/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem17_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:31:55,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:31:55,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:31:55,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:31:55,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:31:55,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:31:55,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:31:55,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:31:55,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:31:55,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:31:55,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:31:55,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:31:55,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:31:55,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:31:55,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:31:55,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:31:55,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:31:55,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:31:55,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:31:55,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:31:55,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:31:55,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:31:55,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:31:55,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:31:55,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:31:55,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:31:55,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:31:55,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:31:55,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:31:55,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:31:55,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:31:55,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:31:55,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:31:55,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:31:55,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:31:55,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:31:55,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:31:55,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:31:55,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:31:55,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:31:55,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:31:55,471 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 [2020-10-14 22:31:55,512 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:31:55,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:31:55,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:31:55,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:31:55,515 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:31:55,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:31:55,516 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:31:55,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:31:55,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:31:55,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:31:55,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:31:55,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:31:55,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:31:55,519 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:31:55,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:31:55,519 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:31:55,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:31:55,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:31:55,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:31:55,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:31:55,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:31:55,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:31:55,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:31:55,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:31:55,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:31:55,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:31:55,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:31:55,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:31:55,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:31:55,523 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:31:55,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:31:55,897 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:31:55,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:31:55,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:31:55,903 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:31:55,904 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label35.c [2020-10-14 22:31:55,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db2aa39ca/ecd057692d874147bef8935417c75011/FLAG586b73a96 [2020-10-14 22:31:56,775 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:31:56,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label35.c [2020-10-14 22:31:56,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db2aa39ca/ecd057692d874147bef8935417c75011/FLAG586b73a96 [2020-10-14 22:31:57,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db2aa39ca/ecd057692d874147bef8935417c75011 [2020-10-14 22:31:57,307 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:31:57,309 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:31:57,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:31:57,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:31:57,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:31:57,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:31:57" (1/1) ... [2020-10-14 22:31:57,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@144c4f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:57, skipping insertion in model container [2020-10-14 22:31:57,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:31:57" (1/1) ... [2020-10-14 22:31:57,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:31:57,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:31:58,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:31:58,534 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:31:58,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:31:58,999 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:31:59,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:59 WrapperNode [2020-10-14 22:31:59,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:31:59,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:31:59,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:31:59,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:31:59,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:59" (1/1) ... [2020-10-14 22:31:59,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:59" (1/1) ... [2020-10-14 22:31:59,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:59" (1/1) ... [2020-10-14 22:31:59,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:59" (1/1) ... [2020-10-14 22:31:59,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:59" (1/1) ... [2020-10-14 22:31:59,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:59" (1/1) ... [2020-10-14 22:31:59,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:59" (1/1) ... [2020-10-14 22:31:59,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:31:59,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:31:59,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:31:59,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:31:59,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:59" (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 [2020-10-14 22:31:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:31:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:31:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:31:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:31:59,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:31:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:31:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:31:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:31:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:31:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:31:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:31:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:31:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:32:06,551 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:32:06,552 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:32:06,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:32:06 BoogieIcfgContainer [2020-10-14 22:32:06,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:32:06,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:32:06,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:32:06,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:32:06,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:31:57" (1/3) ... [2020-10-14 22:32:06,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf7ae8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:32:06, skipping insertion in model container [2020-10-14 22:32:06,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:59" (2/3) ... [2020-10-14 22:32:06,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf7ae8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:32:06, skipping insertion in model container [2020-10-14 22:32:06,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:32:06" (3/3) ... [2020-10-14 22:32:06,574 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label35.c [2020-10-14 22:32:06,587 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:32:06,599 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:32:06,617 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:32:06,650 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:32:06,650 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:32:06,650 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:32:06,650 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:32:06,650 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:32:06,650 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:32:06,651 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:32:06,651 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:32:06,686 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:32:06,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 22:32:06,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:32:06,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:32:06,697 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:32:06,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:32:06,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1938156481, now seen corresponding path program 1 times [2020-10-14 22:32:06,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:32:06,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535593433] [2020-10-14 22:32:06,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:32:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:06,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:07,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:07,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 22:32:07,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:07,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-14 