/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:41:10,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:41:10,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:41:10,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:41:10,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:41:10,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:41:10,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:41:10,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:41:10,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:41:10,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:41:10,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:41:10,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:41:10,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:41:10,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:41:10,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:41:10,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:41:10,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:41:10,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:41:10,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:41:10,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:41:10,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:41:10,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:41:10,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:41:10,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:41:10,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:41:10,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:41:10,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:41:10,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:41:10,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:41:10,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:41:10,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:41:10,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:41:10,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:41:10,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:41:10,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:41:10,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:41:10,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:41:10,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:41:10,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:41:10,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:41:10,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:41:10,547 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 13:41:10,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:41:10,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:41:10,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:41:10,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:41:10,572 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:41:10,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:41:10,573 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:41:10,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:41:10,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:41:10,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:41:10,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:41:10,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:41:10,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:41:10,574 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:41:10,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:41:10,575 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:41:10,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:41:10,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:41:10,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:41:10,575 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:41:10,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:41:10,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:41:10,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:41:10,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:41:10,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:41:10,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:41:10,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:41:10,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:41:10,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:41:10,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:41:10,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:41:10,922 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:41:10,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:41:10,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:41:10,932 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:41:10,933 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label29.c [2020-10-12 13:41:11,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3792da388/a4e6b80ff1814557b0568bbb0af4c063/FLAGf3333f60c [2020-10-12 13:41:11,820 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:41:11,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label29.c [2020-10-12 13:41:11,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3792da388/a4e6b80ff1814557b0568bbb0af4c063/FLAGf3333f60c [2020-10-12 13:41:12,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3792da388/a4e6b80ff1814557b0568bbb0af4c063 [2020-10-12 13:41:12,378 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:41:12,380 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:41:12,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:41:12,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:41:12,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:41:12,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:41:12" (1/1) ... [2020-10-12 13:41:12,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@713e8a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:41:12, skipping insertion in model container [2020-10-12 13:41:12,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:41:12" (1/1) ... [2020-10-12 13:41:12,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:41:12,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:41:14,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:41:14,102 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:41:14,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:41:14,820 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:41:14,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:41:14 WrapperNode [2020-10-12 13:41:14,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:41:14,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:41:14,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:41:14,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:41:14,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:41:14" (1/1) ... [2020-10-12 13:41:14,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:41:14" (1/1) ... [2020-10-12 13:41:14,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:41:14" (1/1) ... [2020-10-12 13:41:14,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:41:14" (1/1) ... [2020-10-12 13:41:15,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:41:14" (1/1) ... [2020-10-12 13:41:15,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:41:14" (1/1) ... [2020-10-12 13:41:15,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:41:14" (1/1) ... [2020-10-12 13:41:15,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:41:15,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:41:15,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:41:15,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:41:15,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:41:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:41:15,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:41:15,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:41:15,216 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:41:15,216 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:41:15,217 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:41:15,217 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:41:15,217 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:41:15,217 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:41:15,217 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:41:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:41:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:41:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:41:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:41:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:41:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:41:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:41:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:41:26,465 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:41:26,466 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:41:26,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:41:26 BoogieIcfgContainer [2020-10-12 13:41:26,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:41:26,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:41:26,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:41:26,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:41:26,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:41:12" (1/3) ... [2020-10-12 13:41:26,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4253f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:41:26, skipping insertion in model container [2020-10-12 13:41:26,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:41:14" (2/3) ... [2020-10-12 13:41:26,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4253f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:41:26, skipping insertion in model container [2020-10-12 13:41:26,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:41:26" (3/3) ... [2020-10-12 13:41:26,487 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label29.c [2020-10-12 13:41:26,497 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:41:26,506 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:41:26,520 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:41:26,551 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:41:26,551 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:41:26,552 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:41:26,552 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:41:26,552 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:41:26,552 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:41:26,552 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:41:26,552 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:41:26,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-12 13:41:26,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 13:41:26,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:41:26,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:41:26,600 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:41:26,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:41:26,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1603055809, now seen corresponding path program 1 times [2020-10-12 13:41:26,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:41:26,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637125967] [2020-10-12 13:41:26,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:41:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:26,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:27,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:27,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 