/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1231.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:19:35,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:19:35,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:19:35,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:19:35,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:19:35,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:19:35,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:19:35,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:19:35,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:19:35,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:19:35,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:19:35,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:19:35,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:19:35,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:19:35,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:19:35,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:19:35,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:19:35,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:19:35,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:19:35,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:19:35,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:19:35,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:19:35,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:19:35,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:19:35,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:19:35,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:19:35,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:19:35,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:19:35,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:19:35,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:19:35,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:19:35,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:19:35,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:19:35,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:19:35,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:19:35,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:19:35,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:19:35,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:19:35,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:19:35,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:19:35,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:19:35,719 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:19:35,757 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:19:35,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:19:35,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:19:35,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:19:35,760 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:19:35,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:19:35,760 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:19:35,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:19:35,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:19:35,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:19:35,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:19:35,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:19:35,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:19:35,763 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:19:35,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:19:35,763 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:19:35,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:19:35,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:19:35,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:19:35,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:19:35,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:19:35,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:19:35,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:19:35,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:19:35,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:19:35,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:19:35,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:19:35,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:19:35,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:19:35,766 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:19:36,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:19:36,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:19:36,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:19:36,066 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:19:36,067 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:19:36,067 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1231.c [2020-10-14 23:19:36,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18ef4b8b1/a4a2607751074821b2fee5ce710734fc/FLAG55bd54813 [2020-10-14 23:19:36,570 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:19:36,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1231.c [2020-10-14 23:19:36,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18ef4b8b1/a4a2607751074821b2fee5ce710734fc/FLAG55bd54813 [2020-10-14 23:19:36,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18ef4b8b1/a4a2607751074821b2fee5ce710734fc [2020-10-14 23:19:36,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:19:36,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:19:36,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:19:36,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:19:36,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:19:36,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:19:36" (1/1) ... [2020-10-14 23:19:36,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c7bf19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:36, skipping insertion in model container [2020-10-14 23:19:36,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:19:36" (1/1) ... [2020-10-14 23:19:36,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:19:36,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:19:37,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:19:37,186 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:19:37,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:19:37,234 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:19:37,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:37 WrapperNode [2020-10-14 23:19:37,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:19:37,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:19:37,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:19:37,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:19:37,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:37" (1/1) ... [2020-10-14 23:19:37,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:37" (1/1) ... [2020-10-14 23:19:37,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:37" (1/1) ... [2020-10-14 23:19:37,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:37" (1/1) ... [2020-10-14 23:19:37,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:37" (1/1) ... [2020-10-14 23:19:37,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:37" (1/1) ... [2020-10-14 23:19:37,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:37" (1/1) ... [2020-10-14 23:19:37,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:19:37,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:19:37,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:19:37,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:19:37,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:19:37,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:19:37,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:19:37,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-10-14 23:19:37,436 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-10-14 23:19:37,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-14 23:19:37,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-14 23:19:37,436 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:19:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:19:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 23:19:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-10-14 23:19:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:19:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 23:19:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:19:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:19:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-10-14 23:19:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-14 23:19:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-14 23:19:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:19:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:19:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:19:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:19:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 23:19:37,800 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:19:37,800 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-14 23:19:37,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:19:37 BoogieIcfgContainer [2020-10-14 23:19:37,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:19:37,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:19:37,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:19:37,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:19:37,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:19:36" (1/3) ... [2020-10-14 23:19:37,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5987e8a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:19:37, skipping insertion in model container [2020-10-14 23:19:37,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:37" (2/3) ... [2020-10-14 23:19:37,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5987e8a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:19:37, skipping insertion in model container [2020-10-14 23:19:37,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:19:37" (3/3) ... [2020-10-14 23:19:37,813 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2020-10-14 23:19:37,824 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:19:37,830 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-14 23:19:37,845 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-14 23:19:37,871 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:19:37,872 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:19:37,872 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:19:37,872 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:19:37,872 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:19:37,872 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:19:37,872 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:19:37,873 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:19:37,908 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-10-14 23:19:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:19:37,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:37,921 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:19:37,922 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:37,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:37,929 INFO L82 PathProgramCache]: Analyzing trace with hash 780794965, now seen corresponding path program 1 times [2020-10-14 23:19:37,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:37,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878381644] [2020-10-14 23:19:37,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:38,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:38,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:38,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:38,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:38,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:39,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:39,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:19:39,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:19:39,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 875 [2020-10-14 23:19:39,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:39,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:19:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:19:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 