/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:37:29,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:37:29,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:37:29,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:37:29,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:37:29,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:37:29,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:37:29,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:37:29,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:37:29,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:37:29,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:37:29,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:37:29,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:37:29,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:37:29,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:37:29,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:37:29,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:37:29,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:37:29,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:37:29,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:37:29,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:37:29,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:37:29,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:37:29,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:37:29,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:37:29,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:37:29,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:37:29,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:37:29,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:37:29,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:37:29,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:37:29,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:37:29,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:37:29,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:37:29,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:37:29,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:37:29,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:37:29,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:37:29,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:37:29,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:37:29,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:37:29,476 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 [2020-10-28 09:37:29,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:37:29,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:37:29,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:37:29,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:37:29,506 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:37:29,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:37:29,507 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:37:29,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:37:29,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:37:29,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:37:29,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:37:29,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:37:29,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:37:29,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:37:29,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:37:29,509 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:37:29,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:37:29,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:37:29,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:37:29,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:37:29,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:37:29,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:37:29,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:37:29,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:37:29,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:37:29,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:37:29,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:37:29,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:37:29,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:37:29,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:37:29,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:37:29,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:37:29,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:37:29,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:37:29,923 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:37:29,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c [2020-10-28 09:37:30,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97f67f89d/c1e532ca633743c5930b5549f51d2aa6/FLAG63bf9b679 [2020-10-28 09:37:30,653 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:37:30,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_1-3a.c.cil.c [2020-10-28 09:37:30,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97f67f89d/c1e532ca633743c5930b5549f51d2aa6/FLAG63bf9b679 [2020-10-28 09:37:30,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97f67f89d/c1e532ca633743c5930b5549f51d2aa6 [2020-10-28 09:37:30,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:37:31,008 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:37:31,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:37:31,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:37:31,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:37:31,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:37:30" (1/1) ... [2020-10-28 09:37:31,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c601333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:31, skipping insertion in model container [2020-10-28 09:37:31,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:37:30" (1/1) ... [2020-10-28 09:37:31,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:37:31,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:37:31,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:37:31,425 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:37:31,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:37:31,493 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:37:31,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:31 WrapperNode [2020-10-28 09:37:31,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:37:31,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:37:31,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:37:31,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:37:31,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:31" (1/1) ... [2020-10-28 09:37:31,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:31" (1/1) ... [2020-10-28 09:37:31,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:31" (1/1) ... [2020-10-28 09:37:31,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:31" (1/1) ... [2020-10-28 09:37:31,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:31" (1/1) ... [2020-10-28 09:37:31,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:31" (1/1) ... [2020-10-28 09:37:31,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:31" (1/1) ... [2020-10-28 09:37:31,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:37:31,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:37:31,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:37:31,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:37:31,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:31" (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 [2020-10-28 09:37:31,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:37:31,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:37:31,656 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:37:31,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:37:31,656 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-28 09:37:31,656 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-28 09:37:31,656 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-28 09:37:31,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:37:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:37:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:37:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:37:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:37:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 09:37:31,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-28 09:37:31,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:37:31,658 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-28 09:37:31,658 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-28 09:37:31,658 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-28 09:37:31,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:37:31,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:37:31,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:37:31,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:37:31,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:37:31,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:37:31,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:37:32,284 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:37:32,284 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 09:37:32,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:32 BoogieIcfgContainer [2020-10-28 09:37:32,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:37:32,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:37:32,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:37:32,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:37:32,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:37:30" (1/3) ... [2020-10-28 09:37:32,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ad50fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:37:32, skipping insertion in model container [2020-10-28 09:37:32,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:31" (2/3) ... [2020-10-28 09:37:32,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ad50fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:37:32, skipping insertion in model container [2020-10-28 09:37:32,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:32" (3/3) ... [2020-10-28 09:37:32,311 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-10-28 09:37:32,325 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:37:32,331 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:37:32,345 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:37:32,398 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:37:32,399 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:37:32,399 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:37:32,399 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:37:32,399 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:37:32,399 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:37:32,399 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:37:32,399 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:37:32,428 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-10-28 09:37:32,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 09:37:32,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:32,439 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, 1, 1, 1, 1] [2020-10-28 09:37:32,439 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:32,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:32,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1863629501, now seen corresponding path program 1 times [2020-10-28 09:37:32,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:32,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523900109] [2020-10-28 09:37:32,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:32,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:33,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:33,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:33,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:37,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 09:37:37,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:37:37,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:37:37,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:37,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:37,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:37:37,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 09:37:37,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 09:37:37,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 09:37:37,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:37,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:37,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:37,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:37,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:37:37,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:37,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:37,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:37,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:37,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:37,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:37,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:37,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:37,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:37,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:37,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 