/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=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:17:08,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:17:08,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:17:08,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:17:08,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:17:08,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:17:08,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:17:08,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:17:08,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:17:08,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:17:08,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:17:08,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:17:08,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:17:08,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:17:08,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:17:08,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:17:08,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:17:08,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:17:08,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:17:08,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:17:08,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:17:08,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:17:08,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:17:08,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:17:08,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:17:08,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:17:08,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:17:08,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:17:08,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:17:08,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:17:08,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:17:08,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:17:08,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:17:08,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:17:08,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:17:08,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:17:08,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:17:08,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:17:08,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:17:08,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:17:08,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:17:08,481 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 10:17:08,508 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:17:08,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:17:08,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:17:08,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:17:08,510 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:17:08,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:17:08,511 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:17:08,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:17:08,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:17:08,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:17:08,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:17:08,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:17:08,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:17:08,512 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:17:08,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:17:08,512 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:17:08,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:17:08,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:17:08,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:17:08,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:17:08,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:17:08,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:17:08,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:17:08,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:17:08,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:17:08,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:17:08,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:17:08,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:17:08,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:17:08,515 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:17:09,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:17:09,043 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:17:09,047 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:17:09,049 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:17:09,050 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:17:09,051 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2020-09-25 10:17:09,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8af67521c/3352f5c19bce4c0db7eaea32747dd99a/FLAG12d11d929 [2020-09-25 10:17:09,673 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:17:09,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2020-09-25 10:17:09,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8af67521c/3352f5c19bce4c0db7eaea32747dd99a/FLAG12d11d929 [2020-09-25 10:17:10,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8af67521c/3352f5c19bce4c0db7eaea32747dd99a [2020-09-25 10:17:10,022 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:17:10,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:17:10,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:17:10,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:17:10,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:17:10,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@df746a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10, skipping insertion in model container [2020-09-25 10:17:10,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:17:10,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:17:10,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:17:10,365 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:17:10,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:17:10,415 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:17:10,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10 WrapperNode [2020-09-25 10:17:10,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:17:10,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:17:10,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:17:10,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:17:10,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:17:10,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:17:10,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:17:10,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:17:10,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (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 10:17:10,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:17:10,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:17:10,631 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 10:17:10,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 10:17:10,631 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:17:10,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:17:10,632 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:17:10,632 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 10:17:10,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:17:10,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 10:17:10,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:17:10,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 10:17:10,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:17:10,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:17:10,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:17:10,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:17:10,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:17:10,984 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:17:10,984 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 10:17:10,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:17:10 BoogieIcfgContainer [2020-09-25 10:17:10,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:17:10,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:17:10,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:17:10,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:17:10,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:17:10" (1/3) ... [2020-09-25 10:17:10,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d39c320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:17:10, skipping insertion in model container [2020-09-25 10:17:10,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (2/3) ... [2020-09-25 10:17:10,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d39c320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:17:10, skipping insertion in model container [2020-09-25 10:17:10,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:17:10" (3/3) ... [2020-09-25 10:17:11,001 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2020-09-25 10:17:11,012 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:17:11,022 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:17:11,043 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:17:11,073 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:17:11,074 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:17:11,074 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:17:11,074 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:17:11,074 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:17:11,074 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:17:11,075 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:17:11,075 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:17:11,096 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-09-25 10:17:11,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 10:17:11,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:11,104 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:17:11,104 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:11,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:11,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1727331883, now seen corresponding path program 1 times [2020-09-25 10:17:11,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:11,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292514076] [2020-09-25 10:17:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:11,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:11,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:12,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:12,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 10:17:12,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:12,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 920 [2020-09-25 10:17:12,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:12,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:12,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:17:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:17:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:17:12,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:17:12,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:12,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:12,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:12,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:17:12,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:12,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:12,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:12,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:12,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:12,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:12,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:12,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:12,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 10:17:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:12,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:12,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:12,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:12,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:17:12,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:12,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:17:12,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:12,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 10:17:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:12,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:12,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:12,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:12,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:12,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:17:12,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:12,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:12,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:17:12,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:12,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:17:12,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:12,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 10:17:12,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292514076] [2020-09-25 10:17:12,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:12,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 10:17:12,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348714879] [2020-09-25 10:17:12,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:17:12,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:12,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:17:12,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:17:12,571 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 9 states. [2020-09-25 10:17:13,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:13,008 INFO L93 Difference]: Finished difference Result 137 states and 170 transitions. [2020-09-25 10:17:13,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:17:13,010 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-25 10:17:13,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:13,024 INFO L225 Difference]: With dead ends: 137 [2020-09-25 10:17:13,024 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 10:17:13,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:17:13,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 10:17:13,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2020-09-25 10:17:13,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 10:17:13,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-09-25 10:17:13,086 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 30 [2020-09-25 10:17:13,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:13,086 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-09-25 10:17:13,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:17:13,087 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-09-25 10:17:13,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 10:17:13,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:13,089 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:17:13,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:17:13,090 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:13,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:13,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1086220015, now seen corresponding path program 1 times [2020-09-25 10:17:13,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:13,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499173888] [2020-09-25 10:17:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:13,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:13,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:13,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:17:13,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:13,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 10:17:13,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:13,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:13,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:13,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:17:13,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:17:13,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:13,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:13,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:13,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:13,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:17:13,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:13,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:17:13,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:13,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:13,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:13,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:13,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:13,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:13,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 