22:32:07,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:07,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:07,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:32:07,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:32:07,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 22:32:07,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 22:32:07,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:32:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:07,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:07,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:07,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:32:07,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:07,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 22:32:07,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:07,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:07,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:07,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:07,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:32:07,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:32:07,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535593433] [2020-10-14 22:32:07,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:32:07,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:32:07,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213528255] [2020-10-14 22:32:07,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:32:07,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:32:07,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:32:07,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:32:07,526 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:32:20,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:32:20,212 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 22:32:20,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:32:20,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-14 22:32:20,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:32:20,239 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 22:32:20,239 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 22:32:20,248 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 [2020-10-14 22:32:20,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 22:32:20,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 22:32:20,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 22:32:20,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 22:32:20,379 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 13 [2020-10-14 22:32:20,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:32:20,379 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 22:32:20,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:32:20,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 22:32:20,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 22:32:20,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:32:20,385 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 22:32:20,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:32:20,385 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:32:20,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:32:20,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1531265513, now seen corresponding path program 1 times [2020-10-14 22:32:20,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:32:20,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691960754] [2020-10-14 22:32:20,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:32:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:20,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:20,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:21,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:21,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:21,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 22:32:21,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:32:21,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1324 [2020-10-14 22:32:21,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:21,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:21,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:32:21,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:32:21,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 22:32:21,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:32:21,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:32:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:21,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:21,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:21,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:32:21,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:21,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:32:21,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:21,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:21,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:21,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:21,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:32:21,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:21,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:32:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:21,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:22,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:22,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:32:22,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:22,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 22:32:22,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:22,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:32:22,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:22,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:32:22,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:22,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:32:22,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691960754] [2020-10-14 22:32:22,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:32:22,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:32:22,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680302559] [2020-10-14 22:32:22,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:32:22,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:32:22,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:32:22,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:32:22,159 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 7 states. [2020-10-14 22:32:35,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:32:35,497 INFO L93 Difference]: Finished difference Result 2928 states and 4532 transitions. [2020-10-14 22:32:35,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:32:35,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-10-14 22:32:35,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:32:35,515 INFO L225 Difference]: With dead ends: 2928 [2020-10-14 22:32:35,516 INFO L226 Difference]: Without dead ends: 1932 [2020-10-14 22:32:35,520 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 [2020-10-14 22:32:35,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2020-10-14 22:32:35,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1901. [2020-10-14 22:32:35,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1901 states. [2020-10-14 22:32:35,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 2465 transitions. [2020-10-14 22:32:35,621 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 2465 transitions. Word has length 84 [2020-10-14 22:32:35,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:32:35,622 INFO L479 AbstractCegarLoop]: Abstraction has 1901 states and 2465 transitions. [2020-10-14 22:32:35,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:32:35,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 2465 transitions. [2020-10-14 22:32:35,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 22:32:35,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:32:35,630 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 22:32:35,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:32:35,630 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:32:35,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:32:35,631 INFO L82 PathProgramCache]: Analyzing trace with hash 198330217, now seen corresponding path program 1 times [2020-10-14 22:32:35,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:32:35,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757654934] [2020-10-14 22:32:35,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:32:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:35,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:35,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:35,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:32:35,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:35,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-14 22:32:35,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:35,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:32:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 22:32:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 22:32:35,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:32:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:36,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:36,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:36,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:32:36,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:36,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:32:36,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:36,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:32:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:32:36,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:32:36,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:32:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:36,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:36,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:36,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:32:36,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:36,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 22:32:36,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:36,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:32:36,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:32:36,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757654934] [2020-10-14 22:32:36,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:32:36,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:32:36,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030525087] [2020-10-14 22:32:36,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:32:36,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:32:36,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:32:36,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:32:36,313 INFO L87 Difference]: Start difference. First operand 1901 states and 2465 transitions. Second operand 5 states. [2020-10-14 22:32:51,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:32:51,468 INFO L93 Difference]: Finished difference Result 4706 states and 6250 transitions. [2020-10-14 22:32:51,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:32:51,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-14 22:32:51,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:32:51,484 INFO L225 Difference]: With dead ends: 4706 [2020-10-14 22:32:51,484 INFO L226 Difference]: Without dead ends: 2365 [2020-10-14 22:32:51,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:32:51,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2020-10-14 