/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:28:38,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:28:38,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:28:38,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:28:38,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:28:38,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:28:38,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:28:38,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:28:38,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:28:38,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:28:38,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:28:38,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:28:38,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:28:38,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:28:38,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:28:38,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:28:38,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:28:38,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:28:38,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:28:38,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:28:38,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:28:38,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:28:38,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:28:38,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:28:38,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:28:38,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:28:38,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:28:38,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:28:38,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:28:38,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:28:38,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:28:38,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:28:38,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:28:38,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:28:38,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:28:38,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:28:38,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:28:38,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:28:38,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:28:38,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:28:38,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:28:38,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:28:38,478 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:28:38,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:28:38,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:28:38,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:28:38,480 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:28:38,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:28:38,481 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:28:38,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:28:38,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:28:38,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:28:38,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:28:38,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:28:38,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:28:38,482 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:28:38,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:28:38,483 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:28:38,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:28:38,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:28:38,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:28:38,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:28:38,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:28:38,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:28:38,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:28:38,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:28:38,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:28:38,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:28:38,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:28:38,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:28:38,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:28:38,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:28:39,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:28:39,111 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:28:39,116 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:28:39,120 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:28:39,122 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:28:39,123 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-25 14:28:39,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f8b93896/1a5f9915a1ed4ba48d19547044b92119/FLAG041250158 [2020-09-25 14:28:39,789 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:28:39,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-25 14:28:39,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f8b93896/1a5f9915a1ed4ba48d19547044b92119/FLAG041250158 [2020-09-25 14:28:40,098 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f8b93896/1a5f9915a1ed4ba48d19547044b92119 [2020-09-25 14:28:40,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:28:40,116 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:28:40,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:28:40,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:28:40,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:28:40,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:28:40" (1/1) ... [2020-09-25 14:28:40,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d939399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:40, skipping insertion in model container [2020-09-25 14:28:40,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:28:40" (1/1) ... [2020-09-25 14:28:40,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:28:40,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:28:40,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:28:40,441 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:28:40,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:28:40,590 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:28:40,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:40 WrapperNode [2020-09-25 14:28:40,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:28:40,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:28:40,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:28:40,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:28:40,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:40" (1/1) ... [2020-09-25 14:28:40,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:40" (1/1) ... [2020-09-25 14:28:40,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:40" (1/1) ... [2020-09-25 14:28:40,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:40" (1/1) ... [2020-09-25 14:28:40,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:40" (1/1) ... [2020-09-25 14:28:40,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:40" (1/1) ... [2020-09-25 14:28:40,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:40" (1/1) ... [2020-09-25 14:28:40,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:28:40,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:28:40,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:28:40,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:28:40,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:28:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:28:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:28:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 14:28:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-25 14:28:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-25 14:28:40,734 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-25 14:28:40,734 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:28:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:28:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 14:28:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 14:28:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 14:28:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-25 14:28:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-25 14:28:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-25 14:28:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:28:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:28:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:28:41,336 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:28:41,337 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 14:28:41,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:41 BoogieIcfgContainer [2020-09-25 14:28:41,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:28:41,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:28:41,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:28:41,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:28:41,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:28:40" (1/3) ... [2020-09-25 14:28:41,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6beea1ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:41, skipping insertion in model container [2020-09-25 14:28:41,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:40" (2/3) ... [2020-09-25 14:28:41,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6beea1ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:41, skipping insertion in model container [2020-09-25 14:28:41,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:41" (3/3) ... [2020-09-25 14:28:41,354 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-09-25 14:28:41,366 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:28:41,378 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:28:41,403 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:28:41,435 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:28:41,435 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:28:41,436 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:28:41,436 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:28:41,436 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:28:41,436 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:28:41,436 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:28:41,436 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:28:41,461 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-09-25 14:28:41,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 14:28:41,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:41,474 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:41,475 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:41,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:41,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1377121462, now seen corresponding path program 1 times [2020-09-25 14:28:41,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:41,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788611702] [2020-09-25 14:28:41,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:41,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:41,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:44,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:44,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:44,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 