/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:52:04,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:52:04,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:52:04,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:52:04,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:52:04,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:52:04,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:52:04,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:52:04,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:52:04,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:52:04,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:52:04,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:52:04,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:52:04,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:52:04,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:52:04,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:52:04,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:52:04,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:52:04,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:52:04,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:52:04,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:52:04,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:52:04,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:52:04,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:52:04,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:52:04,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:52:04,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:52:04,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:52:04,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:52:04,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:52:04,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:52:04,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:52:04,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:52:04,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:52:04,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:52:04,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:52:04,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:52:04,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:52:04,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:52:04,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:52:04,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:52:04,876 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:52:04,920 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:52:04,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:52:04,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:52:04,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:52:04,923 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:52:04,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:52:04,923 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:52:04,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:52:04,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:52:04,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:52:04,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:52:04,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:52:04,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:52:04,926 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:52:04,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:52:04,926 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:52:04,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:52:04,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:52:04,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:52:04,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:52:04,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:52:04,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:52:04,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:52:04,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:52:04,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:52:04,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:52:04,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:52:04,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:52:04,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:52:04,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:52:05,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:52:05,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:52:05,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:52:05,474 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:52:05,474 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:52:05,475 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-25 08:52:05,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3cd497985/8740fd686a8a43a6a5d62e3c622b985a/FLAG1d805af20 [2020-09-25 08:52:06,123 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:52:06,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-25 08:52:06,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3cd497985/8740fd686a8a43a6a5d62e3c622b985a/FLAG1d805af20 [2020-09-25 08:52:06,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3cd497985/8740fd686a8a43a6a5d62e3c622b985a [2020-09-25 08:52:06,452 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:52:06,458 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:52:06,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:52:06,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:52:06,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:52:06,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1190dd1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06, skipping insertion in model container [2020-09-25 08:52:06,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:52:06,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:52:06,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:52:06,777 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:52:06,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:52:06,944 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:52:06,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06 WrapperNode [2020-09-25 08:52:06,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:52:06,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:52:06,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:52:06,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:52:06,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... [2020-09-25 08:52:06,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:52:06,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:52:06,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:52:06,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:52:06,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:52:07,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:52:07,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:52:07,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 08:52:07,082 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-25 08:52:07,083 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-25 08:52:07,083 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-25 08:52:07,083 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:52:07,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:52:07,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 08:52:07,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 08:52:07,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 08:52:07,084 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-25 08:52:07,084 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-25 08:52:07,084 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-25 08:52:07,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:52:07,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:52:07,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:52:07,613 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:52:07,614 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 08:52:07,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:52:07 BoogieIcfgContainer [2020-09-25 08:52:07,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:52:07,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:52:07,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:52:07,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:52:07,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:52:06" (1/3) ... [2020-09-25 08:52:07,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35014b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:52:07, skipping insertion in model container [2020-09-25 08:52:07,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:06" (2/3) ... [2020-09-25 08:52:07,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35014b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:52:07, skipping insertion in model container [2020-09-25 08:52:07,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:52:07" (3/3) ... [2020-09-25 08:52:07,645 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-09-25 08:52:07,656 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:52:07,666 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:52:07,689 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:52:07,720 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:52:07,720 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:52:07,720 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:52:07,720 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:52:07,720 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:52:07,720 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:52:07,721 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:52:07,721 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:52:07,747 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-09-25 08:52:07,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 08:52:07,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:07,761 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:07,762 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:07,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:07,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1377121462, now seen corresponding path program 1 times [2020-09-25 08:52:07,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:07,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165974978] [2020-09-25 08:52:07,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:08,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:08,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:10,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:10,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:10,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 08:52:10,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:52:10,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2835 [2020-09-25 08:52:10,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:10,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:52:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 08:52:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 08:52:10,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:52:11,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:11,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:11,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:11,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:11,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:11,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:11,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:11,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:11,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:11,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:11,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:11,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:11,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 08:52:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:11,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:11,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:11,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:11,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:11,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:11,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:11,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:11,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:11,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:11,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:11,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:11,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 