/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/bitvector/soft_float_4-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:13:57,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:13:57,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:13:57,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:13:57,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:13:57,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:13:57,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:13:57,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:13:57,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:13:57,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:13:57,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:13:57,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:13:57,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:13:57,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:13:57,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:13:57,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:13:57,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:13:57,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:13:57,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:13:57,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:13:57,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:13:57,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:13:57,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:13:57,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:13:57,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:13:57,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:13:57,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:13:57,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:13:57,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:13:57,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:13:57,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:13:57,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:13:57,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:13:57,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:13:57,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:13:57,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:13:57,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:13:57,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:13:57,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:13:57,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:13:57,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:13:57,316 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 00:13:57,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:13:57,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:13:57,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:13:57,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:13:57,341 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:13:57,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:13:57,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:13:57,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:13:57,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:13:57,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:13:57,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:13:57,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:13:57,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:13:57,343 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:13:57,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:13:57,344 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:13:57,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:13:57,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:13:57,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:13:57,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:13:57,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:13:57,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:13:57,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:13:57,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:13:57,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:13:57,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:13:57,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:13:57,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:13:57,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:13:57,347 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:13:57,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:13:57,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:13:57,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:13:57,692 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:13:57,693 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:13:57,694 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c [2020-10-14 00:13:57,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b1b4a0bb/86e1a8d14ed04965859f934cc4529cdb/FLAGa0ee6fb51 [2020-10-14 00:13:58,339 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:13:58,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c [2020-10-14 00:13:58,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b1b4a0bb/86e1a8d14ed04965859f934cc4529cdb/FLAGa0ee6fb51 [2020-10-14 00:13:58,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b1b4a0bb/86e1a8d14ed04965859f934cc4529cdb [2020-10-14 00:13:58,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:13:58,690 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:13:58,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:13:58,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:13:58,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:13:58,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:13:58" (1/1) ... [2020-10-14 00:13:58,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14ac9329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:58, skipping insertion in model container [2020-10-14 00:13:58,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:13:58" (1/1) ... [2020-10-14 00:13:58,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:13:58,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:13:58,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:13:58,942 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:13:59,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:13:59,103 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:13:59,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:59 WrapperNode [2020-10-14 00:13:59,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:13:59,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:13:59,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:13:59,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:13:59,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:59" (1/1) ... [2020-10-14 00:13:59,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:59" (1/1) ... [2020-10-14 00:13:59,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:59" (1/1) ... [2020-10-14 00:13:59,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:59" (1/1) ... [2020-10-14 00:13:59,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:59" (1/1) ... [2020-10-14 00:13:59,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:59" (1/1) ... [2020-10-14 00:13:59,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:59" (1/1) ... [2020-10-14 00:13:59,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:13:59,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:13:59,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:13:59,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:13:59,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:59" (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 00:13:59,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:13:59,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:13:59,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 00:13:59,220 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-14 00:13:59,220 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-14 00:13:59,220 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-14 00:13:59,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:13:59,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:13:59,220 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 00:13:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 00:13:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 00:13:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 00:13:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-14 00:13:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-14 00:13:59,221 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-14 00:13:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:13:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:13:59,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:13:59,715 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:13:59,716 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 00:13:59,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:13:59 BoogieIcfgContainer [2020-10-14 00:13:59,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:13:59,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:13:59,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:13:59,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:13:59,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:13:58" (1/3) ... [2020-10-14 00:13:59,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66caa047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:13:59, skipping insertion in model container [2020-10-14 00:13:59,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:13:59" (2/3) ... [2020-10-14 00:13:59,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66caa047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:13:59, skipping insertion in model container [2020-10-14 00:13:59,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:13:59" (3/3) ... [2020-10-14 00:13:59,729 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2020-10-14 00:13:59,738 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:13:59,749 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:13:59,764 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:13:59,788 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:13:59,789 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:13:59,789 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:13:59,789 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:13:59,792 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:13:59,792 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:13:59,793 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:13:59,793 