23:19:39,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:19:39,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:19:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:39,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:39,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:39,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:39,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:39,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:19:39,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:39,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:39,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:39,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:39,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:19:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:39,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:39,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:39,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:39,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:39,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:19:39,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:39,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:39,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:39,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:39,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:19:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:39,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:39,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:39,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:39,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:39,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:19:39,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:19:39,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 23:19:39,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:39,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:19:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 23:19:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:19:39,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:39,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:19:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:39,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:39,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:39,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:39,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:19:39,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:19:39,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:19:39,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:39,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:39,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:19:39,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:39,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:19:39,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:39,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:19:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:39,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:39,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:39,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:39,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:39,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:19:39,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:39,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:39,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:39,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:19:39,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:39,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:19:39,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878381644] [2020-10-14 23:19:39,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:19:39,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 23:19:39,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148445702] [2020-10-14 23:19:39,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:19:39,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:19:39,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:19:39,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:19:39,248 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 8 states. [2020-10-14 23:19:39,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:19:39,854 INFO L93 Difference]: Finished difference Result 129 states and 180 transitions. [2020-10-14 23:19:39,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:19:39,856 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-14 23:19:39,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:19:39,868 INFO L225 Difference]: With dead ends: 129 [2020-10-14 23:19:39,868 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 23:19:39,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:19:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 23:19:39,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2020-10-14 23:19:39,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 23:19:39,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2020-10-14 23:19:39,927 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 36 [2020-10-14 23:19:39,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:19:39,927 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2020-10-14 23:19:39,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:19:39,927 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2020-10-14 23:19:39,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:19:39,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:39,931 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:19:39,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:19:39,931 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:39,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:39,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1623534211, now seen corresponding path program 1 times [2020-10-14 23:19:39,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:39,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903597606] [2020-10-14 23:19:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:39,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:40,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:40,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:40,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 23:19:40,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:19:40,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 23:19:40,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:40,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:19:40,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 23:19:40,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:19:40,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:40,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:19:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:40,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:40,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:40,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:40,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:40,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:19:40,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:40,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:40,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:40,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:40,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:40,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:40,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:19:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:40,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:40,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:40,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:40,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:40,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:19:40,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:40,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:40,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:40,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:40,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:40,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:40,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 23:19:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:40,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:40,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:40,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:40,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:40,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:19:40,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:40,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:40,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:40,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:40,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:40,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:40,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:19:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:40,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:40,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:40,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:19:40,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:40,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 23:19:40,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:40,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:19:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:19:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:19:40,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:40,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:19:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:40,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:40,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:40,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:19:40,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:40,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:19:40,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:40,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:40,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:19:40,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:19:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:40,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 23:19:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:40,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:40,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:40,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:40,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:40,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:19:40,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:40,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:19:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:40,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 23:19:40,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903597606] [2020-10-14 23:19:40,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:19:40,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:19:40,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294443023] [2020-10-14 23:19:40,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:19:40,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:19:40,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:19:40,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:19:40,257 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand 6 states. [2020-10-14 23:19:40,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:19:40,593 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2020-10-14 23:19:40,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:19:40,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-10-14 23:19:40,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:19:40,595 INFO L225 Difference]: With dead ends: 93 [2020-10-14 23:19:40,596 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 23:19:40,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:19:40,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 23:19:40,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2020-10-14 23:19:40,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 23:19:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2020-10-14 23:19:40,610 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 43 [2020-10-14 23:19:40,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:19:40,611 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2020-10-14 23:19:40,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:19:40,611 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2020-10-14 23:19:40,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:19:40,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:40,613 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:19:40,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:19:40,614 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:40,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:40,614 INFO L82 PathProgramCache]: Analyzing trace with hash 332653112, now seen corresponding path program 1 times [2020-10-14 23:19:40,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:40,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179961179] [2020-10-14 23:19:40,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:40,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:40,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:40,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:40,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 