13:41:27,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:41:27,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-12 13:41:27,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:41:27,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:41:27,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 13:41:27,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:41:27,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:41:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:27,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:27,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:27,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:41:27,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:41:27,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 13:41:27,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:27,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:41:27,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:41:27,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:41:27,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:41:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:41:27,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637125967] [2020-10-12 13:41:27,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:41:27,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:41:27,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928485364] [2020-10-12 13:41:27,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:41:27,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:41:27,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:41:27,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:41:27,258 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-12 13:41:39,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:41:39,499 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-12 13:41:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:41:39,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-12 13:41:39,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:41:39,540 INFO L225 Difference]: With dead ends: 3152 [2020-10-12 13:41:39,540 INFO L226 Difference]: Without dead ends: 1954 [2020-10-12 13:41:39,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:41:39,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-12 13:41:39,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-12 13:41:39,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-12 13:41:39,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-12 13:41:39,704 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 20 [2020-10-12 13:41:39,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:41:39,705 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-12 13:41:39,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:41:39,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-12 13:41:39,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 13:41:39,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:41:39,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:41:39,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:41:39,710 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:41:39,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:41:39,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1222934038, now seen corresponding path program 1 times [2020-10-12 13:41:39,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:41:39,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591539119] [2020-10-12 13:41:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:41:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:39,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:40,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:40,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:40,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 13:41:40,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:41:40,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 804 [2020-10-12 13:41:40,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:40,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:41:40,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:41:40,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:41:40,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:41:40,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:41:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:40,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:40,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:40,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:41:40,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:41:40,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:41:40,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:40,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:41:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:41:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:41:40,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:41:40,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:41:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:40,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:40,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:40,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:41:40,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:41:40,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-12 13:41:40,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:41:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:41:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:41:40,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:41:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:41:40,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591539119] [2020-10-12 13:41:40,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:41:40,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:41:40,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274616789] [2020-10-12 13:41:41,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:41:41,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:41:41,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:41:41,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:41:41,002 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 7 states. [2020-10-12 13:42:04,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:42:04,424 INFO L93 Difference]: Finished difference Result 5676 states and 9341 transitions. [2020-10-12 13:42:04,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:42:04,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-10-12 13:42:04,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:42:04,445 INFO L225 Difference]: With dead ends: 5676 [2020-10-12 13:42:04,445 INFO L226 Difference]: Without dead ends: 3797 [2020-10-12 13:42:04,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:42:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2020-10-12 13:42:04,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 3698. [2020-10-12 13:42:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2020-10-12 13:42:04,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5552 transitions. [2020-10-12 13:42:04,548 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5552 transitions. Word has length 90 [2020-10-12 13:42:04,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:42:04,548 INFO L479 AbstractCegarLoop]: Abstraction has 3698 states and 5552 transitions. [2020-10-12 13:42:04,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:42:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5552 transitions. [2020-10-12 13:42:04,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 13:42:04,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:42:04,552 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:42:04,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:42:04,553 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:42:04,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:42:04,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1811228731, now seen corresponding path program 1 times [2020-10-12 13:42:04,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:42:04,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054856614] [2020-10-12 13:42:04,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:42:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:04,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:04,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:05,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:05,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:42:05,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:42:05,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-12 13:42:05,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:05,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:42:05,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:42:05,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:42:05,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:42:05,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:42:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:05,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:05,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:05,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:42:05,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:42:05,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:42:05,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:42:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:42:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:42:05,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:42:05,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:42:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:05,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:05,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:05,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:42:05,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:42:05,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-12 13:42:05,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:42:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:42:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:42:05,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:42:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:42:05,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054856614] [2020-10-12 13:42:05,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:42:05,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:42:05,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857065102] [2020-10-12 13:42:05,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:42:05,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:42:05,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:42:05,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:42:05,564 INFO L87 Difference]: Start difference. First operand 3698 states and 5552 transitions. Second operand 7 states. [2020-10-12 13:42:23,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:42:23,226 INFO L93 Difference]: Finished difference Result 8394 states and 12928 transitions. [2020-10-12 13:42:23,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:42:23,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-12 13:42:23,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:42:23,255 INFO L225 Difference]: With dead ends: 8394 [2020-10-12 13:42:23,255 INFO L226 Difference]: Without dead ends: 4702 [2020-10-12 13:42:23,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:42:23,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4702 