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:13:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-10-14 00:13:59,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 00:13:59,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:13:59,821 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:13:59,822 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:13:59,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:13:59,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1905040847, now seen corresponding path program 1 times [2020-10-14 00:13:59,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:13:59,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965471542] [2020-10-14 00:13:59,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:00,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:00,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:01,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:01,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 00:14:01,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:01,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1419 [2020-10-14 00:14:01,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:01,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:14:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 00:14:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 00:14:01,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:14:01,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:01,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:01,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:01,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:01,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:01,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:01,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:01,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:01,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:01,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:01,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:01,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:01,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:01,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:01,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:01,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:01,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:14:01,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:01,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:01,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:01,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:01,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:01,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:01,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:01,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:01,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:01,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:01,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:01,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:14:01,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:01,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:01,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:01,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:01,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:14:01,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:01,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:14:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:01,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:01,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:01,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:01,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:01,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:14:01,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:01,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:14:01,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:01,671 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 00:14:01,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965471542] [2020-10-14 00:14:01,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:01,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:14:01,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738642084] [2020-10-14 00:14:01,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:14:01,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:01,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:14:01,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:14:01,701 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 9 states. [2020-10-14 00:14:01,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:01,933 INFO L93 Difference]: Finished difference Result 146 states and 222 transitions. [2020-10-14 00:14:01,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:14:01,934 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-14 00:14:01,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:01,948 INFO L225 Difference]: With dead ends: 146 [2020-10-14 00:14:01,948 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 00:14:01,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:14:01,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 00:14:02,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2020-10-14 00:14:02,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-14 00:14:02,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 104 transitions. [2020-10-14 00:14:02,016 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 104 transitions. Word has length 34 [2020-10-14 00:14:02,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:02,016 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 104 transitions. [2020-10-14 00:14:02,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:14:02,017 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 104 transitions. [2020-10-14 00:14:02,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 00:14:02,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:02,020 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:14:02,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:14:02,020 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:02,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:02,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1962299149, now seen corresponding path program 1 times [2020-10-14 00:14:02,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:02,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857752710] [2020-10-14 00:14:02,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:02,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:02,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:02,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:02,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 00:14:02,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:02,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 802 [2020-10-14 00:14:02,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:02,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:02,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:14:02,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 00:14:02,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 00:14:02,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:02,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:02,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:02,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:02,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:02,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:02,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:02,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:02,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:02,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:02,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:02,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:02,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:02,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:02,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:02,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:14:02,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:02,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:02,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:02,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:02,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:02,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:02,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:02,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:02,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:02,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:14:02,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:02,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:02,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:02,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:02,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:14:02,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:02,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:14:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:02,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:02,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:02,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:02,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:02,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:14:02,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:02,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:02,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:14:02,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:02,990 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 00:14:02,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857752710] [2020-10-14 00:14:02,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:02,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:14:02,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012292550] [2020-10-14 00:14:02,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:14:02,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:02,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:14:02,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:14:02,994 INFO L87 Difference]: Start difference. First operand 76 states and 104 transitions. Second operand 9 states. [2020-10-14 00:14:03,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:03,161 INFO