22:32:51,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2349. [2020-10-14 22:32:51,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2349 states. [2020-10-14 22:32:51,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 2885 transitions. [2020-10-14 22:32:51,559 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 2885 transitions. Word has length 87 [2020-10-14 22:32:51,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:32:51,560 INFO L479 AbstractCegarLoop]: Abstraction has 2349 states and 2885 transitions. [2020-10-14 22:32:51,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:32:51,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 2885 transitions. [2020-10-14 22:32:51,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 22:32:51,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:32:51,576 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 22:32:51,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:32:51,576 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:32:51,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:32:51,576 INFO L82 PathProgramCache]: Analyzing trace with hash -263801947, now seen corresponding path program 1 times [2020-10-14 22:32:51,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:32:51,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321242308] [2020-10-14 22:32:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:32:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:51,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:52,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:52,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:52,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 22:32:52,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:32:52,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1228 [2020-10-14 22:32:52,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:52,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:52,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:32:52,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:32:52,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:32:52,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:32:53,035 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-14 22:32:53,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:32:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:53,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:53,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:53,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:32:53,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:53,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:32:53,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:53,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:53,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:32:53,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:53,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:32:53,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:53,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:32:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:53,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:53,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:53,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:32:53,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:53,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 22:32:53,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:53,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:32:53,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:53,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:32:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:53,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:53,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:53,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 22:32:53,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:53,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 22:32:53,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:53,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:53,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:32:53,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:32:53,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:32:53,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321242308] [2020-10-14 22:32:53,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:32:53,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:32:53,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17884428] [2020-10-14 22:32:53,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:32:53,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:32:53,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:32:53,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:32:53,552 INFO L87 Difference]: Start difference. First operand 2349 states and 2885 transitions. Second operand 7 states. [2020-10-14 22:33:04,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:33:04,666 INFO L93 Difference]: Finished difference Result 6067 states and 7707 transitions. [2020-10-14 22:33:04,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:33:04,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-10-14 22:33:04,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:33:04,693 INFO L225 Difference]: With dead ends: 6067 [2020-10-14 22:33:04,693 INFO L226 Difference]: Without dead ends: 3724 [2020-10-14 22:33:04,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:33:04,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3724 states. [2020-10-14 22:33:04,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3724 to 3711. [2020-10-14 22:33:04,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3711 states. [2020-10-14 22:33:04,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 4541 transitions. [2020-10-14 22:33:04,813 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 4541 transitions. Word has length 173 [2020-10-14 22:33:04,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:33:04,814 INFO L479 AbstractCegarLoop]: Abstraction has 3711 states and 4541 transitions. [2020-10-14 22:33:04,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:33:04,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 4541 transitions. [2020-10-14 22:33:04,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-14 22:33:04,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:33:04,817 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 22:33:04,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:33:04,817 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:33:04,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:33:04,818 INFO L82 PathProgramCache]: Analyzing trace with hash -815266327, now seen corresponding path program 1 times [2020-10-14 22:33:04,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:33:04,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270142528] [2020-10-14 22:33:04,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:33:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:05,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:07,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:09,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:09,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 22:33:09,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:33:09,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4434 [2020-10-14 22:33:09,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:09,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:09,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:33:09,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:33:09,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:33:09,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:09,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:33:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:09,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:09,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:09,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:33:09,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:09,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:33:09,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:09,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:33:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:33:09,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:33:09,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:33:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:09,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:09,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:09,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:33:09,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:09,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 22:33:09,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:09,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:33:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:33:09,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:09,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:33:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:09,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:09,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:09,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:33:09,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:09,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-14 22:33:09,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:09,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:33:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:33:09,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 22:33:10,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270142528] [2020-10-14 22:33:10,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:33:10,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:33:10,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596621308] [2020-10-14 22:33:10,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:33:10,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:33:10,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:33:10,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:33:10,021 INFO L87 Difference]: Start difference. First operand 3711 states and 4541 transitions. Second operand 9 states. [2020-10-14 22:33:32,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:33:32,499 INFO L93 Difference]: Finished difference Result 13917 states and 17788 transitions. [2020-10-14 22:33:32,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 22:33:32,505 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 175 [2020-10-14 22:33:32,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:33:32,575 INFO L225 Difference]: With dead ends: 13917 [2020-10-14 22:33:32,575 INFO L226 Difference]: Without dead ends: 9742 [2020-10-14 22:33:32,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-14 22:33:32,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9742 states. [2020-10-14 22:33:32,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9742 to 9662. [2020-10-14 22:33:32,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9662 states. [2020-10-14 22:33:32,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9662 states to 9662 states and 11734 transitions. [2020-10-14 22:33:32,959 INFO L78 Accepts]: Start accepts. Automaton has 9662 states and 11734 transitions. Word has length 