08:52:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:11,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:11,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:11,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:11,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:11,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:52:11,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:11,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:11,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:11,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:11,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:11,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 08:52:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:11,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:11,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:11,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:11,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:11,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:52:11,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:11,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:11,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:11,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 08:52:11,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165974978] [2020-09-25 08:52:11,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:11,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:52:11,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241926642] [2020-09-25 08:52:11,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:52:11,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:11,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:52:11,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:52:11,153 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 9 states. [2020-09-25 08:52:11,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:11,536 INFO L93 Difference]: Finished difference Result 298 states and 378 transitions. [2020-09-25 08:52:11,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:52:11,538 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2020-09-25 08:52:11,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:11,557 INFO L225 Difference]: With dead ends: 298 [2020-09-25 08:52:11,557 INFO L226 Difference]: Without dead ends: 189 [2020-09-25 08:52:11,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-25 08:52:11,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-25 08:52:11,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 167. [2020-09-25 08:52:11,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-25 08:52:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 197 transitions. [2020-09-25 08:52:11,645 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 197 transitions. Word has length 81 [2020-09-25 08:52:11,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:11,646 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 197 transitions. [2020-09-25 08:52:11,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:52:11,646 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 197 transitions. [2020-09-25 08:52:11,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 08:52:11,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:11,651 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:11,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:52:11,652 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:11,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:11,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1623188401, now seen corresponding path program 1 times [2020-09-25 08:52:11,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:11,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889523512] [2020-09-25 08:52:11,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:11,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:11,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:13,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:14,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:14,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 08:52:14,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:52:14,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2406 [2020-09-25 08:52:14,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:14,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:52:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 08:52:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 08:52:14,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:14,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:14,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:14,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:14,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:14,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:14,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:14,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:14,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:14,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:14,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 08:52:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:14,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:14,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:14,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:14,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:14,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:14,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:14,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:14,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:14,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 08:52:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:14,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:14,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:14,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:14,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:14,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:52:14,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:14,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:14,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:14,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:14,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:14,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 08:52:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:14,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:14,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:14,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:14,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:14,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:52:14,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:14,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:14,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:52:14,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:14,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:14,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:52:14,330 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 08:52:14,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889523512] [2020-09-25 08:52:14,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:14,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 08:52:14,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645985860] [2020-09-25 08:52:14,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 08:52:14,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:14,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 08:52:14,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:52:14,336 INFO L87 Difference]: Start difference. First operand 167 states and 197 transitions. Second operand 10 states. [2020-09-25 08:52:14,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:14,648 INFO L93 Difference]: Finished difference Result 248 states and 292 transitions. [2020-09-25 08:52:14,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:52:14,649 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-09-25 08:52:14,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:14,652 INFO L225 Difference]: With dead ends: 248 [2020-09-25 08:52:14,652 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 08:52:14,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-09-25 08:52:14,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 08:52:14,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 144. [2020-09-25 08:52:14,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-25 08:52:14,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 167 transitions. [2020-09-25 08:52:14,669 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 167 transitions. Word has length 84 [2020-09-25 08:52:14,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:14,670 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 167 transitions. [2020-09-25 08:52:14,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 08:52:14,670 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 167 transitions. [2020-09-25 08:52:14,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 08:52:14,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:14,674 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:14,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:52:14,675 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:14,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:14,676 INFO L82 PathProgramCache]: Analyzing trace with hash 646909882, now seen corresponding path program 1 times [2020-09-25 08:52:14,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:14,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364636199] [2020-09-25 08:52:14,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:14,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:14,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:15,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 08:52:15,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:15,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-09-25 08:52:15,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:15,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 08:52:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:52:15,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:15,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:15,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:15,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:15,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:15,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:15,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:15,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:15,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:15,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:15,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:15,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:15,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 08:52:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:15,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:15,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:15,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:15,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:15,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:15,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:15,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:15,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:15,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 08:52:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:15,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:15,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:52:15,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:15,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:52:15,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:15,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:15,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:15,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:15,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:15,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:15,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 08:52:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:15,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:15,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:15,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:15,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:15,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:52:15,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:15,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:15,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:15,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 