/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_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:38:51,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:38:51,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:38:51,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:38:51,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:38:51,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:38:51,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:38:51,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:38:51,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:38:51,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:38:51,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:38:51,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:38:51,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:38:51,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:38:51,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:38:51,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:38:51,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:38:51,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:38:51,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:38:51,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:38:51,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:38:51,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:38:51,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:38:51,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:38:51,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:38:51,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:38:51,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:38:51,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:38:51,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:38:51,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:38:51,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:38:51,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:38:51,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:38:51,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:38:51,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:38:51,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:38:51,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:38:51,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:38:51,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:38:51,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:38:51,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:38:51,527 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 22:38:51,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:38:51,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:38:51,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:38:51,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:38:51,553 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:38:51,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:38:51,553 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:38:51,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:38:51,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:38:51,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:38:51,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:38:51,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:38:51,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:38:51,555 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:38:51,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:38:51,555 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:38:51,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:38:51,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:38:51,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:38:51,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:38:51,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:38:51,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:38:51,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:38:51,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:38:51,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:38:51,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:38:51,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:38:51,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:38:51,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:38:51,558 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 22:38:51,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:38:51,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:38:51,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:38:51,894 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:38:51,895 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:38:51,896 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label57.c [2020-10-14 22:38:51,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3838bace7/ba9551ca2c41437ea7de65864d67e028/FLAG9c88cba7b [2020-10-14 22:38:52,858 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:38:52,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label57.c [2020-10-14 22:38:52,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3838bace7/ba9551ca2c41437ea7de65864d67e028/FLAG9c88cba7b [2020-10-14 22:38:53,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3838bace7/ba9551ca2c41437ea7de65864d67e028 [2020-10-14 22:38:53,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:38:53,395 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:38:53,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:38:53,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:38:53,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:38:53,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:38:53" (1/1) ... [2020-10-14 22:38:53,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@255420c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:53, skipping insertion in model container [2020-10-14 22:38:53,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:38:53" (1/1) ... [2020-10-14 22:38:53,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:38:53,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:38:54,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:38:54,809 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:38:55,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:38:55,296 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:38:55,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:55 WrapperNode [2020-10-14 22:38:55,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:38:55,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:38:55,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:38:55,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:38:55,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:55" (1/1) ... [2020-10-14 22:38:55,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:55" (1/1) ... [2020-10-14 22:38:55,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:55" (1/1) ... [2020-10-14 22:38:55,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:55" (1/1) ... [2020-10-14 22:38:55,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:55" (1/1) ... [2020-10-14 22:38:55,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:55" (1/1) ... [2020-10-14 22:38:55,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:55" (1/1) ... [2020-10-14 22:38:55,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:38:55,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:38:55,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:38:55,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:38:55,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:55" (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 22:38:55,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:38:55,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:38:55,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:38:55,641 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:38:55,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:38:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:38:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:38:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:38:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:38:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:38:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:38:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:38:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:39:04,632 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:39:04,633 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:39:04,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:39:04 BoogieIcfgContainer [2020-10-14 22:39:04,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:39:04,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:39:04,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:39:04,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:39:04,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:38:53" (1/3) ... [2020-10-14 22:39:04,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9c4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:39:04, skipping insertion in model container [2020-10-14 22:39:04,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:38:55" (2/3) ... [2020-10-14 22:39:04,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9c4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:39:04, skipping insertion in model container [2020-10-14 22:39:04,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:39:04" (3/3) ... [2020-10-14 22:39:04,654 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label57.c [2020-10-14 22:39:04,668 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:39:04,679 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:39:04,696 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:39:04,730 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:39:04,730 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:39:04,731 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:39:04,731 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:39:04,731 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:39:04,731 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:39:04,731 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:39:04,731 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:39:04,768 