/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=0.2 --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 11:05:44,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:05:44,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:05:44,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:05:44,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:05:44,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:05:44,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:05:44,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:05:44,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:05:44,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:05:44,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:05:44,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:05:44,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:05:44,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:05:44,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:05:44,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:05:44,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:05:44,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:05:44,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:05:44,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:05:44,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:05:44,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:05:44,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:05:44,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:05:44,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:05:44,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:05:44,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:05:44,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:05:44,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:05:44,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:05:44,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:05:44,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:05:44,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:05:44,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:05:44,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:05:44,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:05:44,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:05:44,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:05:44,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:05:44,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:05:44,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:05:44,434 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 11:05:44,467 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:05:44,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:05:44,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:05:44,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:05:44,469 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:05:44,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:05:44,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:05:44,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:05:44,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:05:44,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:05:44,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:05:44,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:05:44,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:05:44,471 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:05:44,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:05:44,475 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:05:44,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:05:44,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:05:44,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:05:44,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:05:44,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:05:44,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:05:44,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:05:44,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:05:44,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:05:44,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:05:44,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:05:44,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:05:44,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:05:44,482 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:05:45,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:05:45,036 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:05:45,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:05:45,045 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:05:45,046 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:05:45,048 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-25 11:05:45,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7efe8063/ee9997da53fd4b3ca1fe05ff42236f09/FLAG1a03fe037 [2020-09-25 11:05:45,673 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:05:45,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-25 11:05:45,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7efe8063/ee9997da53fd4b3ca1fe05ff42236f09/FLAG1a03fe037 [2020-09-25 11:05:46,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7efe8063/ee9997da53fd4b3ca1fe05ff42236f09 [2020-09-25 11:05:46,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:05:46,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:05:46,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:05:46,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:05:46,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:05:46,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:05:46" (1/1) ... [2020-09-25 11:05:46,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c9ce53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:46, skipping insertion in model container [2020-09-25 11:05:46,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:05:46" (1/1) ... [2020-09-25 11:05:46,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:05:46,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:05:46,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:05:46,500 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:05:46,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:05:46,683 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:05:46,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:46 WrapperNode [2020-09-25 11:05:46,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:05:46,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:05:46,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:05:46,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:05:46,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:46" (1/1) ... [2020-09-25 11:05:46,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:46" (1/1) ... [2020-09-25 11:05:46,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:46" (1/1) ... [2020-09-25 11:05:46,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:46" (1/1) ... [2020-09-25 11:05:46,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:46" (1/1) ... [2020-09-25 11:05:46,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:46" (1/1) ... [2020-09-25 11:05:46,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:46" (1/1) ... [2020-09-25 11:05:46,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:05:46,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:05:46,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:05:46,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:05:46,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:46" (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 11:05:46,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:05:46,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:05:46,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 11:05:46,833 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-25 11:05:46,833 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-25 11:05:46,833 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-25 11:05:46,833 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:05:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:05:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 11:05:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 11:05:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 11:05:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-25 11:05:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-25 11:05:46,835 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-25 11:05:46,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:05:46,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:05:46,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:05:47,487 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:05:47,487 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 11:05:47,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:05:47 BoogieIcfgContainer [2020-09-25 11:05:47,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:05:47,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:05:47,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:05:47,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:05:47,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:05:46" (1/3) ... [2020-09-25 11:05:47,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b101c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:05:47, skipping insertion in model container [2020-09-25 11:05:47,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:46" (2/3) ... [2020-09-25 11:05:47,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b101c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:05:47, skipping insertion in model container [2020-09-25 11:05:47,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:05:47" (3/3) ... [2020-09-25 11:05:47,505 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-09-25 11:05:47,516 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:05:47,527 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:05:47,549 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:05:47,580 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:05:47,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:05:47,580 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:05:47,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:05:47,580 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:05:47,581 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:05:47,581 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:05:47,581 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:05:47,605 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-09-25 11:05:47,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 11:05:47,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:47,618 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 11:05:47,618 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:47,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:47,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1377121462, now seen corresponding path program 1 times [2020-09-25 11:05:47,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:47,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641415204] [2020-09-25 