14:28:44,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:28:44,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2691 [2020-09-25 14:28:44,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:44,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:44,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:28:44,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 14:28:44,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 14:28:44,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 14:28:44,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:44,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:44,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:44,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:44,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:44,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:44,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:44,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:44,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:28:44,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 14:28:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:44,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:44,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:44,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:44,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:44,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:28:44,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:44,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:44,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:44,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:44,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:44,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:44,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:28:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:44,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:44,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:44,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:44,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:44,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:28:44,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:44,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:28:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:28:44,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:44,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:28:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:44,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:44,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:44,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:44,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:44,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:28:44,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:44,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:28:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:28:44,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 14:28:44,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788611702] [2020-09-25 14:28:44,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:28:44,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:28:44,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436116523] [2020-09-25 14:28:44,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:28:44,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:44,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:28:44,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:28:44,785 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 9 states. [2020-09-25 14:28:45,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:45,096 INFO L93 Difference]: Finished difference Result 298 states and 378 transitions. [2020-09-25 14:28:45,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:28:45,098 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2020-09-25 14:28:45,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:45,117 INFO L225 Difference]: With dead ends: 298 [2020-09-25 14:28:45,117 INFO L226 Difference]: Without dead ends: 189 [2020-09-25 14:28:45,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:28:45,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-25 14:28:45,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 167. [2020-09-25 14:28:45,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-25 14:28:45,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 197 transitions. [2020-09-25 14:28:45,215 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 197 transitions. Word has length 81 [2020-09-25 14:28:45,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:45,216 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 197 transitions. [2020-09-25 14:28:45,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:28:45,216 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 197 transitions. [2020-09-25 14:28:45,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 14:28:45,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:45,222 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:45,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:28:45,223 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:45,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:45,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1623188401, now seen corresponding path program 1 times [2020-09-25 14:28:45,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:45,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15970873] [2020-09-25 14:28:45,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:45,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:45,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:47,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:47,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:47,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 14:28:47,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:28:47,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2341 [2020-09-25 14:28:47,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:47,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:47,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:28:47,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 14:28:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:28:47,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:47,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:47,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:47,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:47,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:47,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:47,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:47,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:47,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:47,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:47,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:47,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:47,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:47,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 14:28:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:47,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:47,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:47,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:47,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:47,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:47,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:47,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:47,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:47,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:47,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:28:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:47,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:47,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:47,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:47,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:47,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:28:47,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:47,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:28:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:28:47,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:47,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:28:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:47,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:47,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:47,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:47,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:47,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:28:47,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:47,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:28:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:28:47,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 14:28:47,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15970873] [2020-09-25 14:28:47,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:28:47,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:28:47,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761983681] [2020-09-25 14:28:47,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:28:47,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:47,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:28:47,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:28:47,857 INFO L87 Difference]: Start difference. First operand 167 states and 197 transitions. Second operand 10 states. [2020-09-25 14:28:48,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:48,131 INFO L93 Difference]: Finished difference Result 248 states and 292 transitions. [2020-09-25 14:28:48,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:28:48,132 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-09-25 14:28:48,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:48,135 INFO L225 Difference]: With dead ends: 248 [2020-09-25 14:28:48,135 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 14:28:48,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:28:48,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 14:28:48,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 144. [2020-09-25 14:28:48,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-25 14:28:48,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 167 transitions. [2020-09-25 14:28:48,153 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 167 transitions. Word has length 84 [2020-09-25 14:28:48,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:48,153 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 167 transitions. [2020-09-25 14:28:48,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:28:48,154 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 167 transitions. [2020-09-25 14:28:48,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 14:28:48,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:48,158 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:48,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:28:48,158 