB in the end (delta: 40.9 MB). Free memory was 159.8 MB in the beginning and 157.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:49,087 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 344.74 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 92.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.95 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.6 MB in the beginning and 181.3 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 497.79 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 160.4 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4033.97 ms. Allocated memory was 203.4 MB in the beginning and 244.3 MB in the end (delta: 40.9 MB). Free memory was 159.8 MB in the beginning and 157.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 55. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L56] CALL, EXPR fmin_float(x, y) [L35] CALL, EXPR __fpclassify_float(x) [L12] __uint32_t w; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L31] return 0; [L35] RET, EXPR __fpclassify_float(x) [L35] COND TRUE __fpclassify_float(x) == 0 [L36] return y; [L56] RET, EXPR fmin_float(x, y) [L56] float res = fmin_float(x, y); [L58] CALL, EXPR isnan_float(res) [L44] return x != x; [L58] RET, EXPR isnan_float(res) [L58] COND TRUE !isnan_float(res) [L59] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 365 SDtfs, 99 SDslu, 716 SDs, 0 SdLazy, 505 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 276 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 19124 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...