11:05:47,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:47,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:48,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:50,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:50,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:50,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 11:05:50,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:05:50,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2657 [2020-09-25 11:05:50,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:50,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:05:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 11:05:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:05:50,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:05:50,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:05:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:50,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:50,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:50,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:05:50,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:50,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:05:50,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:50,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:50,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:50,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:50,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:50,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:50,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 11:05:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:50,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:50,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:50,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:05:50,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:50,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:05:50,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:50,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:50,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:50,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 11:05:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:50,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:50,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:50,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:05:50,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:50,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:05:50,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:50,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:50,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:05:50,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:50,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:05:50,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:50,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 11:05:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:50,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:50,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:50,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:05:50,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:50,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:05:50,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:50,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:05:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:05:50,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 11:05:51,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641415204] [2020-09-25 11:05:51,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:05:51,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-25 11:05:51,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462469909] [2020-09-25 11:05:51,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:05:51,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:05:51,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:05:51,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:05:51,054 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 15 states. [2020-09-25 11:05:51,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:05:51,497 INFO L93 Difference]: Finished difference Result 281 states and 357 transitions. [2020-09-25 11:05:51,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:05:51,499 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 81 [2020-09-25 11:05:51,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:05:51,517 INFO L225 Difference]: With dead ends: 281 [2020-09-25 11:05:51,517 INFO L226 Difference]: Without dead ends: 168 [2020-09-25 11:05:51,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:05:51,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-09-25 11:05:51,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 144. [2020-09-25 11:05:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-25 11:05:51,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 167 transitions. [2020-09-25 11:05:51,594 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 167 transitions. Word has length 81 [2020-09-25 11:05:51,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:05:51,595 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 167 transitions. [2020-09-25 11:05:51,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:05:51,595 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 167 transitions. [2020-09-25 11:05:51,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 11:05:51,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:51,600 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 11:05:51,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:05:51,601 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:51,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:51,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1823732666, now seen corresponding path program 1 times [2020-09-25 11:05:51,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:51,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170154430] [2020-09-25 11:05:51,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:51,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:51,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:52,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:52,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 11:05:52,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:05:52,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 738 [2020-09-25 11:05:52,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:52,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:52,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:05:52,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 11:05:52,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 11:05:52,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:52,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:05:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:52,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:52,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:52,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:05:52,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:52,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:05:52,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:52,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:52,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:52,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:52,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 11:05:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:52,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:52,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:52,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:05:52,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:52,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:05:52,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:52,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:52,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:52,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:52,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:52,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 11:05:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:52,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:52,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:52,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:05:52,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:52,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:05:52,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:52,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:52,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:05:52,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:52,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:05:52,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:52,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 11:05:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:52,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:52,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:52,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 11:05:52,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:52,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:05:52,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:52,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:52,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:05:52,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:05:52,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 11:05:52,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170154430] [2020-09-25 11:05:52,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:05:52,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:05:52,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665494136] [2020-09-25 11:05:52,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:05:52,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:05:52,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:05:52,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:05:52,584 INFO L87 Difference]: Start difference. First operand 144 states and 167 transitions. Second operand 9 states. [2020-09-25 11:05:52,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:05:52,798 INFO L93 Difference]: Finished difference Result 286 states and 332 transitions. [2020-09-25 11:05:52,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:05:52,799 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-09-25 11:05:52,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:05:52,803 INFO L225 Difference]: With dead ends: 286 [2020-09-25 11:05:52,803 INFO L226 Difference]: Without dead ends: 227 [2020-09-25 11:05:52,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:05:52,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-09-25 11:05:52,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 205. [2020-09-25 11:05:52,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-25 11:05:52,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2020-09-25 11:05:52,832 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 85 [2020-09-25 11:05:52,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:05:52,833 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2020-09-25 11:05:52,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:05:52,833 