/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:17:20,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:17:20,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:17:20,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:17:20,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:17:20,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:17:20,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:17:20,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:17:20,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:17:20,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:17:20,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:17:20,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:17:20,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:17:20,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:17:20,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:17:20,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:17:20,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:17:20,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:17:20,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:17:20,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:17:20,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:17:20,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:17:20,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:17:20,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:17:20,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:17:20,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:17:20,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:17:20,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:17:20,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:17:20,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:17:20,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:17:20,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:17:20,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:17:20,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:17:20,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:17:20,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:17:20,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:17:20,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:17:20,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:17:20,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:17:20,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:17:20,501 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 19:17:20,545 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:17:20,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:17:20,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:17:20,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:17:20,548 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:17:20,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:17:20,549 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:17:20,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:17:20,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:17:20,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:17:20,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:17:20,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:17:20,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:17:20,552 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:17:20,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:17:20,552 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:17:20,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:17:20,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:17:20,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:17:20,553 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:17:20,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:17:20,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:17:20,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:17:20,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:17:20,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:17:20,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:17:20,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:17:20,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:17:20,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:17:20,555 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 19:17:21,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:17:21,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:17:21,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:17:21,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:17:21,137 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:17:21,138 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c [2020-09-24 19:17:21,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e42bae6de/af916c880c9d4d8c9eebb948332e2c5d/FLAG4fe6f1587 [2020-09-24 19:17:21,800 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:17:21,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c [2020-09-24 19:17:21,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e42bae6de/af916c880c9d4d8c9eebb948332e2c5d/FLAG4fe6f1587 [2020-09-24 19:17:22,135 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e42bae6de/af916c880c9d4d8c9eebb948332e2c5d [2020-09-24 19:17:22,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:17:22,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:17:22,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:22,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:17:22,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:17:22,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:22" (1/1) ... [2020-09-24 19:17:22,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f7f464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:22, skipping insertion in model container [2020-09-24 19:17:22,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:22" (1/1) ... [2020-09-24 19:17:22,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:17:22,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:17:22,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:22,459 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:17:22,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:22,621 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:17:22,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:22 WrapperNode [2020-09-24 19:17:22,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:22,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:17:22,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:17:22,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:17:22,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:22" (1/1) ... [2020-09-24 19:17:22,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:22" (1/1) ... [2020-09-24 19:17:22,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:22" (1/1) ... [2020-09-24 19:17:22,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:22" (1/1) ... [2020-09-24 19:17:22,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:22" (1/1) ... [2020-09-24 19:17:22,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:22" (1/1) ... [2020-09-24 19:17:22,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:22" (1/1) ... [2020-09-24 19:17:22,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:17:22,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:17:22,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:17:22,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:17:22,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:22" (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 19:17:22,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:17:22,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:17:22,761 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 19:17:22,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-24 19:17:22,762 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-09-24 19:17:22,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-24 19:17:22,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:17:22,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:17:22,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 19:17:22,762 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 19:17:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-24 19:17:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:17:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 19:17:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:17:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:17:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-09-24 19:17:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-24 19:17:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:17:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:17:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:17:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 19:17:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:17:23,194 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:17:23,195 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 19:17:23,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:23 BoogieIcfgContainer [2020-09-24 19:17:23,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:17:23,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:17:23,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:17:23,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:17:23,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:17:22" (1/3) ... [2020-09-24 19:17:23,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d26667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:23, skipping insertion in model container [2020-09-24 19:17:23,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:22" (2/3) ... [2020-09-24 19:17:23,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d26667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:23, skipping insertion in model container [2020-09-24 19:17:23,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:23" (3/3) ... [2020-09-24 19:17:23,211 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2020-09-24 19:17:23,225 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:17:23,248 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:17:23,278 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:17:23,308 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:17:23,309 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:17:23,309 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:17:23,309 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:17:23,309 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:17:23,309 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:17:23,309 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:17:23,309 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:17:23,336 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2020-09-24 19:17:23,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 19:17:23,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:23,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:23,348 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:23,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:23,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1987914920, now seen corresponding path program 1 times [2020-09-24 19:17:23,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:23,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884247841] [2020-09-24 19:17:23,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:23,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:23,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:23,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:23,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 19:17:23,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:17:23,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-09-24 19:17:23,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:23,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:23,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 19:17:23,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:23,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 19:17:24,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:24,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:24,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:24,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:24,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:24,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:17:24,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:24,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:24,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:24,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:24,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:24,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:24,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:17:24,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:17:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 