23:19:40,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:19:40,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 23:19:40,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:40,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:40,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:19:40,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 23:19:40,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:19:40,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:40,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:19:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:40,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:40,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:40,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:40,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:40,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:19:40,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:40,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:40,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:40,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:40,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:40,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:40,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:19:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:40,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:40,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:40,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:40,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:40,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:19:40,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:40,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:40,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:40,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:40,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 23:19:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:40,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:40,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:40,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:40,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:40,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:19:40,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:40,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:40,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:40,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:40,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:40,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:40,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:19:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:40,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:40,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:40,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:19:40,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:40,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:19:40,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:40,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:40,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:19:40,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:19:40,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:19:40,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:40,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:19:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:40,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:40,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:40,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 23:19:40,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 23:19:40,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:40,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:19:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:19:40,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:40,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 23:19:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:40,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:40,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:40,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:40,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:40,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:19:40,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:40,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:40,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:40,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:19:40,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:40,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:40,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 23:19:40,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179961179] [2020-10-14 23:19:40,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:19:40,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:19:40,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525615917] [2020-10-14 23:19:40,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:19:40,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:19:40,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:19:40,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:19:40,909 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand 6 states. [2020-10-14 23:19:41,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:19:41,215 INFO L93 Difference]: Finished difference Result 97 states and 124 transitions. [2020-10-14 23:19:41,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:19:41,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-14 23:19:41,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:19:41,218 INFO L225 Difference]: With dead ends: 97 [2020-10-14 23:19:41,218 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 23:19:41,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:19:41,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 23:19:41,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2020-10-14 23:19:41,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 23:19:41,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2020-10-14 23:19:41,230 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 44 [2020-10-14 23:19:41,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:19:41,231 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2020-10-14 23:19:41,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:19:41,231 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2020-10-14 23:19:41,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:19:41,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:41,233 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:19:41,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:19:41,235 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:41,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:41,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1197218727, now seen corresponding path program 1 times [2020-10-14 23:19:41,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:41,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980171266] [2020-10-14 23:19:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:41,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:41,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:41,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:41,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:19:41,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:19:41,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 23:19:41,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:41,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:19:41,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 23:19:41,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:19:41,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:19:41,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:19:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:41,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:41,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:41,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:41,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:41,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:19:41,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:41,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:41,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:41,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:41,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:19:41,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:19:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:41,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:41,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:41,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:41,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:41,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:19:41,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:41,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:41,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:41,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:41,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:41,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:41,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 23:19:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:41,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:41,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:41,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:41,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:41,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:19:41,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:41,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:41,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:41,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:41,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:41,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:41,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:19:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:41,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:41,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:41,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:19:41,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:41,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 23:19:41,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:41,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:41,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:19:41,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:19:41,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:19:41,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:41,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:19:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:41,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:41,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:41,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 23:19:41,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:41,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 23:19:41,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:41,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:41,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:19:41,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:41,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:19:41,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:41,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 23:19:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:41,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:41,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:41,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:41,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:41,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:19:41,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:41,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:41,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:41,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:19:41,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:41,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:41,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 23:19:41,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980171266] [2020-10-14 23:19:41,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:19:41,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:19:41,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804660021] [2020-10-14 23:19:41,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:19:41,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:19:41,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:19:41,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:19:41,611 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand 6 states. [2020-10-14 