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:48,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:48,159 INFO L82 PathProgramCache]: Analyzing trace with hash 646909882, now seen corresponding path program 1 times [2020-09-25 14:28:48,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:48,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862177939] [2020-09-25 14:28:48,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:48,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:48,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:48,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:48,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 14:28:48,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:48,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-09-25 14:28:48,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:48,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 14:28:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 14:28:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:28:48,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:49,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:49,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:49,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:49,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:49,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:49,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:28:49,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:49,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:49,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:49,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:49,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 14:28:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:49,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:49,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:49,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:49,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:49,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:49,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:49,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:49,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:49,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:49,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:49,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:49,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:28:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:49,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:49,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:49,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 14:28:49,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:49,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:28:49,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:49,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:28:49,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:49,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:28:49,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:49,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 14:28:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:49,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:49,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:49,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:49,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:49,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:28:49,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:49,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:28:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:28:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:49,471 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 14:28:49,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862177939] [2020-09-25 14:28:49,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:28:49,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 14:28:49,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211453690] [2020-09-25 14:28:49,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 14:28:49,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:49,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 14:28:49,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:28:49,476 INFO L87 Difference]: Start difference. First operand 144 states and 167 transitions. Second operand 17 states. [2020-09-25 14:28:49,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:49,910 INFO L93 Difference]: Finished difference Result 255 states and 303 transitions. [2020-09-25 14:28:49,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:28:49,911 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 85 [2020-09-25 14:28:49,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:49,916 INFO L225 Difference]: With dead ends: 255 [2020-09-25 14:28:49,916 INFO L226 Difference]: Without dead ends: 196 [2020-09-25 14:28:49,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2020-09-25 14:28:49,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-25 14:28:49,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 169. [2020-09-25 14:28:49,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-09-25 14:28:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 198 transitions. [2020-09-25 14:28:49,954 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 198 transitions. Word has length 85 [2020-09-25 14:28:49,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:49,955 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 198 transitions. [2020-09-25 14:28:49,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 14:28:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 198 transitions. [2020-09-25 14:28:49,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 14:28:49,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:49,958 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:49,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:28:49,959 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:49,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:49,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1996302692, now seen corresponding path program 1 times [2020-09-25 14:28:49,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:49,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127349582] [2020-09-25 14:28:49,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:49,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:50,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:50,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-25 14:28:50,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:50,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-25 14:28:50,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:50,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:28:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-25 14:28:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:28:50,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:50,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:50,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:50,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:50,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:50,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:50,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:50,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:50,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:50,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:50,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:50,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:50,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:50,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 14:28:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:50,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:50,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:50,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:50,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:50,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:50,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:50,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:50,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:50,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:50,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:50,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:50,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:28:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:50,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:50,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:50,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:28:50,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:50,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:28:50,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:50,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:50,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:50,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:28:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:50,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:50,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:50,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:50,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:50,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:28:50,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:50,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:50,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:28:50,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:50,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:28:50,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 14:28:50,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127349582] [2020-09-25 14:28:50,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:28:50,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:28:50,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372715645] [2020-09-25 14:28:50,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:28:50,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:50,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:28:50,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:28:50,383 INFO L87 Difference]: Start difference. First operand 169 states and 198 transitions. Second operand 8 states. [2020-09-25 14:28:50,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:50,542 INFO L93 Difference]: Finished difference Result 289 states and 336 transitions. [2020-09-25 14:28:50,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:28:50,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 86 [2020-09-25 14:28:50,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:50,545 INFO L225 Difference]: With dead ends: 289 [2020-09-25 14:28:50,546 INFO L226 Difference]: Without dead ends: 222 [2020-09-25 14:28:50,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:28:50,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-09-25 14:28:50,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 163. [2020-09-25 14:28:50,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-09-25 