/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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:33:40,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:33:40,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:33:40,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:33:40,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:33:40,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:33:40,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:33:40,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:33:40,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:33:40,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:33:40,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:33:40,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:33:40,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:33:40,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:33:40,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:33:40,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:33:40,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:33:40,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:33:40,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:33:40,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:33:40,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:33:40,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:33:40,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:33:40,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:33:40,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:33:40,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:33:40,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:33:40,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:33:40,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:33:40,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:33:40,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:33:40,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:33:40,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:33:40,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:33:40,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:33:40,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:33:40,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:33:40,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:33:40,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:33:40,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:33:40,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:33:40,347 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 13:33:40,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:33:40,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:33:40,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:33:40,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:33:40,410 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:33:40,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:33:40,411 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:33:40,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:33:40,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:33:40,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:33:40,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:33:40,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:33:40,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:33:40,414 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:33:40,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:33:40,416 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:33:40,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:33:40,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:33:40,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:33:40,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:33:40,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:33:40,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:33:40,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:33:40,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:33:40,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:33:40,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:33:40,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:33:40,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:33:40,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:33:40,418 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 13:33:40,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:33:40,815 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:33:40,819 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:33:40,821 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:33:40,822 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:33:40,823 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label03.c [2020-10-12 13:33:40,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/211f63ebd/b0d6a0cfe04d4a67b84505e457a8f3aa/FLAG775a736d8 [2020-10-12 13:33:41,836 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:33:41,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label03.c [2020-10-12 13:33:41,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/211f63ebd/b0d6a0cfe04d4a67b84505e457a8f3aa/FLAG775a736d8 [2020-10-12 13:33:42,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/211f63ebd/b0d6a0cfe04d4a67b84505e457a8f3aa [2020-10-12 13:33:42,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:33:42,291 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:33:42,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:33:42,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:33:42,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:33:42,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:33:42" (1/1) ... [2020-10-12 13:33:42,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2234316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:33:42, skipping insertion in model container [2020-10-12 13:33:42,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:33:42" (1/1) ... [2020-10-12 13:33:42,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:33:42,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:33:44,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:33:44,470 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:33:45,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:33:45,461 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:33:45,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:33:45 WrapperNode [2020-10-12 13:33:45,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:33:45,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:33:45,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:33:45,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:33:45,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:33:45" (1/1) ... [2020-10-12 13:33:45,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:33:45" (1/1) ... [2020-10-12 13:33:45,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:33:45" (1/1) ... [2020-10-12 13:33:45,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:33:45" (1/1) ... [2020-10-12 13:33:45,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:33:45" (1/1) ... [2020-10-12 13:33:45,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:33:45" (1/1) ... [2020-10-12 13:33:45,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:33:45" (1/1) ... [2020-10-12 13:33:45,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:33:45,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:33:45,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:33:45,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:33:45,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:33:45" (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 13:33:45,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:33:45,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:33:45,957 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:33:45,958 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:33:45,958 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:33:45,958 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:33:45,958 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:33:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:33:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:33:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:33:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:33:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:33:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:33:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:33:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:33:45,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:33:45,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:33:59,514 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:33:59,515 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:33:59,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:33:59 BoogieIcfgContainer [2020-10-12 13:33:59,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:33:59,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:33:59,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:33:59,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:33:59,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:33:42" (1/3) ... [2020-10-12 13:33:59,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a86b818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:33:59, skipping insertion in model container [2020-10-12 13:33:59,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:33:45" (2/3) ... [2020-10-12 13:33:59,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a86b818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:33:59, skipping insertion in model container [2020-10-12 13:33:59,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:33:59" (3/3) ... [2020-10-12 13:33:59,543 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label03.c [2020-10-12 13:33:59,556 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:33:59,568 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:33:59,586 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:33:59,625 