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:39:04,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 22:39:04,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:39:04,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:39:04,785 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:39:04,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:39:04,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1371385577, now seen corresponding path program 1 times [2020-10-14 22:39:04,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:39:04,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589436703] [2020-10-14 22:39:04,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:39:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:05,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:05,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:05,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 22:39:05,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:05,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-14 22:39:05,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:05,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:05,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:39:05,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:39:05,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 22:39:05,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:39:05,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:39:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:05,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:05,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:05,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:39:05,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:05,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 22:39:05,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:05,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:05,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:05,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:05,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:39:05,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:05,660 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 22:39:05,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589436703] [2020-10-14 22:39:05,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:39:05,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:39:05,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419844206] [2020-10-14 22:39:05,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:39:05,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:39:05,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:39:05,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:39:05,694 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:39:18,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:39:18,503 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-14 22:39:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:39:18,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-14 22:39:18,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:39:18,535 INFO L225 Difference]: With dead ends: 1689 [2020-10-14 22:39:18,535 INFO L226 Difference]: Without dead ends: 1009 [2020-10-14 22:39:18,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 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 22:39:18,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-14 22:39:18,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-14 22:39:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-14 22:39:18,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-14 22:39:18,668 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 23 [2020-10-14 22:39:18,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:39:18,668 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-14 22:39:18,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:39:18,669 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-14 22:39:18,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 22:39:18,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:39:18,674 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:39:18,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:39:18,675 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:39:18,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:39:18,675 INFO L82 PathProgramCache]: Analyzing trace with hash -341898657, now seen corresponding path program 1 times [2020-10-14 22:39:18,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:39:18,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350648066] [2020-10-14 22:39:18,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:39:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:18,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:19,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:19,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:19,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 22:39:19,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:39:19,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1151 [2020-10-14 22:39:19,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:19,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:39:19,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:39:19,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 22:39:19,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:19,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:39:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:19,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:19,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:19,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:39:19,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:19,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:39:19,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:19,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:19,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:19,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:39:19,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:19,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:39:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:20,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:20,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:20,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:39:20,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:20,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 22:39:20,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:20,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:20,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:20,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:20,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:39:20,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 22:39:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:39:20,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350648066] [2020-10-14 22:39:20,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:39:20,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:39:20,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347403872] [2020-10-14 22:39:20,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:39:20,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:39:20,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:39:20,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:39:20,323 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 7 states. [2020-10-14 22:39:34,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:39:34,227 INFO L93 Difference]: Finished difference Result 2450 states and 3898 transitions. [2020-10-14 22:39:34,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:39:34,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-14 22:39:34,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:39:34,237 INFO L225 Difference]: With dead ends: 2450 [2020-10-14 22:39:34,238 INFO L226 Difference]: Without dead ends: 1465 [2020-10-14 22:39:34,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:39:34,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2020-10-14 22:39:34,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1432. [2020-10-14 22:39:34,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1432 states. [2020-10-14 22:39:34,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1858 transitions. [2020-10-14 22:39:34,285 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1858 transitions. Word has length 94 [2020-10-14 22:39:34,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:39:34,286 INFO L479 AbstractCegarLoop]: Abstraction has 1432 states and 1858 transitions. [2020-10-14 22:39:34,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:39:34,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1858 transitions. [2020-10-14 22:39:34,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 22:39:34,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:39:34,290 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:39:34,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:39:34,290 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:39:34,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:39:34,291 INFO L82 PathProgramCache]: Analyzing trace with hash 25810929, now seen corresponding path program 1 times [2020-10-14 22:39:34,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:39:34,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216240975] [2020-10-14 22:39:34,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:39:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:34,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:34,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 22:39:34,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:34,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 22:39:34,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:34,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:34,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:34,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 22:39:34,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 