10:17:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:13,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:13,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:13,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:13,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:13,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:17:13,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:13,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:13,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:13,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:13,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 10:17:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:13,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:13,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:13,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:13,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:13,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:17:13,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:13,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:13,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:13,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:13,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:13,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 10:17:13,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499173888] [2020-09-25 10:17:13,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:13,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:17:13,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656879214] [2020-09-25 10:17:13,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:17:13,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:13,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:17:13,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:17:13,307 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 4 states. [2020-09-25 10:17:13,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:13,437 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2020-09-25 10:17:13,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 10:17:13,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-25 10:17:13,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:13,440 INFO L225 Difference]: With dead ends: 91 [2020-09-25 10:17:13,441 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 10:17:13,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:17:13,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 10:17:13,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2020-09-25 10:17:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 10:17:13,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-25 10:17:13,456 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 34 [2020-09-25 10:17:13,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:13,456 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-25 10:17:13,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:17:13,456 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-25 10:17:13,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 10:17:13,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:13,459 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:13,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:17:13,459 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:13,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:13,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1811286385, now seen corresponding path program 1 times [2020-09-25 10:17:13,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:13,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56391537] [2020-09-25 10:17:13,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:13,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:13,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:14,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:14,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:18,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 10:17:18,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:17:18,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 10:17:18,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:18,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:17:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 10:17:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:17:18,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:18,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:18,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:18,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:17:18,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:18,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:17:18,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:18,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:18,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:18,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:18,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:18,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:17:18,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 10:17:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:18,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:18,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:18,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:18,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:17:18,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:18,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:18,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:18,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:18,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:18,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:18,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 10:17:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:18,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:18,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:18,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:18,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:17:18,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:18,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:17:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:18,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:17:18,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:18,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 10:17:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:18,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:18,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:18,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:18,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:17:18,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:18,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:18,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:18,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:18,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:18,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:18,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 10:17:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:18,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:18,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:18,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:17:18,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:18,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:17:18,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:18,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:18,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:17:18,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:18,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:17:18,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 10:17:18,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56391537] [2020-09-25 10:17:18,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:17:18,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:17:18,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200257402] [2020-09-25 10:17:18,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:17:18,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:18,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:17:18,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:17:18,831 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 12 states. [2020-09-25 10:17:19,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:19,553 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2020-09-25 10:17:19,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 10:17:19,553 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-25 10:17:19,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:19,555 INFO L225 Difference]: With dead ends: 84 [2020-09-25 10:17:19,555 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 10:17:19,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:17:19,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 10:17:19,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 59. [2020-09-25 10:17:19,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 10:17:19,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-09-25 10:17:19,567 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 52 [2020-09-25 10:17:19,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:19,568 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-09-25 10:17:19,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:17:19,568 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-09-25 10:17:19,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 10:17:19,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:19,570 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:19,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:17:19,570 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:19,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:19,571 INFO L82 PathProgramCache]: Analyzing trace with hash 2082234165, now seen corresponding path program 1 times [2020-09-25 10:17:19,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:19,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947030407] [2020-09-25 10:17:19,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:19,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:20,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:22,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:22,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 10:17:22,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:17:22,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2620 [2020-09-25 10:17:22,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:22,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:22,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:17:22,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 10:17:22,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:17:22,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:23,023 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 49 [2020-09-25 10:17:36,465 WARN L193 SmtUtils]: Spent 13.40 s on a formula simplification. DAG size of input: 139 DAG size of output: 87 [2020-09-25 10:17:43,685 WARN L193 SmtUtils]: Spent 7.16 s on a formula simplification. DAG size of input: 147 DAG size of output: 100 [2020-09-25 10:17:49,280 WARN L193 SmtUtils]: Spent 5.52 s on a formula simplification. DAG size of input: 256 DAG size of output: 102 [2020-09-25 10:17:54,222 WARN L193 SmtUtils]: Spent 2.81 s on a formula simplification. DAG size of input: 129 DAG size of output: 93 [2020-09-25 10:18:07,501 WARN L193 SmtUtils]: Spent 13.21 s on a formula simplification. DAG size of input: 134 DAG size of output: 87 [2020-09-25 10:18:14,619 WARN L193 SmtUtils]: Spent 6.99 s on a formula simplification. DAG size of input: 123 DAG size of output: 97 [2020-09-25 10:18:14,876 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-09-25 10:18:15,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:18:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:15,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:15,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:15,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:18:15,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:15,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:18:15,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:15,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:15,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:15,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:15,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:15,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-25 10:18:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:15,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:15,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:15,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:15,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:15,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:18:15,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:15,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:18:15,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-25 10:18:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:15,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:15,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:15,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:15,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:15,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:18:15,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:15,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:15,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:18:15,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:15,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:18:15,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:15,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 10:18:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:15,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:15,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:15,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:15,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:15,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:18:15,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:15,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:15,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:18:15,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:15,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:18:15,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:18:15,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 10:18:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:18:15,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:18:15,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:18:15,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 10:18:15,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:18:15,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-09-25 10:18:15,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:18:15,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:18:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:18:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:18:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:18:15,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:18:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 10:18:16,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947030407] [2020-09-25 10:18:16,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:18:16,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-25 10:18:16,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472874216] [2020-09-25 10:18:16,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 10:18:16,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:18:16,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 10:18:16,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=257, Unknown=1, NotChecked=0, Total=306 [2020-09-25 10:18:16,166 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 18 states.