09:37:37,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:37,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:37,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:37,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:37,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:37,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:37,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:37,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:37,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:37,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:37,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:37:37,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:37,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:37,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:37,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:37,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:37:37,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:37,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 09:37:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:37,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:37,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:37,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:37,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:37,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:37:37,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:37,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:37,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:37:37,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:37:37,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523900109] [2020-10-28 09:37:37,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:37,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:37:37,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555858116] [2020-10-28 09:37:37,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:37:37,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:37,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:37:37,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:37:37,979 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 7 states. [2020-10-28 09:37:38,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:38,949 INFO L93 Difference]: Finished difference Result 198 states and 322 transitions. [2020-10-28 09:37:38,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:37:38,951 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-10-28 09:37:38,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:38,964 INFO L225 Difference]: With dead ends: 198 [2020-10-28 09:37:38,964 INFO L226 Difference]: Without dead ends: 113 [2020-10-28 09:37:38,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:37:38,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-28 09:37:39,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 88. [2020-10-28 09:37:39,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-28 09:37:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 129 transitions. [2020-10-28 09:37:39,033 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 129 transitions. Word has length 38 [2020-10-28 09:37:39,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:39,033 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 129 transitions. [2020-10-28 09:37:39,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:37:39,034 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 129 transitions. [2020-10-28 09:37:39,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 09:37:39,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:39,037 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:39,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:37:39,037 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:39,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:39,038 INFO L82 PathProgramCache]: Analyzing trace with hash 911802531, now seen corresponding path program 1 times [2020-10-28 09:37:39,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:39,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141868249] [2020-10-28 09:37:39,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:39,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:39,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:39,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:39,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:41,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:41,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 09:37:41,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:37:41,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2482 [2020-10-28 09:37:41,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:41,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:41,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:37:41,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 09:37:41,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:37:41,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:41,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:41,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:41,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:41,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:41,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:41,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:41,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:41,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:41,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:41,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:41,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:41,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:41,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:41,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:41,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:41,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:41,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:41,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:37:41,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:41,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:41,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:41,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:41,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:41,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:41,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:41,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:41,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:41,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:41,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:41,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 09:37:41,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:41,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:41,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:41,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 09:37:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:41,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:41,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:41,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:41,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:41,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:37:41,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:41,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:37:41,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:37:41,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141868249] [2020-10-28 09:37:41,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:41,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:37:41,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26855489] [2020-10-28 09:37:41,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:37:41,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:41,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:37:41,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:37:41,763 INFO L87 Difference]: Start difference. First operand 88 states and 129 transitions. Second operand 10 states. [2020-10-28 09:37:43,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:43,017 INFO L93 Difference]: Finished difference Result 197 states and 296 transitions. [2020-10-28 09:37:43,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:37:43,017 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-28 09:37:43,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:43,020 INFO L225 Difference]: With dead ends: 197 [2020-10-28 09:37:43,020 INFO L226 Difference]: Without dead ends: 146 [2020-10-28 09:37:43,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:37:43,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-28 09:37:43,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 135. [2020-10-28 09:37:43,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-28 09:37:43,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 199 transitions. [2020-10-28 09:37:43,047 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 199 transitions. Word has length 42 [2020-10-28 09:37:43,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:43,048 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 199 transitions. [2020-10-28 09:37:43,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:37:43,048 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 199 transitions. [2020-10-28 09:37:43,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 09:37:43,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:43,051 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:43,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:37:43,051 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:43,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:43,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1675692643, now seen corresponding path program 1 times [2020-10-28 09:37:43,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:43,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579266609] [2020-10-28 09:37:43,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:43,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:43,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:43,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:43,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:43,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:43,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:46,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:46,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 09:37:46,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:37:46,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3636 [2020-10-28 09:37:46,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:46,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:46,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:37:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 09:37:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:37:46,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:46,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:46,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:46,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:46,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:46,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:46,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:37:46,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:46,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:46,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:46,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:46,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:46,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:46,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:46,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:46,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:46,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:46,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:46,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:46,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:46,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:46,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:46,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:46,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:46,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:46,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:46,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:46,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:46,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:46,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:46,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:37:46,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:46,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:46,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:37:46,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 