175 [2020-10-14 22:33:32,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:33:32,960 INFO L479 AbstractCegarLoop]: Abstraction has 9662 states and 11734 transitions. [2020-10-14 22:33:32,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:33:32,960 INFO L276 IsEmpty]: Start isEmpty. Operand 9662 states and 11734 transitions. [2020-10-14 22:33:32,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-14 22:33:32,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:33:32,965 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:33:32,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:33:32,966 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:33:32,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:33:32,966 INFO L82 PathProgramCache]: Analyzing trace with hash -2047992060, now seen corresponding path program 1 times [2020-10-14 22:33:32,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:33:32,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262603936] [2020-10-14 22:33:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:33:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:33,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:33,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:34,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:36,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:36,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-14 22:33:36,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:33:36,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3636 [2020-10-14 22:33:36,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:36,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:36,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:33:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:33:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:33:36,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:36,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:33:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:36,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:36,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:33:36,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:36,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:33:36,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:36,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:36,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:33:36,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:36,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:33:36,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:36,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:33:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:36,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:36,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:36,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:33:36,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:36,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 22:33:36,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:36,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:36,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:33:36,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:36,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:33:36,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:36,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:33:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:37,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:37,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:37,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:33:37,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:37,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-14 22:33:37,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:37,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:37,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:33:37,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:37,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:33:37,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:37,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:33:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:37,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:37,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:37,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:33:37,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:37,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 22:33:37,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:37,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:37,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:33:37,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:33:37,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:33:37,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 106 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 22:33:37,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262603936] [2020-10-14 22:33:37,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:33:37,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:33:37,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453175865] [2020-10-14 22:33:37,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:33:37,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:33:37,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:33:37,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:33:37,683 INFO L87 Difference]: Start difference. First operand 9662 states and 11734 transitions. Second operand 7 states. [2020-10-14 22:33:49,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:33:49,519 INFO L93 Difference]: Finished difference Result 20802 states and 25323 transitions. [2020-10-14 22:33:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:33:49,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-14 22:33:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:33:49,567 INFO L225 Difference]: With dead ends: 20802 [2020-10-14 22:33:49,567 INFO L226 Difference]: Without dead ends: 11146 [2020-10-14 22:33:49,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:33:49,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11146 states. [2020-10-14 22:33:49,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11146 to 11092. [2020-10-14 22:33:49,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11092 states. [2020-10-14 22:33:49,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11092 states to 11092 states and 13475 transitions. [2020-10-14 22:33:49,815 INFO L78 Accepts]: Start accepts. Automaton has 11092 states and 13475 transitions. Word has length 280 [2020-10-14 22:33:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:33:49,816 INFO L479 AbstractCegarLoop]: Abstraction has 11092 states and 13475 transitions. [2020-10-14 22:33:49,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:33:49,816 INFO L276 IsEmpty]: Start isEmpty. Operand 11092 states and 13475 transitions. [2020-10-14 22:33:49,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-14 22:33:49,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:33:49,823 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 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] [2020-10-14 22:33:49,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:33:49,823 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:33:49,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:33:49,824 INFO L82 PathProgramCache]: Analyzing trace with hash 2115707108, now seen corresponding path program 1 times [2020-10-14 22:33:49,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:33:49,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167689621] [2020-10-14 22:33:49,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:33:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:49,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:50,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:50,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:51,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:54,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:54,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-14 22:33:54,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:33:54,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 22:33:54,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:54,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:54,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:33:54,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:33:54,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 22:33:54,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:55,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:33:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:55,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:55,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:55,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:33:55,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:55,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:33:55,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:55,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:33:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:33:55,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:55,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:33:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:55,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:55,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:55,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:33:55,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:55,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 22:33:55,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:55,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:33:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:33:55,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:55,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:33:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:55,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:55,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:55,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:33:55,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:55,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-14 22:33:55,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:55,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:55,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:33:55,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:55,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:33:55,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:56,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-14 22:33:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:56,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:56,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:56,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:33:56,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 22:33:56,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:56,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:33:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:33:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:33:56,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:33:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 26 proven. 