14:28:50,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 186 transitions. [2020-09-25 14:28:50,561 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 186 transitions. Word has length 86 [2020-09-25 14:28:50,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:50,561 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 186 transitions. [2020-09-25 14:28:50,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:28:50,562 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 186 transitions. [2020-09-25 14:28:50,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 14:28:50,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:50,563 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:50,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:28:50,564 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:50,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:50,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1795206334, now seen corresponding path program 2 times [2020-09-25 14:28:50,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:50,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117025607] [2020-09-25 14:28:50,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:50,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:51,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:51,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 14:28:51,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:51,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-09-25 14:28:51,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:51,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:51,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 14:28:51,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 14:28:51,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:28:51,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:51,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:51,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:51,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:51,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:28:51,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:28:51,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:51,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:51,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:51,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:51,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 14:28:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:51,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:51,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:51,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:28:51,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:51,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:28:51,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:51,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:51,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:51,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:51,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:51,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:28:51,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:28:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:51,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:51,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:51,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 14:28:51,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:51,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 14:28:51,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:51,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:51,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:28:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:28:51,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:51,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 14:28:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:51,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:51,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:51,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 14:28:51,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:51,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 14:28:51,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:51,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:28:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:28:51,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:51,939 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 14:28:51,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117025607] [2020-09-25 14:28:51,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:28:51,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-25 14:28:51,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526546506] [2020-09-25 14:28:51,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 14:28:51,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:51,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 14:28:51,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:28:51,946 INFO L87 Difference]: Start difference. First operand 163 states and 186 transitions. Second operand 15 states. [2020-09-25 14:28:52,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:52,506 INFO L93 Difference]: Finished difference Result 302 states and 358 transitions. [2020-09-25 14:28:52,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:28:52,507 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-09-25 14:28:52,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:52,511 INFO L225 Difference]: With dead ends: 302 [2020-09-25 14:28:52,511 INFO L226 Difference]: Without dead ends: 243 [2020-09-25 14:28:52,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2020-09-25 14:28:52,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-09-25 14:28:52,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 216. [2020-09-25 14:28:52,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-25 14:28:52,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 251 transitions. [2020-09-25 14:28:52,536 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 251 transitions. Word has length 89 [2020-09-25 14:28:52,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:52,536 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 251 transitions. [2020-09-25 14:28:52,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 14:28:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 251 transitions. [2020-09-25 14:28:52,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 14:28:52,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:52,541 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:52,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:28:52,542 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:52,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:52,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1839352304, now seen corresponding path program 1 times [2020-09-25 14:28:52,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:52,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818224984] [2020-09-25 14:28:52,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:28:52,569 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:28:52,569 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:28:52,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:28:52,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:28:52 BoogieIcfgContainer [2020-09-25 14:28:52,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:28:52,615 INFO L168 Benchmark]: Toolchain (without parser) took 12500.36 ms. Allocated memory was 142.1 MB in the beginning and 326.6 MB in the end (delta: 184.5 MB). Free memory was 105.0 MB in the beginning and 142.9 MB in the end (delta: -37.9 MB). Peak memory consumption was 146.6 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:52,617 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 14:28:52,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.62 ms. Allocated memory was 142.1 MB in the beginning and 203.9 MB in the end (delta: 61.9 MB). Free memory was 104.4 MB in the beginning and 182.4 MB in the end (delta: -78.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:52,626 INFO L168 Benchmark]: Boogie Preprocessor took 56.36 ms. Allocated memory is still 203.9 MB. Free memory was 182.4 MB in the beginning and 179.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:52,627 INFO L168 Benchmark]: RCFGBuilder took 695.41 ms. Allocated memory is still 203.9 MB. Free memory was 179.9 MB in the beginning and 148.6 MB in the end (delta: 31.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:52,628 INFO L168 Benchmark]: TraceAbstraction took 11265.64 ms. Allocated memory was 203.9 MB in the beginning and 326.6 MB in the end (delta: 122.7 MB). Free memory was 147.9 MB in the beginning and 142.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 127.7 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:52,640 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 474.62 ms. Allocated memory was 142.1 MB in the beginning and 203.9 MB in the end (delta: 61.9 MB). Free memory was 104.4 MB in the beginning and 182.4 MB in the end (delta: -78.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.36 ms. Allocated memory is still 203.9 MB. Free memory was 182.4 MB in the beginning and 179.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 695.41 ms. Allocated memory is still 203.9 MB. Free memory was 179.9 MB in the beginning and 148.6 MB in the end (delta: 31.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11265.64 ms. Allocated memory was 203.9 MB in the beginning and 326.6 MB in the end (delta: 122.7 MB). Free memory was 147.9 MB in the beginning and 142.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 127.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 103, overapproximation of bitwiseAnd at line 101. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L231] CALL, EXPR base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] RET, EXPR base2flt(0, 0) [L231] zero = base2flt(0, 0) [L232] CALL, EXPR base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND TRUE m >= 1U << 25U [L54] COND TRUE e >= 127 [L55] __retres4 = 4294967295U [L70] return (__retres4); [L232] RET, EXPR base2flt(ma, ea) [L232] a = base2flt(ma, ea) [L233] CALL, EXPR base2flt(mb, eb) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] RET, EXPR base2flt(mb, eb) [L233] b = base2flt(mb, eb) [L234] CALL addflt(a, b) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND FALSE !(a < b) [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L104] CALL __VERIFIER_assert(ea >= eb) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 169 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.1s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 773 SDtfs, 421 SDslu, 6888 SDs, 0 SdLazy, 710 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 155 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 515 NumberOfCodeBlocks, 515 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 420 ConstructedInterpolants, 0 QuantifiedInterpolants, 116866 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 124/133 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...