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2020-09-25 11:05:52,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 11:05:52,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:52,838 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 11:05:52,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:05:52,838 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:52,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:52,839 INFO L82 PathProgramCache]: Analyzing trace with hash 646909882, now seen corresponding path program 2 times [2020-09-25 11:05:52,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:52,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711998124] [2020-09-25 11:05:52,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:52,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:53,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:53,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:53,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 11:05:53,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:05:53,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-09-25 11:05:53,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:53,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:05:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 11:05:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:05:53,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:54,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:05:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:54,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:54,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:54,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:05:54,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:54,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:05:54,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:54,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:54,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:05:54,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 11:05:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:54,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:54,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:54,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:05:54,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:54,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:05:54,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:54,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:54,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:54,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:54,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:54,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:54,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 11:05:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:54,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:54,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:54,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 11:05:54,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:54,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:05:54,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:54,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:54,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:05:54,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:54,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:05:54,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:54,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 11:05:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:54,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:54,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:54,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:05:54,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:54,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:05:54,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:54,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:05:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:05:54,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:54,292 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 11:05:54,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711998124] [2020-09-25 11:05:54,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:05:54,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 11:05:54,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643738885] [2020-09-25 11:05:54,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 11:05:54,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:05:54,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 11:05:54,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:05:54,298 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand 17 states. [2020-09-25 11:05:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:05:54,815 INFO L93 Difference]: Finished difference Result 316 states and 371 transitions. [2020-09-25 11:05:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:05:54,816 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 85 [2020-09-25 11:05:54,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:05:54,820 INFO L225 Difference]: With dead ends: 316 [2020-09-25 11:05:54,820 INFO L226 Difference]: Without dead ends: 257 [2020-09-25 11:05:54,822 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 11:05:54,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-09-25 11:05:54,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 230. [2020-09-25 11:05:54,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-25 11:05:54,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 266 transitions. [2020-09-25 11:05:54,847 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 266 transitions. Word has length 85 [2020-09-25 11:05:54,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:05:54,848 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 266 transitions. [2020-09-25 11:05:54,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 11:05:54,848 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 266 transitions. [2020-09-25 11:05:54,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 11:05:54,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:54,853 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 11:05:54,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:05:54,854 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:54,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:54,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1996302692, now seen corresponding path program 1 times [2020-09-25 11:05:54,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:54,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226910256] [2020-09-25 11:05:54,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:54,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:55,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:55,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-25 11:05:55,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:55,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-25 11:05:55,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:55,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:55,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:05:55,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-25 11:05:55,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:05:55,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:55,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:05:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:55,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:55,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:55,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:05:55,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:55,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:05:55,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:55,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:55,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:55,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:55,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:55,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:55,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 11:05:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:55,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:55,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:55,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:05:55,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:55,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:05:55,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:55,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:55,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:55,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:55,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:55,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:55,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 11:05:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:55,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:55,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:55,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:05:55,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:55,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:05:55,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:55,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:55,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:55,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:55,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:55,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 11:05:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:55,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:55,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:55,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:05:55,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:55,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:05:55,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:55,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:55,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:05:55,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:55,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:05:55,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:55,308 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 11:05:55,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226910256] [2020-09-25 11:05:55,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:05:55,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:05:55,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840640065] [2020-09-25 11:05:55,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:05:55,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:05:55,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:05:55,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:05:55,311 INFO L87 Difference]: Start difference. First operand 230 states and 266 transitions. Second operand 8 states. [2020-09-25 11:05:55,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:05:55,437 INFO L93 Difference]: Finished difference Result 326 states and 379 transitions. [2020-09-25 