19:17:24,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:17:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:24,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:24,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:24,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:24,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:24,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 19:17:24,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:24,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:17:24,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:24,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:24,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 19:17:24,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:24,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:24,181 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 19:17:24,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884247841] [2020-09-24 19:17:24,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:24,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:17:24,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105247448] [2020-09-24 19:17:24,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:17:24,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:24,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:17:24,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:17:24,214 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 4 states. [2020-09-24 19:17:24,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:24,517 INFO L93 Difference]: Finished difference Result 176 states and 204 transitions. [2020-09-24 19:17:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:17:24,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-09-24 19:17:24,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:24,534 INFO L225 Difference]: With dead ends: 176 [2020-09-24 19:17:24,534 INFO L226 Difference]: Without dead ends: 87 [2020-09-24 19:17:24,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:17:24,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-24 19:17:24,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-24 19:17:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-24 19:17:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-09-24 19:17:24,603 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 35 [2020-09-24 19:17:24,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:24,604 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-09-24 19:17:24,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:17:24,604 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-09-24 19:17:24,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 19:17:24,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:24,608 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 19:17:24,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:17:24,608 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:24,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:24,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1530124146, now seen corresponding path program 1 times [2020-09-24 19:17:24,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:24,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144775266] [2020-09-24 19:17:24,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:24,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:24,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:24,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 19:17:24,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:24,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-24 19:17:24,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:24,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:24,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 19:17:24,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:24,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:24,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:24,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:24,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:24,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:24,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:24,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:17:24,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:24,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:24,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:24,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:24,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:24,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:24,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:25,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:25,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:17:25,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:25,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 19:17:25,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:25,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:25,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 19:17:25,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:25,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:25,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:25,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:25,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:25,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 19:17:25,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:25,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 19:17:25,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:25,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:25,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:25,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:17:25,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:25,214 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 19:17:25,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144775266] [2020-09-24 19:17:25,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:25,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:25,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892345620] [2020-09-24 19:17:25,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:25,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:25,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:25,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:25,219 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 6 states. [2020-09-24 19:17:25,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:25,484 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-09-24 19:17:25,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:25,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-24 19:17:25,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:25,490 INFO L225 Difference]: With dead ends: 123 [2020-09-24 19:17:25,490 INFO L226 Difference]: Without dead ends: 92 [2020-09-24 19:17:25,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:25,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-24 19:17:25,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-09-24 19:17:25,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 19:17:25,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-24 19:17:25,509 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 49 [2020-09-24 19:17:25,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:25,509 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-24 19:17:25,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:25,510 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-24 19:17:25,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 19:17:25,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:25,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:25,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:17:25,512 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:25,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:25,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1188811885, now seen corresponding path program 1 times [2020-09-24 19:17:25,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:25,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489630092] [2020-09-24 19:17:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:25,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:25,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:25,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 19:17:25,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:25,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-24 19:17:25,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:25,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:25,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:17:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:25,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:25,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:25,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:25,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:25,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:25,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:25,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:17:25,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:25,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:25,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:25,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:25,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:25,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 19:17:25,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:25,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 19:17:25,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:25,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 19:17:25,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:25,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:25,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:25,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:26,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:26,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:17:26,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:26,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 19:17:26,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:26,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:26,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:26,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:17:26,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:26,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489630092] [2020-09-24 19:17:26,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:26,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:26,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837169121] [2020-09-24 19:17:26,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:26,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:26,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:26,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:26,057 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-24 19:17:26,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:26,336 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-24 19:17:26,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:26,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-09-24 19:17:26,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:26,339 INFO L225 Difference]: With dead ends: 127 [2020-09-24 19:17:26,339 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 19:17:26,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:26,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 19:17:26,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-24 19:17:26,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 19:17:26,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-24 19:17:26,351 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 50 [2020-09-24 19:17:26,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:26,352 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-24 19:17:26,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:26,352 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-24 19:17:26,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 