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:33:59,625 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:33:59,625 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:33:59,625 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:33:59,625 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:33:59,625 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:33:59,626 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:33:59,626 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:33:59,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-12 13:33:59,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 13:33:59,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:33:59,683 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:33:59,683 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:33:59,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:33:59,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1631378225, now seen corresponding path program 1 times [2020-10-12 13:33:59,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:33:59,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081837974] [2020-10-12 13:33:59,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:33:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:33:59,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:00,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:00,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 13:34:00,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:34:00,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-12 13:34:00,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:34:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:34:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 13:34:00,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 13:34:00,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:34:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:00,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:00,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:00,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:34:00,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:34:00,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 13:34:00,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:34:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:34:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:34:00,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:34:00,627 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 13:34:00,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081837974] [2020-10-12 13:34:00,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:34:00,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:34:00,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267327493] [2020-10-12 13:34:00,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:34:00,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:34:00,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:34:00,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:34:00,662 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-12 13:34:16,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:34:16,501 INFO L93 Difference]: Finished difference Result 3243 states and 5948 transitions. [2020-10-12 13:34:16,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:34:16,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-12 13:34:16,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:34:16,539 INFO L225 Difference]: With dead ends: 3243 [2020-10-12 13:34:16,540 INFO L226 Difference]: Without dead ends: 2045 [2020-10-12 13:34:16,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:34:16,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-10-12 13:34:16,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1988. [2020-10-12 13:34:16,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2020-10-12 13:34:16,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3533 transitions. [2020-10-12 13:34:16,758 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3533 transitions. Word has length 40 [2020-10-12 13:34:16,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:34:16,759 INFO L479 AbstractCegarLoop]: Abstraction has 1988 states and 3533 transitions. [2020-10-12 13:34:16,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:34:16,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3533 transitions. [2020-10-12 13:34:16,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 13:34:16,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:34:16,771 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:34:16,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:34:16,771 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:34:16,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:34:16,772 INFO L82 PathProgramCache]: Analyzing trace with hash -398628649, now seen corresponding path program 1 times [2020-10-12 13:34:16,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:34:16,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553226591] [2020-10-12 13:34:16,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:34:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:16,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:17,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:18,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:18,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:18,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 13:34:18,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:34:18,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1830 [2020-10-12 13:34:18,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:18,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:34:18,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:34:18,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 13:34:18,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:34:18,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:34:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:18,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:18,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:18,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:34:18,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:34:18,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:34:18,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:34:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:34:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:34:18,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:34:18,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:34:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:18,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:18,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:18,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 13:34:18,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:34:18,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-12 13:34:19,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:19,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:34:19,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:34:19,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:34:19,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:34:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:34:19,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553226591] [2020-10-12 13:34:19,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:34:19,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 13:34:19,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604568858] [2020-10-12 13:34:19,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:34:19,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:34:19,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:34:19,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:34:19,114 INFO L87 Difference]: Start difference. First operand 1988 states and 3533 transitions. Second operand 8 states. [2020-10-12 13:34:43,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:34:43,992 INFO L93 Difference]: Finished difference Result 7338 states and 13417 transitions. [2020-10-12 13:34:43,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:34:43,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-10-12 13:34:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:34:44,025 INFO L225 Difference]: With dead ends: 7338 [2020-10-12 13:34:44,026 INFO L226 Difference]: Without dead ends: 5356 [2020-10-12 13:34:44,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 13:34:44,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5356 states. [2020-10-12 13:34:44,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5356 to 5331. [2020-10-12 13:34:44,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5331 states. [2020-10-12 13:34:44,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5331 states to 5331 states and 8095 transitions. [2020-10-12 13:34:44,268 INFO L78 Accepts]: Start accepts. Automaton has 5331 states and 8095 transitions. Word has length 109 [2020-10-12 13:34:44,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:34:44,268 INFO L479 AbstractCegarLoop]: Abstraction has 5331 states and 8095 transitions. [2020-10-12 13:34:44,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:34:44,269 INFO L276 IsEmpty]: Start isEmpty. Operand 5331 states and 8095 transitions. [2020-10-12 13:34:44,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 13:34:44,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:34:44,272 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:34:44,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:34:44,272 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:34:44,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:34:44,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1980938507, now seen corresponding path program 1 times [2020-10-12 13:34:44,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:34:44,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228799051] [2020-10-12 