L93 Difference]: Finished difference Result 120 states and 161 transitions. [2020-10-14 00:14:03,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:14:03,162 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-14 00:14:03,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:03,164 INFO L225 Difference]: With dead ends: 120 [2020-10-14 00:14:03,164 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 00:14:03,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:14:03,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 00:14:03,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2020-10-14 00:14:03,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 00:14:03,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 88 transitions. [2020-10-14 00:14:03,179 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 88 transitions. Word has length 34 [2020-10-14 00:14:03,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:03,180 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 88 transitions. [2020-10-14 00:14:03,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:14:03,180 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 88 transitions. [2020-10-14 00:14:03,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 00:14:03,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:03,183 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 00:14:03,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:14:03,183 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:03,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:03,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1544464126, now seen corresponding path program 1 times [2020-10-14 00:14:03,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:03,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134594421] [2020-10-14 00:14:03,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:03,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:03,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:04,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:04,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 00:14:04,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:14:04,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-10-14 00:14:04,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:04,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:04,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:14:04,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 00:14:04,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 00:14:04,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:04,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:04,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:04,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:04,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:04,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:04,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:04,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:04,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:04,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:04,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:04,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:04,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:04,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:04,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:04,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:04,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:04,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:04,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:04,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:04,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:04,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:04,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:04,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:04,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:04,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:04,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:14:04,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:04,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:04,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:04,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:04,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 00:14:04,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:04,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 00:14:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:04,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:04,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:04,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:04,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:04,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:14:04,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:04,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:04,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:04,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:04,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:14:04,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 00:14:04,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134594421] [2020-10-14 00:14:04,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:04,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:14:04,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287429811] [2020-10-14 00:14:04,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:14:04,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:04,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:14:04,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:14:04,482 INFO L87 Difference]: Start difference. First operand 66 states and 88 transitions. Second operand 8 states. [2020-10-14 00:14:04,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:04,617 INFO L93 Difference]: Finished difference Result 123 states and 170 transitions. [2020-10-14 00:14:04,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:14:04,618 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-14 00:14:04,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:04,620 INFO L225 Difference]: With dead ends: 123 [2020-10-14 00:14:04,620 INFO L226 Difference]: Without dead ends: 95 [2020-10-14 00:14:04,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:14:04,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-14 00:14:04,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 88. [2020-10-14 00:14:04,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 00:14:04,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 122 transitions. [2020-10-14 00:14:04,636 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 122 transitions. Word has length 38 [2020-10-14 00:14:04,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:04,637 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 122 transitions. [2020-10-14 00:14:04,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:14:04,637 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 122 transitions. [2020-10-14 00:14:04,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 00:14:04,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:04,640 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 00:14:04,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:14:04,640 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:04,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:04,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1601722428, now seen corresponding path program 1 times [2020-10-14 00:14:04,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:04,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595835083] [2020-10-14 00:14:04,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:04,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:04,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:04,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 00:14:04,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:04,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 00:14:04,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:04,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:04,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:14:04,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 00:14:04,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:14:04,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:04,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:04,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:04,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:04,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:04,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:04,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:04,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:04,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:04,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:04,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:04,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:04,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:04,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:04,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:04,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:04,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:04,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:14:04,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:04,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:04,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:04,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:04,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:04,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:04,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:04,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:04,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:04,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:14:04,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:04,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:04,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:04,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:04,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:04,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:04,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 