22:39:34,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:39:34,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:39:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:34,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:34,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:34,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:39:34,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:34,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:39:34,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:34,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:39:34,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:34,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:39:34,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:39:34,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:39:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:34,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:34,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:34,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:39:34,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:34,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 22:39:34,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:34,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:34,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:34,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:34,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:39:34,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:39:34,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216240975] [2020-10-14 22:39:34,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:39:34,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:39:34,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719117490] [2020-10-14 22:39:34,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:39:34,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:39:34,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:39:34,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:39:34,791 INFO L87 Difference]: Start difference. First operand 1432 states and 1858 transitions. Second operand 5 states. [2020-10-14 22:39:49,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:39:49,881 INFO L93 Difference]: Finished difference Result 3332 states and 4573 transitions. [2020-10-14 22:39:49,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:39:49,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-14 22:39:49,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:39:49,894 INFO L225 Difference]: With dead ends: 3332 [2020-10-14 22:39:49,894 INFO L226 Difference]: Without dead ends: 1893 [2020-10-14 22:39:49,899 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 22:39:49,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2020-10-14 22:39:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1883. [2020-10-14 22:39:49,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1883 states. [2020-10-14 22:39:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 2301 transitions. [2020-10-14 22:39:49,959 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 2301 transitions. Word has length 97 [2020-10-14 22:39:49,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:39:49,960 INFO L479 AbstractCegarLoop]: Abstraction has 1883 states and 2301 transitions. [2020-10-14 22:39:49,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:39:49,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 2301 transitions. [2020-10-14 22:39:49,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 22:39:49,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:39:49,974 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:39:49,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:39:49,978 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:39:49,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:39:49,979 INFO L82 PathProgramCache]: Analyzing trace with hash 374388173, now seen corresponding path program 1 times [2020-10-14 22:39:49,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:39:49,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978535763] [2020-10-14 22:39:49,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:39:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:50,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:50,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:51,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:51,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-14 22:39:51,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:39:51,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1277 [2020-10-14 22:39:51,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:51,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:39:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:39:51,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:51,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:39:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:51,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:51,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:51,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:39:51,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:51,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:39:51,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:51,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:51,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:39:51,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:51,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:39:51,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:51,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:39:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:51,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:51,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:51,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:39:51,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:51,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 22:39:51,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:51,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:39:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:39:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:39:51,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:51,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:39:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:39:51,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:39:51,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:39:51,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 22:39:51,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:39:51,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 22:39:51,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:39:51,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:39:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:39:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:39:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:39:51,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:39:51,811 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:39:51,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978535763] [2020-10-14 22:39:51,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:39:51,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:39:51,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004742276] [2020-10-14 22:39:51,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:39:51,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:39:51,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:39:51,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:39:51,820 INFO L87 Difference]: Start difference. First operand 1883 states and 2301 transitions. Second operand 7 states. [2020-10-14 22:40:06,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:40:06,633 INFO L93 Difference]: Finished difference Result 4251 states and 5495 transitions. [2020-10-14 22:40:06,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:40:06,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 183 [2020-10-14 22:40:06,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:40:06,712 INFO L225 Difference]: With dead ends: 4251 [2020-10-14 22:40:06,712 INFO L226 Difference]: Without dead ends: 2807 [2020-10-14 22:40:06,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:40:06,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2020-10-14 22:40:06,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2791. [2020-10-14 22:40:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2791 states. [2020-10-14 22:40:06,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3418 transitions. [2020-10-14 22:40:06,792 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3418 transitions. Word has length 183 [2020-10-14 22:40:06,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:40:06,793 INFO L479 AbstractCegarLoop]: Abstraction has 2791 states and 3418 transitions. [2020-10-14 22:40:06,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:40:06,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3418 transitions. [2020-10-14 22:40:06,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 22:40:06,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:40:06,796 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:40:06,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:40:06,797 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:40:06,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:40:06,797 INFO L82 PathProgramCache]: Analyzing trace with hash -2123365615, now seen corresponding path program 1 times [2020-10-14 22:40:06,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:40:06,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663963436] [2020-10-14 22:40:06,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:40:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:06,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:07,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:07,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:09,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:09,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:09,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 22:40:09,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:40:09,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3004 [2020-10-14 