11:05:55,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:05:55,438 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 86 [2020-09-25 11:05:55,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:05:55,441 INFO L225 Difference]: With dead ends: 326 [2020-09-25 11:05:55,441 INFO L226 Difference]: Without dead ends: 267 [2020-09-25 11:05:55,442 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 11:05:55,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-25 11:05:55,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 224. [2020-09-25 11:05:55,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-25 11:05:55,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 254 transitions. [2020-09-25 11:05:55,458 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 254 transitions. Word has length 86 [2020-09-25 11:05:55,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:05:55,459 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 254 transitions. [2020-09-25 11:05:55,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:05:55,459 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 254 transitions. [2020-09-25 11:05:55,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 11:05:55,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:55,462 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, 1, 1] [2020-09-25 11:05:55,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:05:55,462 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:55,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:55,463 INFO L82 PathProgramCache]: Analyzing trace with hash 808883757, now seen corresponding path program 1 times [2020-09-25 11:05:55,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:55,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864874469] [2020-09-25 11:05:55,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:55,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:55,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:56,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:56,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 11:05:56,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:05:56,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1276 [2020-09-25 11:05:56,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:56,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:56,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:05:56,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 11:05:56,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 11:05:56,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:57,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:05:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:57,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:57,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:57,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:05:57,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:57,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:05:57,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:57,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:57,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:57,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:57,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 11:05:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:57,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:57,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:05:57,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:57,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:05:57,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:57,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:57,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:57,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 11:05:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:57,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:57,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:57,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:05:57,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:57,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:05:57,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:57,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:57,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:05:57,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:57,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:05:57,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:57,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 11:05:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:57,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:57,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:57,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 11:05:57,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 11:05:57,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:57,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:05:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:05:57,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:57,491 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 11:05:57,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864874469] [2020-09-25 11:05:57,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:05:57,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 11:05:57,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419224373] [2020-09-25 11:05:57,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 11:05:57,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:05:57,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 11:05:57,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:05:57,494 INFO L87 Difference]: Start difference. First operand 224 states and 254 transitions. Second operand 20 states. [2020-09-25 11:05:58,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:05:58,117 INFO L93 Difference]: Finished difference Result 359 states and 415 transitions. [2020-09-25 11:05:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:05:58,118 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2020-09-25 11:05:58,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:05:58,121 INFO L225 Difference]: With dead ends: 359 [2020-09-25 11:05:58,121 INFO L226 Difference]: Without dead ends: 273 [2020-09-25 11:05:58,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2020-09-25 11:05:58,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-09-25 11:05:58,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 249. [2020-09-25 11:05:58,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-25 11:05:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 282 transitions. [2020-09-25 11:05:58,137 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 282 transitions. Word has length 88 [2020-09-25 11:05:58,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:05:58,137 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 282 transitions. [2020-09-25 11:05:58,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 11:05:58,137 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 282 transitions. [2020-09-25 11:05:58,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 11:05:58,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:58,139 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, 1, 1, 1] [2020-09-25 11:05:58,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:05:58,140 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:58,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:58,140 INFO L82 PathProgramCache]: Analyzing trace with hash -289139437, now seen corresponding path program 1 times [2020-09-25 11:05:58,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:58,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998324778] [2020-09-25 11:05:58,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:58,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:58,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:58,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 11:05:58,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:58,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-09-25 11:05:58,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:58,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:58,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:05:58,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 11:05:58,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 11:05:58,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:05:58,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:05:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:58,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:58,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:58,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:05:58,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:05:58,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:58,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:58,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:58,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 11:05:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:58,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:58,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:58,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:05:58,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:58,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:05:58,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:58,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:58,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:58,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 11:05:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:58,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:58,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:58,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:05:58,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:58,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:05:58,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:58,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:05:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:58,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:05:58,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:58,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 11:05:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:58,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:58,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:58,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:05:58,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:58,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:05:58,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:58,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:05:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:05:58,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 11:05:58,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998324778] [2020-09-25 11:05:58,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:05:58,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:05:58,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32360674] [2020-09-25 