states. [2020-10-12 13:42:23,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4702 to 4540. [2020-10-12 13:42:23,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4540 states. [2020-10-12 13:42:23,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4540 states to 4540 states and 6160 transitions. [2020-10-12 13:42:23,392 INFO L78 Accepts]: Start accepts. Automaton has 4540 states and 6160 transitions. Word has length 95 [2020-10-12 13:42:23,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:42:23,393 INFO L479 AbstractCegarLoop]: Abstraction has 4540 states and 6160 transitions. [2020-10-12 13:42:23,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:42:23,393 INFO L276 IsEmpty]: Start isEmpty. Operand 4540 states and 6160 transitions. [2020-10-12 13:42:23,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-12 13:42:23,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:42:23,397 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:42:23,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:42:23,398 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:42:23,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:42:23,398 INFO L82 PathProgramCache]: Analyzing trace with hash -80728649, now seen corresponding path program 1 times [2020-10-12 13:42:23,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:42:23,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480122592] [2020-10-12 13:42:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:42:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:23,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:23,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:24,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:24,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:24,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 13:42:24,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:42:24,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 980 [2020-10-12 13:42:24,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:24,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:42:24,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:42:24,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 13:42:24,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:42:24,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:42:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:24,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:24,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:24,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:42:24,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:42:24,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:42:24,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:42:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:42:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:42:24,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:42:24,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:42:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:24,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:24,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:24,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:24,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 13:42:24,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:42:24,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-12 13:42:24,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:42:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:42:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:42:24,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:42:24,871 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:42:24,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480122592] [2020-10-12 13:42:24,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:42:24,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:42:24,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753682856] [2020-10-12 13:42:24,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:42:24,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:42:24,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:42:24,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:42:24,876 INFO L87 Difference]: Start difference. First operand 4540 states and 6160 transitions. Second operand 8 states. [2020-10-12 13:42:52,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:42:52,377 INFO L93 Difference]: Finished difference Result 15374 states and 22045 transitions. [2020-10-12 13:42:52,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:42:52,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-10-12 13:42:52,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:42:52,431 INFO L225 Difference]: With dead ends: 15374 [2020-10-12 13:42:52,432 INFO L226 Difference]: Without dead ends: 10840 [2020-10-12 13:42:52,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 13:42:52,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10840 states. [2020-10-12 13:42:52,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10840 to 10703. [2020-10-12 13:42:52,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10703 states. [2020-10-12 13:42:52,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10703 states to 10703 states and 14223 transitions. [2020-10-12 13:42:52,739 INFO L78 Accepts]: Start accepts. Automaton has 10703 states and 14223 transitions. Word has length 97 [2020-10-12 13:42:52,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:42:52,740 INFO L479 AbstractCegarLoop]: Abstraction has 10703 states and 14223 transitions. [2020-10-12 13:42:52,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:42:52,740 INFO L276 IsEmpty]: Start isEmpty. Operand 10703 states and 14223 transitions. [2020-10-12 13:42:52,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-12 13:42:52,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:42:52,754 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:42:52,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:42:52,755 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:42:52,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:42:52,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1014999839, now seen corresponding path program 1 times [2020-10-12 13:42:52,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:42:52,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937537595] [2020-10-12 13:42:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:42:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:53,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:54,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:54,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-12 13:42:54,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:42:54,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1488 [2020-10-12 13:42:54,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:42:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:42:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 13:42:54,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:42:54,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:42:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:54,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:54,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:54,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:42:54,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:42:54,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:42:54,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:54,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:42:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:42:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:42:54,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:42:54,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:42:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:54,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:54,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:54,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 13:42:54,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:42:54,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-12 13:42:54,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:42:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:42:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 13:42:54,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:42:54,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 13:42:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:54,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:54,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:54,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 13:42:54,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:42:54,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 13:42:54,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:54,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:42:54,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 13:42:54,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:42:54,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:42:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 26 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:42:54,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937537595] [2020-10-12 13:42:54,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:42:54,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:42:54,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892574058] [2020-10-12 13:42:54,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:42:54,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:42:54,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:42:54,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:42:54,941 INFO L87 Difference]: Start difference. First operand 10703 states and 14223 transitions. Second operand 7 states. [2020-10-12 13:43:13,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:43:13,520 INFO L93 Difference]: Finished difference Result 23523 states and 31412 transitions. [2020-10-12 13:43:13,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:43:13,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-10-12 13:43:13,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:43:13,572 INFO L225 Difference]: With dead ends: 23523 [2020-10-12 13:43:13,572 INFO L226 Difference]: Without dead ends: 13629 [2020-10-12 13:43:13,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:43:13,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13629 states. [2020-10-12 13:43:13,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13629 to 13458. [2020-10-12 13:43:13,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13458 states. [2020-10-12 13:43:13,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13458 states to 13458 states and 17505 transitions. [2020-10-12 13:43:13,871 INFO L78 Accepts]: Start accepts. Automaton has 13458 states and 17505 transitions. Word has length 190 [2020-10-12 13:43:13,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:43:13,873 INFO L479 AbstractCegarLoop]: Abstraction has 13458 states and 17505 transitions. [2020-10-12 13:43:13,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:43:13,874 INFO L276 IsEmpty]: Start isEmpty. Operand 13458 states and 17505 transitions. [2020-10-12 13:43:13,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-12 13:43:13,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:43:13,878 