08:52:15,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 08:52:15,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364636199] [2020-09-25 08:52:15,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:52:15,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 08:52:15,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204001944] [2020-09-25 08:52:15,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:52:15,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:15,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:52:15,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:52:15,686 INFO L87 Difference]: Start difference. First operand 144 states and 167 transitions. Second operand 8 states. [2020-09-25 08:52:15,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:15,787 INFO L93 Difference]: Finished difference Result 261 states and 300 transitions. [2020-09-25 08:52:15,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 08:52:15,788 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-09-25 08:52:15,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:15,792 INFO L225 Difference]: With dead ends: 261 [2020-09-25 08:52:15,792 INFO L226 Difference]: Without dead ends: 194 [2020-09-25 08:52:15,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:52:15,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-25 08:52:15,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 163. [2020-09-25 08:52:15,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-09-25 08:52:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 186 transitions. [2020-09-25 08:52:15,808 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 186 transitions. Word has length 85 [2020-09-25 08:52:15,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:15,809 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 186 transitions. [2020-09-25 08:52:15,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:52:15,809 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 186 transitions. [2020-09-25 08:52:15,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 08:52:15,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:15,811 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:15,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:52:15,811 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:15,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:15,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1795206334, now seen corresponding path program 2 times [2020-09-25 08:52:15,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:15,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406074118] [2020-09-25 08:52:15,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:15,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:16,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:16,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 08:52:16,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:16,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-09-25 08:52:16,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:16,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 08:52:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 08:52:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:52:16,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:16,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:16,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:16,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:16,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:16,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:16,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:16,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:16,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:16,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:16,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 08:52:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:16,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:16,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:16,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:52:16,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:16,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:16,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:16,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:16,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:16,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:16,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:16,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:16,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 08:52:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:16,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:16,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:16,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:52:16,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:16,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 08:52:16,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:16,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:52:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 08:52:16,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:16,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 08:52:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:17,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:17,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:17,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:52:17,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:17,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 08:52:17,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:17,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:17,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:52:17,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:17,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 08:52:17,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 08:52:17,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406074118] [2020-09-25 08:52:17,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:52:17,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-25 08:52:17,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816256491] [2020-09-25 08:52:17,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 08:52:17,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:17,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 08:52:17,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:52:17,100 INFO L87 Difference]: Start difference. First operand 163 states and 186 transitions. Second operand 15 states. [2020-09-25 08:52:17,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:17,625 INFO L93 Difference]: Finished difference Result 302 states and 358 transitions. [2020-09-25 08:52:17,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 08:52:17,626 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-09-25 08:52:17,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:17,629 INFO L225 Difference]: With dead ends: 302 [2020-09-25 08:52:17,629 INFO L226 Difference]: Without dead ends: 243 [2020-09-25 08:52:17,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2020-09-25 08:52:17,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-09-25 08:52:17,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 216. [2020-09-25 08:52:17,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-25 08:52:17,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 251 transitions. [2020-09-25 08:52:17,649 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 251 transitions. Word has length 89 [2020-09-25 08:52:17,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:17,649 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 251 transitions. [2020-09-25 08:52:17,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 08:52:17,650 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 251 transitions. [2020-09-25 08:52:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 08:52:17,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:17,652 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:17,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:52:17,652 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:17,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:17,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1839352304, now seen corresponding path program 1 times [2020-09-25 08:52:17,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:17,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330522723] [2020-09-25 08:52:17,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 08:52:17,677 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 08:52:17,677 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 08:52:17,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:52:17,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:52:17 BoogieIcfgContainer [2020-09-25 08:52:17,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:52:17,714 INFO L168 Benchmark]: Toolchain (without parser) took 11258.41 ms. Allocated memory was 143.7 MB in the beginning and 299.4 MB in the end (delta: 155.7 MB). Free memory was 102.2 MB in the beginning and 132.3 MB in the end (delta: -30.1 MB). Peak memory consumption was 125.7 MB. Max. memory is 7.1 GB. [2020-09-25 08:52:17,715 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 08:52:17,716 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.34 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 101.6 MB in the beginning and 182.9 MB in the end (delta: -81.3 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-09-25 08:52:17,717 INFO L168 Benchmark]: Boogie Preprocessor took 50.25 ms. Allocated memory is still 205.0 MB. Free memory was 182.9 MB in the beginning and 181.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-25 08:52:17,718 INFO L168 Benchmark]: RCFGBuilder took 629.68 ms. Allocated memory is still 205.0 MB. Free memory was 180.3 MB in the beginning and 149.6 MB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. [2020-09-25 08:52:17,719 INFO L168 Benchmark]: TraceAbstraction took 10079.78 ms. Allocated memory was 205.0 MB in the beginning and 299.4 MB in the end (delta: 94.4 MB). Free memory was 148.9 MB in the beginning and 132.3 MB in the end (delta: 16.7 MB). Peak memory consumption was 111.1 MB. Max. memory is 7.1 GB. [2020-09-25 08:52:17,723 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 486.34 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 101.6 MB in the beginning and 182.9 MB in the end (delta: -81.3 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.25 ms. Allocated memory is still 205.0 MB. Free memory was 182.9 MB in the beginning and 181.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 629.68 ms. Allocated memory is still 205.0 MB. Free memory was 180.3 MB in the beginning and 149.6 MB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10079.78 ms. Allocated memory was 205.0 MB in the beginning and 299.4 MB in the end (delta: 94.4 MB). Free memory was 148.9 MB in the beginning and 132.3 MB in the end (delta: 16.7 MB). Peak memory consumption was 111.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 103, overapproximation of bitwiseAnd at line 101. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L231] CALL, EXPR base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] RET, EXPR base2flt(0, 0) [L231] zero = base2flt(0, 0) [L232] CALL, EXPR base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND TRUE m >= 1U << 25U [L54] COND TRUE e >= 127 [L55] __retres4 = 4294967295U [L70] return (__retres4); [L232] RET, EXPR base2flt(ma, ea) [L232] a = base2flt(ma, ea) [L233] CALL, EXPR base2flt(mb, eb) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] RET, EXPR base2flt(mb, eb) [L233] b = base2flt(mb, eb) [L234] CALL addflt(a, b) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND FALSE !(a < b) [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L104] CALL __VERIFIER_assert(ea >= eb) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 169 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.9s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 603 SDtfs, 339 SDslu, 4788 SDs, 0 SdLazy, 500 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 100 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 335 ConstructedInterpolants, 0 QuantifiedInterpolants, 77025 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 102/108 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...