23:19:41,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:19:41,921 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2020-10-14 23:19:41,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:19:41,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-14 23:19:41,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:19:41,924 INFO L225 Difference]: With dead ends: 93 [2020-10-14 23:19:41,924 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 23:19:41,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:19:41,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 23:19:41,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2020-10-14 23:19:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 23:19:41,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2020-10-14 23:19:41,934 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 45 [2020-10-14 23:19:41,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:19:41,934 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2020-10-14 23:19:41,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:19:41,935 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2020-10-14 23:19:41,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:19:41,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:41,937 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:19:41,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:19:41,937 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:41,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:41,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1707752904, now seen corresponding path program 1 times [2020-10-14 23:19:41,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:41,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978931404] [2020-10-14 23:19:41,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:41,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:41,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:41,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:19:41,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:41,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 23:19:41,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:41,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:41,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:19:41,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 23:19:41,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:19:41,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:42,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:19:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:42,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:42,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:42,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:42,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:42,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:19:42,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:42,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:42,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:42,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:42,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:42,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:42,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:19:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:42,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:42,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:42,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:42,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:42,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:19:42,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:42,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:42,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:42,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:42,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:42,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 23:19:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:42,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:42,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:42,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:42,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:42,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:19:42,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:42,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:42,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:42,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:42,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:42,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:42,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:19:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:42,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:42,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:42,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:19:42,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:42,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:19:42,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:42,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:42,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:42,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:19:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:42,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:42,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:42,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 23:19:42,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:42,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:19:42,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:42,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:42,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:42,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:42,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:42,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:42,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 23:19:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:42,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:42,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:42,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:42,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:42,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:19:42,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:42,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:42,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 23:19:42,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978931404] [2020-10-14 23:19:42,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:19:42,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:19:42,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327678770] [2020-10-14 23:19:42,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:19:42,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:19:42,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:19:42,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:19:42,115 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand 5 states. [2020-10-14 23:19:42,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:19:42,363 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2020-10-14 23:19:42,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:19:42,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-14 23:19:42,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:19:42,366 INFO L225 Difference]: With dead ends: 70 [2020-10-14 23:19:42,366 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 23:19:42,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:19:42,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 23:19:42,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-14 23:19:42,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-14 23:19:42,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2020-10-14 23:19:42,383 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 45 [2020-10-14 23:19:42,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:19:42,384 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2020-10-14 23:19:42,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:19:42,385 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2020-10-14 23:19:42,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:19:42,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:42,387 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:19:42,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:19:42,388 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:42,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:42,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1746316374, now seen corresponding path program 1 times [2020-10-14 23:19:42,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:42,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324661239] [2020-10-14 23:19:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:19:42,408 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:19:42,409 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:19:42,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:19:42,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:19:42 BoogieIcfgContainer [2020-10-14 23:19:42,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:19:42,439 INFO L168 Benchmark]: Toolchain (without parser) took 5480.26 ms. Allocated memory was 147.3 MB in the beginning and 278.9 MB in the end (delta: 131.6 MB). Free memory was 102.1 MB in the beginning and 219.0 MB in the end (delta: -116.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:42,441 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 23:19:42,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.03 ms. Allocated memory is still 147.3 MB. Free memory was 102.1 MB in the beginning and 90.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:42,448 INFO L168 Benchmark]: Boogie Preprocessor took 126.78 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 90.7 MB in the beginning and 180.2 MB in the end (delta: -89.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:42,448 INFO L168 Benchmark]: RCFGBuilder took 442.17 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 155.5 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:42,449 INFO L168 Benchmark]: TraceAbstraction took 4630.12 ms. Allocated memory was 202.9 MB in the beginning and 278.9 MB in the end (delta: 76.0 MB). Free memory was 154.6 MB in the beginning and 219.0 MB in the end (delta: -64.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:42,462 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.03 ms. Allocated memory is still 147.3 MB. Free memory was 102.1 MB in the beginning and 90.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.78 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 90.7 MB in the beginning and 180.2 MB in the end (delta: -89.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 442.17 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 155.5 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4630.12 ms. Allocated memory was 202.9 MB in the beginning and 278.9 MB in the end (delta: 76.0 MB). Free memory was 154.6 MB in the beginning and 219.0 MB in the end (delta: -64.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 75]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 74. Possible FailurePath: [L66] float x = __VERIFIER_nondet_float(); [L67] float y = __VERIFIER_nondet_float(); [L68] CALL, EXPR isnan_float(x) [L57] return x != x; [L68] RET, EXPR isnan_float(x) [L68] EXPR isnan_float(x) && !isnan_float(y) [L68] CALL, EXPR isnan_float(y) [L57] return x != x; [L68] RET, EXPR isnan_float(y) [L68] EXPR isnan_float(x) && !isnan_float(y) [L68-L69] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L68-L69] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L71] CALL, EXPR fmin_float(x, y) [L36] CALL, EXPR __fpclassify_float(x) [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; [L36] RET, EXPR __fpclassify_float(x) [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; [L71] RET, EXPR fmin_float(x, y) [L71] float res = fmin_float(x, y); [L74] CALL, EXPR isnan_float(x) [L57] return x != x; [L74] RET, EXPR isnan_float(x) [L74] EXPR isnan_float(x) && !isnan_float(y) [L74] CALL, EXPR isnan_float(y) [L57] return x != x; [L74] RET, EXPR isnan_float(y) [L74] EXPR isnan_float(x) && !isnan_float(y) [L74] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L75] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 72 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.5s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 339 SDtfs, 395 SDslu, 190 SDs, 0 SdLazy, 1071 SolverSat, 197 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 23 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 263 NumberOfCodeBlocks, 263 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 17035 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 39/39 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...