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:43:13,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:43:13,878 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:43:13,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:43:13,879 INFO L82 PathProgramCache]: Analyzing trace with hash -2051275850, now seen corresponding path program 1 times [2020-10-12 13:43:13,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:43:13,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132033100] [2020-10-12 13:43:13,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:43:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:13,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:14,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:14,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:16,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:16,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-12 13:43:16,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:43:16,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2128 [2020-10-12 13:43:16,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:43:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:43:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-12 13:43:16,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:43:16,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:43:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:16,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:16,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:16,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:43:16,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:43:16,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:43:16,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:43:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:43:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:43:16,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:43:16,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:43:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:16,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:16,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:16,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:16,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:43:16,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:43:16,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-12 13:43:16,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:43:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:43:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 13:43:16,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:43:16,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 13:43:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:16,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:16,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:16,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 13:43:16,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:43:16,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 13:43:16,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:43:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:43:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 13:43:16,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:43:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 27 proven. 77 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 13:43:16,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132033100] [2020-10-12 13:43:16,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:43:16,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:43:16,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403490370] [2020-10-12 13:43:16,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:43:16,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:43:16,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:43:16,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:43:16,811 INFO L87 Difference]: Start difference. First operand 13458 states and 17505 transitions. Second operand 8 states. [2020-10-12 13:43:35,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:43:35,557 INFO L93 Difference]: Finished difference Result 37078 states and 51939 transitions. [2020-10-12 13:43:35,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:43:35,560 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 202 [2020-10-12 13:43:35,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:43:35,657 INFO L225 Difference]: With dead ends: 37078 [2020-10-12 13:43:35,658 INFO L226 Difference]: Without dead ends: 24429 [2020-10-12 13:43:35,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:43:35,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24429 states. [2020-10-12 13:43:36,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24429 to 24096. [2020-10-12 13:43:36,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24096 states. [2020-10-12 13:43:36,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24096 states to 24096 states and 31078 transitions. [2020-10-12 13:43:36,295 INFO L78 Accepts]: Start accepts. Automaton has 24096 states and 31078 transitions. Word has length 202 [2020-10-12 13:43:36,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:43:36,296 INFO L479 AbstractCegarLoop]: Abstraction has 24096 states and 31078 transitions. [2020-10-12 13:43:36,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:43:36,297 INFO L276 IsEmpty]: Start isEmpty. Operand 24096 states and 31078 transitions. [2020-10-12 13:43:36,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-12 13:43:36,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:43:36,301 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:43:36,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:43:36,302 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:43:36,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:43:36,303 INFO L82 PathProgramCache]: Analyzing trace with hash -2097314810, now seen corresponding path program 1 times [2020-10-12 13:43:36,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:43:36,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045509324] [2020-10-12 13:43:36,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:43:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:36,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:36,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:37,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:38,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:38,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:38,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-12 13:43:38,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:43:38,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1738 [2020-10-12 13:43:38,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:43:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-12 13:43:38,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:43:38,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:43:38,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:43:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:38,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:38,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:38,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:43:38,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:43:38,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:43:38,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:38,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:43:38,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:43:38,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:43:38,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:43:38,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:43:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:38,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:38,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:38,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:43:38,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:43:38,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 13:43:38,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:38,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:43:38,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:43:38,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 13:43:38,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:43:38,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 13:43:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:38,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:38,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:38,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:38,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:43:38,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:43:38,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-12 13:43:38,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:38,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:43:38,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:43:38,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 13:43:38,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:43:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 112 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:43:38,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045509324] [2020-10-12 13:43:38,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:43:38,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:43:38,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928533180] [2020-10-12 13:43:38,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:43:38,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:43:38,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:43:38,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:43:38,847 INFO L87 Difference]: Start difference. First operand 24096 states and 31078 transitions. Second operand 6 states. [2020-10-12 13:43:56,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:43:56,766 INFO L93 Difference]: Finished difference Result 46401 states and 61211 transitions. [2020-10-12 13:43:56,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:43:56,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 253 [2020-10-12 13:43:56,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:43:56,849 INFO L225 Difference]: With dead ends: 46401 [2020-10-12 13:43:56,850 INFO L226 Difference]: Without dead ends: 22306 [2020-10-12 13:43:56,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:43:56,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22306 states. [2020-10-12 13:43:57,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22306 to 22167. [2020-10-12 13:43:57,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22167 states. [2020-10-12 13:43:57,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22167 states to 22167 states and 26757 transitions. [2020-10-12 13:43:57,329 INFO L78 Accepts]: Start accepts. Automaton has 22167 states and 26757 transitions. Word has length 253 [2020-10-12 13:43:57,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:43:57,331 INFO L479 AbstractCegarLoop]: Abstraction has 22167 states and 26757 transitions. [2020-10-12 13:43:57,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:43:57,332 INFO L276 IsEmpty]: Start isEmpty. Operand 22167 states and 26757 transitions. [2020-10-12 13:43:57,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-12 13:43:57,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:43:57,339 