00:14:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:04,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:04,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:04,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:04,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:04,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:14:04,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:04,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:04,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:04,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:14:04,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:04,928 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 00:14:04,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595835083] [2020-10-14 00:14:04,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:14:04,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 00:14:04,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933536384] [2020-10-14 00:14:04,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:14:04,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:04,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:14:04,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:14:04,932 INFO L87 Difference]: Start difference. First operand 88 states and 122 transitions. Second operand 8 states. [2020-10-14 00:14:05,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:05,049 INFO L93 Difference]: Finished difference Result 163 states and 218 transitions. [2020-10-14 00:14:05,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:14:05,050 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-14 00:14:05,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:05,053 INFO L225 Difference]: With dead ends: 163 [2020-10-14 00:14:05,053 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 00:14:05,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:14:05,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 00:14:05,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-10-14 00:14:05,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-14 00:14:05,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 130 transitions. [2020-10-14 00:14:05,070 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 130 transitions. Word has length 38 [2020-10-14 00:14:05,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:05,071 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 130 transitions. [2020-10-14 00:14:05,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:14:05,071 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 130 transitions. [2020-10-14 00:14:05,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 00:14:05,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:05,073 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-14 00:14:05,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:14:05,074 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:05,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:05,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1924883715, now seen corresponding path program 1 times [2020-10-14 00:14:05,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:05,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539727522] [2020-10-14 00:14:05,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:05,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:05,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:05,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:08,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:08,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 00:14:08,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:14:08,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3531 [2020-10-14 00:14:08,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:08,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:14:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 00:14:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 00:14:08,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:08,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:08,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:08,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:08,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:08,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:08,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:08,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:08,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:08,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:08,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:08,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:08,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:08,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:08,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:08,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:08,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:08,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:08,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:14:08,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:08,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:08,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:08,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:08,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:08,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:14:08,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:08,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:08,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:08,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:08,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:08,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:14:08,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:08,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:08,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:08,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:08,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:14:08,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:08,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:14:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:08,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:08,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:08,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:08,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:08,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:14:08,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:08,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:14:08,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:08,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 00:14:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:08,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:08,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:08,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:14:08,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:08,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:14:08,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:08,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:08,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:14:08,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:08,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:14:08,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 00:14:08,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539727522] [2020-10-14 00:14:08,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:14:08,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:14:08,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92885616] [2020-10-14 00:14:08,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:14:08,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:08,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:14:08,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:14:08,795 INFO L87 Difference]: Start difference. First operand 96 states and 130 transitions. Second operand 8 states. [2020-10-14 00:14:08,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:08,892 INFO L93 Difference]: Finished difference Result 135 states and 181 transitions. [2020-10-14 00:14:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:14:08,894 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-10-14 00:14:08,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:08,897 INFO L225 Difference]: With dead ends: 135 [2020-10-14 00:14:08,897 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 00:14:08,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:14:08,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 00:14:08,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 106. [2020-10-14 00:14:08,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-14 00:14:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2020-10-14 00:14:08,942 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 141 transitions. Word has length 42 [2020-10-14 00:14:08,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:08,943 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 141 transitions. [2020-10-14 00:14:08,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:14:08,943 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 141 transitions. [2020-10-14 00:14:08,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 00:14:08,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:08,947 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 00:14:08,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:14:08,947 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:08,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:08,948 INFO L82 PathProgramCache]: Analyzing trace with hash 17099885, now seen corresponding path program 2 times [2020-10-14 00:14:08,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:08,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681382626] [2020-10-14 00:14:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:08,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:09,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:09,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 00:14:09,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:09,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 00:14:09,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:09,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:14:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 00:14:09,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 