222 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 22:33:56,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167689621] [2020-10-14 22:33:56,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:33:56,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:33:56,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434995627] [2020-10-14 22:33:56,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:33:56,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:33:56,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:33:56,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:33:56,517 INFO L87 Difference]: Start difference. First operand 11092 states and 13475 transitions. Second operand 10 states. [2020-10-14 22:34:06,757 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-14 22:34:29,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:34:29,891 INFO L93 Difference]: Finished difference Result 33168 states and 41546 transitions. [2020-10-14 22:34:29,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 22:34:29,895 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 304 [2020-10-14 22:34:29,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:34:30,002 INFO L225 Difference]: With dead ends: 33168 [2020-10-14 22:34:30,002 INFO L226 Difference]: Without dead ends: 22082 [2020-10-14 22:34:30,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2020-10-14 22:34:30,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22082 states. [2020-10-14 22:34:30,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22082 to 21949. [2020-10-14 22:34:30,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21949 states. [2020-10-14 22:34:30,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21949 states to 21949 states and 26982 transitions. [2020-10-14 22:34:30,669 INFO L78 Accepts]: Start accepts. Automaton has 21949 states and 26982 transitions. Word has length 304 [2020-10-14 22:34:30,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:34:30,670 INFO L479 AbstractCegarLoop]: Abstraction has 21949 states and 26982 transitions. [2020-10-14 22:34:30,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:34:30,671 INFO L276 IsEmpty]: Start isEmpty. Operand 21949 states and 26982 transitions. [2020-10-14 22:34:30,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-14 22:34:30,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:34:30,681 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 22:34:30,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:34:30,682 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:34:30,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:34:30,683 INFO L82 PathProgramCache]: Analyzing trace with hash 982785932, now seen corresponding path program 1 times [2020-10-14 22:34:30,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:34:30,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638390023] [2020-10-14 22:34:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:34:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:30,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:31,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:31,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:33,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:35,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:35,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-14 22:34:35,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:34:35,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5121 [2020-10-14 22:34:35,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:35,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:35,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:34:35,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:34:35,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:34:35,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:34:36,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:34:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:36,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:36,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:36,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:34:36,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:36,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:34:36,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:36,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:36,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:34:36,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:34:36,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:36,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:34:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:36,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:36,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:36,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:34:36,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:36,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:34:36,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:36,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:36,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:34:36,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:36,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:34:36,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:36,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:34:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:36,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:36,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:36,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:34:36,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:36,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 22:34:36,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:36,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:36,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:34:36,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:36,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:34:36,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:36,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:34:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:36,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:36,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:36,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 22:34:36,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:36,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 22:34:36,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:36,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:34:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:34:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:34:36,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:36,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-14 22:34:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:36,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:36,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:36,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:34:36,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:36,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 22:34:36,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:36,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:36,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:34:36,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:34:36,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:34:36,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:36,853 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 204 proven. 70 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-14 22:34:36,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638390023] [2020-10-14 22:34:36,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:34:36,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:34:36,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475637498] [2020-10-14 22:34:36,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:34:36,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:34:36,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:34:36,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:34:36,857 INFO L87 Difference]: Start difference. First operand 21949 states and 26982 transitions. Second operand 7 states. [2020-10-14 22:34:58,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:34:58,814 INFO L93 Difference]: Finished difference Result 50720 states and 64329 transitions. [2020-10-14 22:34:58,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:34:58,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 359 [2020-10-14 22:34:58,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:34:58,948 INFO L225 Difference]: With dead ends: 50720 [2020-10-14 22:34:58,949 INFO L226 Difference]: Without dead ends: 28777 [2020-10-14 22:34:59,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:34:59,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28777 states. [2020-10-14 22:34:59,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28777 to 27349. [2020-10-14 22:34:59,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27349 states. [2020-10-14 22:34:59,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27349 states to 27349 states and 34846 transitions. [2020-10-14 22:34:59,714 INFO L78 Accepts]: Start accepts. Automaton has 27349 states and 34846 transitions. Word has length 359 [2020-10-14 22:34:59,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:34:59,715 INFO L479 AbstractCegarLoop]: Abstraction has 27349 states and 34846 transitions. [2020-10-14 22:34:59,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:34:59,715 INFO L276 IsEmpty]: Start isEmpty. Operand 27349 states and 34846 transitions. [2020-10-14 22:34:59,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-14 22:34:59,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:34:59,728 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 22:34:59,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:34:59,729 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:34:59,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:34:59,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1012303893, now seen corresponding path program 1 times [2020-10-14 22:34:59,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:34:59,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817315677] [2020-10-14 22:34:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:34:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:59,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:00,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:00,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:02,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:04,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:04,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-14 22:35:04,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:35:04,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-14 22:35:04,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:04,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:35:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:35:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-14 