09:37:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:46,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:46,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:46,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:46,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:46,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:37:46,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:46,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:37:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:37:46,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:37:46,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579266609] [2020-10-28 09:37:46,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:37:46,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:37:46,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746416079] [2020-10-28 09:37:46,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:37:46,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:46,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:37:46,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:37:46,881 INFO L87 Difference]: Start difference. First operand 135 states and 199 transitions. Second operand 10 states. [2020-10-28 09:37:47,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:47,999 INFO L93 Difference]: Finished difference Result 181 states and 262 transitions. [2020-10-28 09:37:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:37:47,999 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-28 09:37:48,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:48,002 INFO L225 Difference]: With dead ends: 181 [2020-10-28 09:37:48,002 INFO L226 Difference]: Without dead ends: 140 [2020-10-28 09:37:48,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:37:48,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-28 09:37:48,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 125. [2020-10-28 09:37:48,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-28 09:37:48,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 182 transitions. [2020-10-28 09:37:48,024 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 182 transitions. Word has length 42 [2020-10-28 09:37:48,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:48,024 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 182 transitions. [2020-10-28 09:37:48,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:37:48,024 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 182 transitions. [2020-10-28 09:37:48,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 09:37:48,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:48,027 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:48,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:37:48,027 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:48,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:48,028 INFO L82 PathProgramCache]: Analyzing trace with hash -825975016, now seen corresponding path program 1 times [2020-10-28 09:37:48,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:48,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976450167] [2020-10-28 09:37:48,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:48,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:48,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:48,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:48,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 09:37:48,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:37:48,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-28 09:37:48,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:48,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:48,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:37:48,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 09:37:48,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:37:48,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:48,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:37:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:48,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:48,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:48,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:37:48,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:48,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:37:48,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:48,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:48,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:48,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:48,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:48,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:37:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:48,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:48,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:48,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:48,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:48,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:48,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:48,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:48,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:48,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:48,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:48,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:48,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:37:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:48,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:48,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:48,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 09:37:48,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:37:48,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:48,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:37:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:37:48,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:48,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 09:37:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:37:48,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:37:48,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:37:48,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:37:48,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:37:48,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:37:48,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:37:48,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:37:48,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:37:48,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:37:48,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:37:48,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:37:48,589 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:37:48,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976450167] [2020-10-28 09:37:48,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:37:48,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 09:37:48,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206782374] [2020-10-28 09:37:48,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:37:48,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:37:48,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:37:48,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:37:48,592 INFO L87 Difference]: Start difference. First operand 125 states and 182 transitions. Second operand 9 states. [2020-10-28 09:37:49,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:37:49,442 INFO L93 Difference]: Finished difference Result 267 states and 391 transitions. [2020-10-28 09:37:49,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:37:49,442 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-28 09:37:49,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:37:49,445 INFO L225 Difference]: With dead ends: 267 [2020-10-28 09:37:49,445 INFO L226 Difference]: Without dead ends: 199 [2020-10-28 09:37:49,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:37:49,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-28 09:37:49,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2020-10-28 09:37:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-28 09:37:49,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 276 transitions. [2020-10-28 09:37:49,474 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 276 transitions. Word has length 46 [2020-10-28 09:37:49,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:37:49,474 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 276 transitions. [2020-10-28 09:37:49,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:37:49,475 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 276 transitions. [2020-10-28 09:37:49,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 09:37:49,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:37:49,477 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:37:49,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:37:49,478 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:37:49,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:37:49,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1460889539, now seen corresponding path program 2 times [2020-10-28 09:37:49,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:37:49,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194463167] [2020-10-28 09:37:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:37:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 09:37:49,514 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 09:37:49,514 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:37:49,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:37:49,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:37:49 BoogieIcfgContainer [2020-10-28 09:37:49,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:37:49,564 INFO L168 Benchmark]: Toolchain (without parser) took 18560.27 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 125.5 MB in the beginning and 278.4 MB in the end (delta: -152.9 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:49,565 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:37:49,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 481.21 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 112.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:49,568 INFO L168 Benchmark]: Boogie Preprocessor took 62.09 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 110.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:49,571 INFO L168 Benchmark]: RCFGBuilder took 731.57 ms. Allocated memory is still 151.0 MB. Free memory was 110.0 MB in the beginning and 113.8 MB in the end (delta: -3.8 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB. [2020-10-28 09:37:49,577 INFO L168 Benchmark]: TraceAbstraction took 17267.44 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 113.3 MB in the beginning and 278.4 MB in the end (delta: -165.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:37:49,582 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 481.21 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 112.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.09 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 110.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 731.57 ms. Allocated memory is still 151.0 MB. Free memory was 110.0 MB in the beginning and 113.8 MB in the end (delta: -3.8 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 17267.44 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 113.3 MB in the beginning and 278.4 MB in the end (delta: -165.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L243] CALL, EXPR base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] RET, EXPR base2flt(0, 0) [L243] zero = base2flt(0, 0) [L244] CALL, EXPR base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L244] RET, EXPR base2flt(ma, ea) [L244] a = base2flt(ma, ea) [L245] CALL, EXPR base2flt(mb, eb) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L245] RET, EXPR base2flt(mb, eb) [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [L268] CALL addflt(a, b) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND TRUE a < b [L87] tmp = a [L88] a = b [L89] b = tmp [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L106] CALL __VERIFIER_assert(ea >= eb) [L8] COND TRUE !(cond) [L9] CALL reach_error() [L3] __assert_fail("0", "soft_float_1-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 98 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.1s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 406 SDtfs, 710 SDslu, 398 SDs, 0 SdLazy, 2682 SolverSat, 133 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 55 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 22934 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 48/60 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...