13:34:44,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:34:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:44,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:44,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:44,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:45,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:45,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 13:34:45,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:34:45,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1234 [2020-10-12 13:34:45,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:34:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:34:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:34:45,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:34:45,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:34:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:45,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:45,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:45,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:34:45,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:34:45,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 13:34:45,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:45,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:34:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:34:45,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:34:45,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:34:45,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:34:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:45,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:45,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:45,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:34:45,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:34:45,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-12 13:34:45,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:45,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:34:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:34:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:34:45,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:34:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:34:45,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228799051] [2020-10-12 13:34:45,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:34:45,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:34:45,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438705049] [2020-10-12 13:34:45,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:34:45,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:34:45,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:34:45,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:34:45,897 INFO L87 Difference]: Start difference. First operand 5331 states and 8095 transitions. Second operand 7 states. [2020-10-12 13:35:10,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:35:10,939 INFO L93 Difference]: Finished difference Result 15956 states and 24981 transitions. [2020-10-12 13:35:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:35:10,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-12 13:35:10,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:35:10,999 INFO L225 Difference]: With dead ends: 15956 [2020-10-12 13:35:11,000 INFO L226 Difference]: Without dead ends: 10631 [2020-10-12 13:35:11,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:35:11,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10631 states. [2020-10-12 13:35:11,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10631 to 10479. [2020-10-12 13:35:11,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10479 states. [2020-10-12 13:35:11,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10479 states to 10479 states and 14806 transitions. [2020-10-12 13:35:11,336 INFO L78 Accepts]: Start accepts. Automaton has 10479 states and 14806 transitions. Word has length 115 [2020-10-12 13:35:11,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:35:11,339 INFO L479 AbstractCegarLoop]: Abstraction has 10479 states and 14806 transitions. [2020-10-12 13:35:11,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:35:11,339 INFO L276 IsEmpty]: Start isEmpty. Operand 10479 states and 14806 transitions. [2020-10-12 13:35:11,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-12 13:35:11,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:35:11,348 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:11,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:35:11,349 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:35:11,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:35:11,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1620335089, now seen corresponding path program 1 times [2020-10-12 13:35:11,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:35:11,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280359903] [2020-10-12 13:35:11,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:35:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:11,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:11,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:12,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:12,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 13:35:12,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:35:12,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 965 [2020-10-12 13:35:12,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:35:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:35:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:35:12,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:35:12,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:35:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:12,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:12,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:35:12,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:12,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:35:12,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:35:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:35:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:35:12,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:12,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:35:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:12,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:12,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:12,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 13:35:12,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:12,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-12 13:35:12,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:12,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:35:12,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:35:12,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 13:35:12,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:35:12,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280359903] [2020-10-12 13:35:12,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:35:12,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:35:12,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115936274] [2020-10-12 13:35:12,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:35:12,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:35:12,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:35:12,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:35:12,799 INFO L87 Difference]: Start difference. First operand 10479 states and 14806 transitions. Second operand 7 states. [2020-10-12 13:35:35,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:35:35,450 INFO L93 Difference]: Finished difference Result 22456 states and 33574 transitions. [2020-10-12 13:35:35,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:35:35,452 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-10-12 13:35:35,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:35:35,557 INFO L225 Difference]: With dead ends: 22456 [2020-10-12 13:35:35,557 INFO L226 Difference]: Without dead ends: 11983 [2020-10-12 13:35:35,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:35:35,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11983 states. [2020-10-12 13:35:36,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11983 to 11422. [2020-10-12 13:35:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11422 states. [2020-10-12 13:35:36,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11422 states to 11422 states and 16019 transitions. [2020-10-12 13:35:36,152 INFO L78 Accepts]: Start accepts. Automaton has 11422 states and 16019 transitions. Word has length 145 [2020-10-12 13:35:36,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:35:36,154 INFO L479 AbstractCegarLoop]: Abstraction has 11422 states and 16019 transitions. [2020-10-12 13:35:36,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:35:36,154 INFO L276 IsEmpty]: Start isEmpty. Operand 11422 states and 16019 transitions. [2020-10-12 13:35:36,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-12 13:35:36,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:35:36,158 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:36,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:35:36,158 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:35:36,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:35:36,159 INFO L82 PathProgramCache]: Analyzing trace with hash -820048069, now seen corresponding path program 1 times [2020-10-12 13:35:36,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:35:36,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026945934] [2020-10-12 13:35:36,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:35:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:36,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:36,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:37,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:37,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 13:35:37,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:35:37,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1334 [2020-10-12 13:35:37,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:37,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:35:37,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:35:37,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 13:35:37,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:37,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:35:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:37,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:37,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:37,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:35:37,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:37,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:35:37,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:35:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:35:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:35:37,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:37,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:35:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:37,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:37,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:37,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 13:35:37,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:37,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-12 13:35:37,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:37,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:35:37,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:35:37,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 13:35:37,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:38,201 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:35:38,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026945934] [2020-10-12 13:35:38,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:35:38,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 13:35:38,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727716882] [2020-10-12 13:35:38,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:35:38,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:35:38,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:35:38,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:35:38,204 INFO L87 Difference]: Start difference. First operand 11422 states and 16019 transitions. Second operand 8 states. [2020-10-12 13:36:01,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:36:01,713 INFO L93 Difference]: Finished difference Result 22446 states and 32137 transitions. [2020-10-12 13:36:01,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:36:01,722 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 155 [2020-10-12 13:36:01,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:36:01,774 INFO L225 Difference]: With dead ends: 22446 [2020-10-12 13:36:01,774 INFO L226 Difference]: Without dead ends: 11833 [2020-10-12 13:36:01,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:36:01,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11833 states. [2020-10-12 13:36:02,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11833 to 11448. [2020-10-12 13:36:02,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11448 states. [2020-10-12 13:36:02,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11448 states to 11448 states and 15988 transitions. [2020-10-12 13:36:02,122 INFO L78 Accepts]: Start accepts. Automaton has 11448 states and 15988 transitions. Word has length 155 [2020-10-12 13:36:02,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:36:02,123 INFO L479 AbstractCegarLoop]: Abstraction has 11448 states and 15988 transitions. [2020-10-12 13:36:02,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:36:02,123 INFO L276 IsEmpty]: Start isEmpty. Operand 11448 states and 15988 transitions. [2020-10-12 13:36:02,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-12 13:36:02,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:36:02,126 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:36:02,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:36:02,127 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:36:02,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:36:02,127 INFO L82 PathProgramCache]: Analyzing trace with hash -130747528, now seen corresponding path program 1 times [2020-10-12 13:36:02,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:36:02,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747536376] [2020-10-12 13:36:02,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:36:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:36:02,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:02,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:36:02,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-12 13:36:02,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:36:02,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 735 [2020-10-12 13:36:02,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:36:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:36:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:36:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-12 13:36:02,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:36:03,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:36:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:36:03,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:03,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:36:03,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:36:03,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:36:03,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:36:03,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:36:03,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:36:03,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:36:03,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:36:03,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:36:03,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:36:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:36:03,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:03,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:03,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:36:03,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:36:03,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:36:03,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-12 13:36:03,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:36:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:36:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:36:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-12 13:36:03,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:36:03,715 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:36:03,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747536376] [2020-10-12 13:36:03,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:36:03,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:36:03,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274287175] [2020-10-12 13:36:03,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:36:03,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:36:03,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:36:03,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:36:03,719 INFO L87 Difference]: Start difference. First operand 11448 states and 15988 transitions. Second operand 7 states. [2020-10-12 13:36:34,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:36:34,490 INFO L93 Difference]: Finished difference Result 30793 states and 45553 transitions. [2020-10-12 13:36:34,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 13:36:34,496 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-10-12 13:36:34,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:36:34,593 INFO L225 Difference]: With dead ends: 30793 [2020-10-12 13:36:34,594 INFO L226 Difference]: Without dead ends: 20154 [2020-10-12 13:36:34,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:36:34,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20154 states. [2020-10-12 13:36:35,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20154 to 20076. [2020-10-12 13:36:35,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20076 states. [2020-10-12 13:36:35,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20076 states to 20076 states and 27003 transitions. [2020-10-12 13:36:35,170 INFO L78 Accepts]: Start accepts. Automaton has 20076 states and 27003 transitions. Word has length 169 [2020-10-12 13:36:35,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:36:35,171 INFO L479 AbstractCegarLoop]: Abstraction has 20076 states and 27003 transitions. [2020-10-12 13:36:35,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:36:35,171 INFO L276 IsEmpty]: Start isEmpty. Operand 20076 states and 27003 transitions. [2020-10-12 13:36:35,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-12 13:36:35,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:36:35,176 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-12 13:36:35,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:36:35,177 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:36:35,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:36:35,177 INFO L82 PathProgramCache]: Analyzing trace with hash 751623911, now seen corresponding path program 1 times [2020-10-12 13:36:35,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:36:35,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763112160] [2020-10-12 13:36:35,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:36:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:36:35,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:35,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:35,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:37,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:38,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:39,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:36:39,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-12 13:36:39,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:36:39,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4296 [2020-10-12 13:36:39,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:36:39,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:36:39,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:36:39,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-12 13:36:39,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:36:39,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:36:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:36:39,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:39,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:36:39,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:36:39,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:36:39,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:36:39,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:36:39,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:36:39,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:36:39,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:36:39,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:36:39,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:36:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:36:39,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:39,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:36:39,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:36:39,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:36:39,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-12 13:36:39,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:36:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:36:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:36:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 13:36:39,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:36:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 13:36:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:36:40,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:40,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:40,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:36:40,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 13:36:40,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:36:40,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-10-12 13:36:40,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:36:40,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:36:40,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:36:40,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 13:36:40,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:36:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-12 13:36:40,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763112160] [2020-10-12 13:36:40,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:36:40,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:36:40,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956516220] [2020-10-12 13:36:40,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:36:40,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:36:40,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:36:40,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:36:40,687 INFO L87 Difference]: Start difference. First operand 20076 states and 27003 transitions. Second operand 7 states. [2020-10-12 13:37:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:37:21,895 INFO L93 Difference]: Finished difference Result 44963 states and 61446 transitions. [2020-10-12 13:37:21,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:37:21,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-12 13:37:21,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:37:22,007 INFO L225 Difference]: With dead ends: 44963 [2020-10-12 13:37:22,007 INFO L226 Difference]: Without dead ends: 25696 [2020-10-12 13:37:22,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:37:22,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25696 states. [2020-10-12 13:37:22,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25696 to 25327. [2020-10-12 13:37:22,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25327 states. [2020-10-12 13:37:22,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25327 states to 25327 states and 33386 transitions. [2020-10-12 13:37:22,973 INFO L78 Accepts]: Start accepts. Automaton has 25327 states and 33386 transitions. Word has length 260 [2020-10-12 13:37:22,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:37:22,974 INFO L479 AbstractCegarLoop]: Abstraction has 25327 states and 33386 transitions. [2020-10-12 13:37:22,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:37:22,975 INFO L276 IsEmpty]: Start isEmpty. Operand 25327 states and 33386 transitions. [2020-10-12 13:37:22,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-12 13:37:22,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:37:22,985 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:37:22,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:37:22,986 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:37:22,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:37:22,987 INFO L82 PathProgramCache]: Analyzing trace with hash 771312030, now seen corresponding path program 1 times [2020-10-12 13:37:22,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:37:22,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736248322] [2020-10-12 13:37:22,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:37:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:37:23,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:23,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:23,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:24,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:25,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:37:25,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-12 13:37:25,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:37:25,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2525 [2020-10-12 13:37:25,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:37:25,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 13:37:25,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:37:25,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-12 13:37:25,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:37:25,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:37:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:37:25,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:25,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:37:25,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:37:25,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:37:25,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:37:25,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:37:25,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:37:25,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:37:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:37:25,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:37:25,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:37:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:37:26,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:26,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:26,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:37:26,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:37:26,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:37:26,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-12 13:37:26,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:37:26,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:37:26,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:37:26,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-12 13:37:26,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:37:26,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 13:37:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:37:26,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:26,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:27,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:37:27,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 13:37:27,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:37:27,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-12 13:37:27,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:37:27,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:37:27,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:37:27,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 13:37:27,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:37:27,280 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-10-12 13:37:27,605 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-10-12 13:37:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-12 13:37:28,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736248322] [2020-10-12 13:37:28,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:37:28,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:37:28,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662863405] [2020-10-12 13:37:28,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 13:37:28,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:37:28,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 13:37:28,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:37:28,465 INFO L87 Difference]: Start difference. First operand 25327 states and 33386 transitions. Second operand 11 states. [2020-10-12 13:37:28,801 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-10-12 13:37:29,855 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-10-12 13:37:30,342 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2020-10-12 13:37:30,725 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-12 13:37:32,602 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2020-10-12 13:37:35,544 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-12 13:37:35,949 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-12 13:37:36,291 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-12 13:37:36,885 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51