22:35:04,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:05,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:35:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:05,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:05,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:05,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:35:05,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:05,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:35:05,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:05,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:05,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:35:05,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:05,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:35:05,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:05,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:35:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:05,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:05,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:05,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:35:05,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:05,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 22:35:05,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:05,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:05,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:35:05,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:35:05,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:35:05,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:05,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:35:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:05,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:05,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:05,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:35:05,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 22:35:05,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:05,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:35:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:35:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:35:05,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:05,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:35:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:05,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:05,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:05,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:35:05,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:05,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 22:35:05,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:05,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:05,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:35:05,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:35:05,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:35:05,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:05,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-14 22:35:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:05,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:06,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:06,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:35:06,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:06,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 22:35:06,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:06,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:35:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:35:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:35:06,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:06,240 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 113 proven. 373 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 22:35:06,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817315677] [2020-10-14 22:35:06,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:35:06,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 22:35:06,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534850208] [2020-10-14 22:35:06,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 22:35:06,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:35:06,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 22:35:06,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:35:06,243 INFO L87 Difference]: Start difference. First operand 27349 states and 34846 transitions. Second operand 12 states. [2020-10-14 22:35:15,929 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2020-10-14 22:35:17,471 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2020-10-14 22:35:21,270 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-10-14 22:35:36,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:35:36,283 INFO L93 Difference]: Finished difference Result 58808 states and 74599 transitions. [2020-10-14 22:35:36,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 22:35:36,286 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 366 [2020-10-14 22:35:36,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:35:36,407 INFO L225 Difference]: With dead ends: 58808 [2020-10-14 22:35:36,408 INFO L226 Difference]: Without dead ends: 31465 [2020-10-14 22:35:36,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=190, Invalid=622, Unknown=0, NotChecked=0, Total=812 [2020-10-14 22:35:36,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31465 states. [2020-10-14 22:35:37,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31465 to 31299. [2020-10-14 22:35:37,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31299 states. [2020-10-14 22:35:37,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31299 states to 31299 states and 39172 transitions. [2020-10-14 22:35:37,155 INFO L78 Accepts]: Start accepts. Automaton has 31299 states and 39172 transitions. Word has length 366 [2020-10-14 22:35:37,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:35:37,156 INFO L479 AbstractCegarLoop]: Abstraction has 31299 states and 39172 transitions. [2020-10-14 22:35:37,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 22:35:37,156 INFO L276 IsEmpty]: Start isEmpty. Operand 31299 states and 39172 transitions. [2020-10-14 22:35:37,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-14 22:35:37,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:35:37,329 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:35:37,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:35:37,329 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:35:37,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:35:37,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1602196183, now seen corresponding path program 1 times [2020-10-14 22:35:37,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:35:37,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726746580] [2020-10-14 22:35:37,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:35:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:37,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:37,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:39,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:39,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-14 22:35:39,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:35:39,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2130 [2020-10-14 22:35:39,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:39,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:35:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 294 [2020-10-14 22:35:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 22:35:39,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:39,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:35:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:39,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:39,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:39,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:35:39,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:39,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:35:39,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:39,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:39,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:35:39,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:39,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:35:39,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:39,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:35:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:39,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:39,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:39,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:35:39,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:39,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 22:35:39,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:39,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:39,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:35:39,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:39,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:35:39,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:39,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:35:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:39,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:39,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:39,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:35:39,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 22:35:39,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:39,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:35:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:35:39,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:39,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:35:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:39,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:39,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:39,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 22:35:39,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:39,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 22:35:39,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:39,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:35:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 22:35:39,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:39,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-14 22:35:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:40,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:40,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:40,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:35:40,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:40,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 22:35:40,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:40,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:40,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:35:40,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:35:40,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:35:40,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:40,169 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-14 22:35:40,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726746580] [2020-10-14 22:35:40,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:35:40,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:35:40,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272071601] [2020-10-14 22:35:40,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:35:40,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:35:40,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:35:40,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:35:40,171 INFO L87 Difference]: Start difference. First operand 31299 states and 39172 transitions. Second operand 7 states.