19:17:26,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:26,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:26,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:17:26,355 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:26,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:26,355 INFO L82 PathProgramCache]: Analyzing trace with hash 2048064115, now seen corresponding path program 1 times [2020-09-24 19:17:26,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:26,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923190621] [2020-09-24 19:17:26,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:26,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:26,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:26,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 19:17:26,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:26,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-24 19:17:26,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 19:17:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:26,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:26,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:26,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:26,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:26,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:26,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:26,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:17:26,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:26,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:26,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:26,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:26,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:26,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:26,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:26,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:26,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 19:17:26,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:26,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 19:17:26,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 19:17:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:26,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:26,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:26,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:26,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 19:17:26,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:26,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 19:17:26,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:26,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:26,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:26,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:17:26,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:26,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923190621] [2020-09-24 19:17:26,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:26,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:26,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442811320] [2020-09-24 19:17:26,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:26,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:26,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:26,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:26,803 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-24 19:17:27,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:27,086 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-24 19:17:27,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:27,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-24 19:17:27,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:27,094 INFO L225 Difference]: With dead ends: 127 [2020-09-24 19:17:27,094 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 19:17:27,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:27,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 19:17:27,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-24 19:17:27,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 19:17:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-24 19:17:27,120 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 51 [2020-09-24 19:17:27,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:27,120 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-24 19:17:27,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:27,121 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-24 19:17:27,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 19:17:27,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:27,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:27,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:17:27,126 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:27,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:27,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1091693362, now seen corresponding path program 1 times [2020-09-24 19:17:27,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:27,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830777679] [2020-09-24 19:17:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:27,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:27,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:27,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:17:27,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-24 19:17:27,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:17:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:27,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:27,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:27,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:27,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:27,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:27,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:17:27,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:27,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:27,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:27,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:27,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:27,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 19:17:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:27,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:27,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:27,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 19:17:27,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:27,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-24 19:17:27,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:27,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 19:17:27,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:27,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:27,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:27,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:27,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:27,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 19:17:27,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:27,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 19:17:27,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:17:27,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:27,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830777679] [2020-09-24 19:17:27,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:27,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:27,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237174112] [2020-09-24 19:17:27,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:27,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:27,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:27,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:27,609 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-24 19:17:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:27,833 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-24 19:17:27,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:27,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-24 19:17:27,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:27,835 INFO L225 Difference]: With dead ends: 127 [2020-09-24 19:17:27,835 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 19:17:27,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:27,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 19:17:27,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-24 19:17:27,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 19:17:27,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-24 19:17:27,858 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 52 [2020-09-24 19:17:27,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:27,858 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-24 19:17:27,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:27,858 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-24 19:17:27,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 19:17:27,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:27,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:27,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:17:27,862 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:27,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:27,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1804168050, now seen corresponding path program 1 times [2020-09-24 19:17:27,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:27,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299580400] [2020-09-24 19:17:27,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:17:27,888 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:17:27,889 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:17:27,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:17:27,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:17:27 BoogieIcfgContainer [2020-09-24 19:17:27,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:17:27,939 INFO L168 Benchmark]: Toolchain (without parser) took 5786.84 ms. Allocated memory was 138.4 MB in the beginning and 249.6 MB in the end (delta: 111.1 MB). Free memory was 99.9 MB in the beginning and 131.8 MB in the end (delta: -31.9 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:27,941 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:17:27,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.75 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 99.3 MB in the beginning and 178.1 MB in the end (delta: -78.8 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:27,949 INFO L168 Benchmark]: Boogie Preprocessor took 60.32 ms. Allocated memory is still 200.8 MB. Free memory was 178.1 MB in the beginning and 176.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:27,949 INFO L168 Benchmark]: RCFGBuilder took 517.38 ms. Allocated memory is still 200.8 MB. Free memory was 176.2 MB in the beginning and 151.5 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:27,950 INFO L168 Benchmark]: TraceAbstraction took 4731.47 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 150.8 MB in the beginning and 131.8 MB in the end (delta: 19.0 MB). Peak memory consumption was 67.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:27,964 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 138.4 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 467.75 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 99.3 MB in the beginning and 178.1 MB in the end (delta: -78.8 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.32 ms. Allocated memory is still 200.8 MB. Free memory was 178.1 MB in the beginning and 176.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 517.38 ms. Allocated memory is still 200.8 MB. Free memory was 176.2 MB in the beginning and 151.5 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4731.47 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 150.8 MB in the beginning and 131.8 MB in the end (delta: 19.0 MB). Peak memory consumption was 67.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 74. Possible FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; [L76] CALL, EXPR fmin_double(x, y) [L46] CALL, EXPR __fpclassify_double(x) [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; [L46] RET, EXPR __fpclassify_double(x) [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; [L76] RET, EXPR fmin_double(x, y) [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 471 SDtfs, 99 SDslu, 970 SDs, 0 SdLazy, 655 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 289 NumberOfCodeBlocks, 289 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 232 ConstructedInterpolants, 0 QuantifiedInterpolants, 20602 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...