11:05:58,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:05:58,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:05:58,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:05:58,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:05:58,683 INFO L87 Difference]: Start difference. First operand 249 states and 282 transitions. Second operand 10 states. [2020-09-25 11:05:58,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:05:58,929 INFO L93 Difference]: Finished difference Result 327 states and 372 transitions. [2020-09-25 11:05:58,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:05:58,930 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-25 11:05:58,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:05:58,933 INFO L225 Difference]: With dead ends: 327 [2020-09-25 11:05:58,933 INFO L226 Difference]: Without dead ends: 243 [2020-09-25 11:05:58,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:05:58,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-09-25 11:05:58,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 226. [2020-09-25 11:05:58,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-25 11:05:58,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 252 transitions. [2020-09-25 11:05:58,949 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 252 transitions. Word has length 89 [2020-09-25 11:05:58,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:05:58,950 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 252 transitions. [2020-09-25 11:05:58,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:05:58,950 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 252 transitions. [2020-09-25 11:05:58,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 11:05:58,952 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:58,953 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 11:05:58,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:05:58,953 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:58,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:58,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1795206334, now seen corresponding path program 3 times [2020-09-25 11:05:58,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:58,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532909995] [2020-09-25 11:05:58,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:59,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:59,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:59,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 11:05:59,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:59,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-09-25 11:05:59,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:59,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:05:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 11:05:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:05:59,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:00,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:00,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:00,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:00,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:00,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:00,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:06:00,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:00,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:00,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:00,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:00,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:00,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:00,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 11:06:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:00,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:00,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:00,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 11:06:00,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:00,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:06:00,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:00,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:00,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:00,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 11:06:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:00,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:00,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:00,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 11:06:00,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:00,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 11:06:00,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:00,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:00,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:00,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:06:00,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:00,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 11:06:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:00,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:00,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:00,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 11:06:00,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:00,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 11:06:00,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:00,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:06:00,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:00,224 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 11:06:00,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532909995] [2020-09-25 11:06:00,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:06:00,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-25 11:06:00,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446303630] [2020-09-25 11:06:00,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:06:00,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:00,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:06:00,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:06:00,228 INFO L87 Difference]: Start difference. First operand 226 states and 252 transitions. Second operand 15 states. [2020-09-25 11:06:00,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:00,735 INFO L93 Difference]: Finished difference Result 362 states and 418 transitions. [2020-09-25 11:06:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:06:00,736 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-09-25 11:06:00,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:00,738 INFO L225 Difference]: With dead ends: 362 [2020-09-25 11:06:00,738 INFO L226 Difference]: Without dead ends: 303 [2020-09-25 11:06:00,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2020-09-25 11:06:00,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-09-25 11:06:00,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 276. [2020-09-25 11:06:00,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-09-25 11:06:00,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 311 transitions. [2020-09-25 11:06:00,753 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 311 transitions. Word has length 89 [2020-09-25 11:06:00,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:00,754 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 311 transitions. [2020-09-25 11:06:00,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:06:00,754 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 311 transitions. [2020-09-25 11:06:00,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 11:06:00,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:00,756 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 11:06:00,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:06:00,757 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:00,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:00,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1839352304, now seen corresponding path program 1 times [2020-09-25 11:06:00,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:00,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565455381] [2020-09-25 11:06:00,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:06:00,780 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:06:00,780 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:06:00,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:06:00,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:06:00 BoogieIcfgContainer [2020-09-25 11:06:00,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:06:00,817 INFO L168 Benchmark]: Toolchain (without parser) took 14793.36 ms. Allocated memory was 146.8 MB in the beginning and 332.9 MB in the end (delta: 186.1 MB). Free memory was 102.8 MB in the beginning and 111.7 MB in the end (delta: -8.9 MB). Peak memory consumption was 177.2 MB. Max. memory is 7.1 GB. [2020-09-25 11:06:00,818 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-09-25 11:06:00,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.38 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 102.0 MB in the beginning and 178.6 MB in the end (delta: -76.6 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-09-25 11:06:00,819 INFO L168 Benchmark]: Boogie Preprocessor took 54.56 ms. Allocated memory is still 202.4 MB. Free memory was 178.6 MB in the beginning and 176.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-25 11:06:00,820 INFO L168 Benchmark]: RCFGBuilder took 754.82 ms. Allocated memory is still 202.4 MB. Free memory was 176.7 MB in the beginning and 145.3 MB in the end (delta: 31.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:06:00,821 INFO L168 Benchmark]: TraceAbstraction took 13316.83 ms. Allocated memory was 202.4 MB in the beginning and 332.9 MB in the end (delta: 130.5 MB). Free memory was 144.4 MB in the beginning and 111.7 MB in the end (delta: 32.7 MB). Peak memory consumption was 163.2 MB. Max. memory is 7.1 GB. [2020-09-25 11:06:00,826 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 652.38 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 102.0 MB in the beginning and 178.6 MB in the end (delta: -76.6 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.56 ms. Allocated memory is still 202.4 MB. Free memory was 178.6 MB in the beginning and 176.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 754.82 ms. Allocated memory is still 202.4 MB. Free memory was 176.7 MB in the beginning and 145.3 MB in the end (delta: 31.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13316.83 ms. Allocated memory was 202.4 MB in the beginning and 332.9 MB in the end (delta: 130.5 MB). Free memory was 144.4 MB in the beginning and 111.7 MB in the end (delta: 32.7 MB). Peak memory consumption was 163.2 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: 13.2s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1054 SDtfs, 532 SDslu, 11605 SDs, 0 SdLazy, 1267 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred in iteration=7, 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, 7 MinimizatonAttempts, 184 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 693 NumberOfCodeBlocks, 693 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 596 ConstructedInterpolants, 0 QuantifiedInterpolants, 187742 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 169/181 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...