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:43:57,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:43:57,339 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:43:57,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:43:57,340 INFO L82 PathProgramCache]: Analyzing trace with hash -329445371, now seen corresponding path program 1 times [2020-10-12 13:43:57,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:43:57,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033173399] [2020-10-12 13:43:57,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:43:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:57,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:57,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:58,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:58,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-12 13:43:58,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:43:58,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1432 [2020-10-12 13:43:58,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:58,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:43:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 13:43:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 13:43:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:43:58,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:43:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:58,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:58,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:58,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:43:58,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:43:58,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:43:58,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:58,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:43:58,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:43:58,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:43:58,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:43:58,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:43:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:58,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:59,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:59,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:43:59,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:43:59,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 13:43:59,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:59,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:43:59,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:43:59,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:43:59,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:43:59,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 13:43:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:59,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:59,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:59,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 13:43:59,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:43:59,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 13:43:59,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:59,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:43:59,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:43:59,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:43:59,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:43:59,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-12 13:43:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:59,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:59,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:59,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 13:43:59,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:43:59,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 13:43:59,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:59,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:43:59,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:43:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 13:43:59,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:43:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2020-10-12 13:43:59,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033173399] [2020-10-12 13:43:59,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:43:59,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:43:59,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831530061] [2020-10-12 13:43:59,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:43:59,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:43:59,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:43:59,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:43:59,411 INFO L87 Difference]: Start difference. First operand 22167 states and 26757 transitions. Second operand 5 states. [2020-10-12 13:44:26,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:44:26,389 INFO L93 Difference]: Finished difference Result 50448 states and 64058 transitions. [2020-10-12 13:44:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:44:26,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 290 [2020-10-12 13:44:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:44:26,532 INFO L225 Difference]: With dead ends: 50448 [2020-10-12 13:44:26,533 INFO L226 Difference]: Without dead ends: 35638 [2020-10-12 13:44:26,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:44:26,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35638 states. [2020-10-12 13:44:27,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35638 to 33145. [2020-10-12 13:44:27,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33145 states. [2020-10-12 13:44:27,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33145 states to 33145 states and 41796 transitions. [2020-10-12 13:44:27,457 INFO L78 Accepts]: Start accepts. Automaton has 33145 states and 41796 transitions. Word has length 290 [2020-10-12 13:44:27,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:44:27,458 INFO L479 AbstractCegarLoop]: Abstraction has 33145 states and 41796 transitions. [2020-10-12 13:44:27,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:44:27,458 INFO L276 IsEmpty]: Start isEmpty. Operand 33145 states and 41796 transitions. [2020-10-12 13:44:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-12 13:44:27,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:44:27,466 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:44:27,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:44:27,467 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:44:27,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:44:27,468 INFO L82 PathProgramCache]: Analyzing trace with hash -80204384, now seen corresponding path program 1 times [2020-10-12 13:44:27,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:44:27,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841537583] [2020-10-12 13:44:27,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:44:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:27,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:27,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:28,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:29,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:31,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:44:31,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-12 13:44:31,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:44:31,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4152 [2020-10-12 13:44:31,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:44:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:44:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-12 13:44:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 13:44:31,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:44:31,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:44:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:31,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:31,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:44:31,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:44:31,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:44:31,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:44:31,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:44:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:44:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:44:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:44:31,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:44:31,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:44:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:31,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:32,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:44:32,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:44:32,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:44:32,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-12 13:44:32,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:44:32,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:44:32,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:44:32,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 13:44:32,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:44:32,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 13:44:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:32,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:32,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:44:32,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:44:32,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:44:32,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-12 13:44:32,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:44:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:44:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:44:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 13:44:32,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:44:32,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-12 13:44:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:32,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:32,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:44:32,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 13:44:32,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:44:32,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 13:44:32,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:44:32,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:44:32,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-12 13:44:32,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:44:32,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:44:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 144 proven. 68 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 13:44:32,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841537583] [2020-10-12 13:44:32,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:44:32,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:44:32,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438239313] [2020-10-12 13:44:32,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:44:32,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:44:32,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:44:32,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:44:32,633 INFO L87 Difference]: Start difference. First operand 33145 states and 41796 transitions. Second operand 7 states.