00:14:09,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:09,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:14:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:09,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:09,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:09,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:14:09,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:09,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:14:09,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:09,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:09,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:09,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:14:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:09,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:09,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:09,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:14:09,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:09,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:14:09,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:09,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:09,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:14:09,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:14:09,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:09,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 00:14:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:09,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:09,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:09,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:09,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:09,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:14:09,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:09,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:09,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:14:09,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:09,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 00:14:09,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:09,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 00:14:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:14:09,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:14:09,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:14:09,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:14:09,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:14:09,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:14:09,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:14:09,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:14:09,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:14:09,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:14:09,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:14:09,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:14:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 00:14:09,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681382626] [2020-10-14 00:14:09,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:14:09,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-14 00:14:09,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093826842] [2020-10-14 00:14:09,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:14:09,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:14:09,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:14:09,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:14:09,474 INFO L87 Difference]: Start difference. First operand 106 states and 141 transitions. Second operand 13 states. [2020-10-14 00:14:09,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:14:09,775 INFO L93 Difference]: Finished difference Result 189 states and 252 transitions. [2020-10-14 00:14:09,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 00:14:09,776 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-14 00:14:09,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:14:09,778 INFO L225 Difference]: With dead ends: 189 [2020-10-14 00:14:09,778 INFO L226 Difference]: Without dead ends: 158 [2020-10-14 00:14:09,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:14:09,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-14 00:14:09,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 144. [2020-10-14 00:14:09,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-14 00:14:09,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 188 transitions. [2020-10-14 00:14:09,793 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 188 transitions. Word has length 42 [2020-10-14 00:14:09,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:14:09,793 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 188 transitions. [2020-10-14 00:14:09,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:14:09,793 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 188 transitions. [2020-10-14 00:14:09,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 00:14:09,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:14:09,795 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:14:09,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:14:09,795 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:14:09,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:14:09,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1540531889, now seen corresponding path program 1 times [2020-10-14 00:14:09,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:14:09,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936400983] [2020-10-14 00:14:09,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:14:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 00:14:09,810 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 00:14:09,810 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 00:14:09,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:14:09,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 12:14:09 BoogieIcfgContainer [2020-10-14 00:14:09,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 00:14:09,838 INFO L168 Benchmark]: Toolchain (without parser) took 11146.87 ms. Allocated memory was 147.8 MB in the beginning and 367.5 MB in the end (delta: 219.7 MB). Free memory was 103.1 MB in the beginning and 165.2 MB in the end (delta: -62.0 MB). Peak memory consumption was 157.6 MB. Max. memory is 7.1 GB. [2020-10-14 00:14:09,839 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 147.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-14 00:14:09,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.20 ms. Allocated memory was 147.8 MB in the beginning and 202.9 MB in the end (delta: 55.1 MB). Free memory was 102.9 MB in the beginning and 179.1 MB in the end (delta: -76.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-10-14 00:14:09,841 INFO L168 Benchmark]: Boogie Preprocessor took 43.34 ms. Allocated memory is still 202.9 MB. Free memory was 179.1 MB in the beginning and 177.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-14 00:14:09,841 INFO L168 Benchmark]: RCFGBuilder took 573.79 ms. Allocated memory is still 202.9 MB. Free memory was 177.1 MB in the beginning and 152.8 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-10-14 00:14:09,842 INFO L168 Benchmark]: TraceAbstraction took 10112.92 ms. Allocated memory was 202.9 MB in the beginning and 367.5 MB in the end (delta: 164.6 MB). Free memory was 152.1 MB in the beginning and 165.2 MB in the end (delta: -13.1 MB). Peak memory consumption was 151.6 MB. Max. memory is 7.1 GB. [2020-10-14 00:14:09,846 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 147.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 412.20 ms. Allocated memory was 147.8 MB in the beginning and 202.9 MB in the end (delta: 55.1 MB). Free memory was 102.9 MB in the beginning and 179.1 MB in the end (delta: -76.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.34 ms. Allocated memory is still 202.9 MB. Free memory was 179.1 MB in the beginning and 177.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 573.79 ms. Allocated memory is still 202.9 MB. Free memory was 177.1 MB in the beginning and 152.8 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10112.92 ms. Allocated memory was 202.9 MB in the beginning and 367.5 MB in the end (delta: 164.6 MB). Free memory was 152.1 MB in the beginning and 165.2 MB in the end (delta: -13.1 MB). Peak memory consumption was 151.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 101, overapproximation of bitwiseAnd at line 99. Possible FailurePath: [L217] unsigned int a ; [L218] unsigned int ma = __VERIFIER_nondet_uint(); [L219] signed char ea = __VERIFIER_nondet_char(); [L220] unsigned int b ; [L221] unsigned int mb = __VERIFIER_nondet_uint(); [L222] signed char eb = __VERIFIER_nondet_char(); [L223] unsigned int r_add1 ; [L224] unsigned int r_add2 ; [L225] unsigned int zero ; [L226] int tmp ; [L227] int tmp___0 ; [L228] int __retres14 ; [L232] CALL, EXPR base2flt(0, 0) [L16] unsigned int res ; [L17] unsigned int __retres4 ; [L20] COND TRUE ! m [L21] __retres4 = 0U [L71] return (__retres4); [L232] RET, EXPR base2flt(0, 0) [L232] zero = base2flt(0, 0) [L233] CALL, EXPR base2flt(ma, ea) [L16] unsigned int res ; [L17] unsigned int __retres4 ; [L20] COND FALSE !(! m) [L26] COND FALSE !(m < 1U << 24U) [L48] COND TRUE 1 [L50] COND TRUE m >= 1U << 25U [L55] COND TRUE e >= 127 [L56] __retres4 = 4294967295U [L71] return (__retres4); [L233] RET, EXPR base2flt(ma, ea) [L233] a = base2flt(ma, ea) [L234] CALL, EXPR base2flt(mb, eb) [L16] unsigned int res ; [L17] unsigned int __retres4 ; [L20] COND FALSE !(! m) [L26] COND FALSE !(m < 1U << 24U) [L48] COND TRUE 1 [L50] COND FALSE !(m >= 1U << 25U) [L67] m = m & ~ (1U << 24U) [L68] res = m | ((unsigned int )(e + 128) << 24U) [L69] __retres4 = res [L71] return (__retres4); [L234] RET, EXPR base2flt(mb, eb) [L234] b = base2flt(mb, eb) [L235] CALL addflt(a, b) [L75] unsigned int res ; [L76] unsigned int ma ; [L77] unsigned int mb ; [L78] unsigned int delta ; [L79] int ea ; [L80] int eb ; [L81] unsigned int tmp ; [L82] unsigned int __retres10 ; [L85] COND FALSE !(a < b) [L92] COND FALSE !(! b) [L99] ma = a & ((1U << 24U) - 1U) [L100] ea = (int )(a >> 24U) - 128 [L101] ma = ma | (1U << 24U) [L102] mb = b & ((1U << 24U) - 1U) [L103] eb = (int )(b >> 24U) - 128 [L104] mb = mb | (1U << 24U) [L105] CALL __VERIFIER_assert(ea >= eb) [L7] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.0s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 474 SDtfs, 203 SDslu, 3250 SDs, 0 SdLazy, 504 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=6, 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, 6 MinimizatonAttempts, 73 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 18419 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 85/97 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...