22:40:09,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:09,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:40:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:40:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:40:09,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:09,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:40:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:09,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:09,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:09,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:40:09,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:09,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:40:09,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:09,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:09,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:40:09,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:09,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:40:09,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:09,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:40:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:10,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:10,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:10,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:40:10,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 22:40:10,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:10,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:40:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:40:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:40:10,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:10,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:40:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:10,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:10,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:10,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:40:10,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:10,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 22:40:10,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:10,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:10,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:40:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:40:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:40:10,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:40:10,570 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 22:40:10,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663963436] [2020-10-14 22:40:10,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:40:10,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:40:10,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161738653] [2020-10-14 22:40:10,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:40:10,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:40:10,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:40:10,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:40:10,573 INFO L87 Difference]: Start difference. First operand 2791 states and 3418 transitions. Second operand 9 states. [2020-10-14 22:40:27,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:40:27,292 INFO L93 Difference]: Finished difference Result 9842 states and 12817 transitions. [2020-10-14 22:40:27,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 22:40:27,294 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 185 [2020-10-14 22:40:27,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:40:27,328 INFO L225 Difference]: With dead ends: 9842 [2020-10-14 22:40:27,328 INFO L226 Difference]: Without dead ends: 7020 [2020-10-14 22:40:27,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-14 22:40:27,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7020 states. [2020-10-14 22:40:27,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7020 to 6947. [2020-10-14 22:40:27,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6947 states. [2020-10-14 22:40:27,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6947 states to 6947 states and 8564 transitions. [2020-10-14 22:40:27,500 INFO L78 Accepts]: Start accepts. Automaton has 6947 states and 8564 transitions. Word has length 185 [2020-10-14 22:40:27,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:40:27,501 INFO L479 AbstractCegarLoop]: Abstraction has 6947 states and 8564 transitions. [2020-10-14 22:40:27,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:40:27,501 INFO L276 IsEmpty]: Start isEmpty. Operand 6947 states and 8564 transitions. [2020-10-14 22:40:27,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-14 22:40:27,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:40:27,505 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:40:27,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:40:27,505 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:40:27,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:40:27,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1783426780, now seen corresponding path program 1 times [2020-10-14 22:40:27,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:40:27,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980839558] [2020-10-14 22:40:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:40:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:27,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:27,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:29,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:29,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-14 22:40:29,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:40:29,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2036 [2020-10-14 22:40:29,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:29,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:29,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:40:29,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:40:29,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:40:29,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:40:29,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:40:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:29,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:29,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:29,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:40:29,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:29,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:40:29,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:29,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:29,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:40:29,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:29,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:40:29,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:29,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:40:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:29,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:29,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:29,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:40:29,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:29,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 22:40:29,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:29,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:40:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:29,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:40:29,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:29,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:40:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:29,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:30,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:30,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:40:30,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:30,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 22:40:30,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:30,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:30,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:40:30,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:40:30,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:40:30,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:40:30,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980839558] [2020-10-14 22:40:30,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:40:30,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:40:30,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027489087] [2020-10-14 22:40:30,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:40:30,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:40:30,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:40:30,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:40:30,430 INFO L87 Difference]: Start difference. First operand 6947 states and 8564 transitions. Second operand 7 states. [2020-10-14 22:40:46,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:40:46,076 INFO L93 Difference]: Finished difference Result 14919 states and 18461 transitions. [2020-10-14 22:40:46,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:40:46,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2020-10-14 22:40:46,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:40:46,115 INFO L225 Difference]: With dead ends: 14919 [2020-10-14 22:40:46,115 INFO L226 Difference]: Without dead ends: 8411 [2020-10-14 22:40:46,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 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 22:40:46,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8411 states. [2020-10-14 22:40:46,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8411 to 8360. [2020-10-14 22:40:46,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8360 states. [2020-10-14 22:40:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8360 states to 8360 states and 10217 transitions. [2020-10-14 22:40:46,333 INFO L78 Accepts]: Start accepts. Automaton has 8360 states and 10217 transitions. Word has length 219 [2020-10-14 22:40:46,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:40:46,334 INFO L479 AbstractCegarLoop]: Abstraction has 8360 states and 10217 transitions. [2020-10-14 22:40:46,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:40:46,334 INFO L276 IsEmpty]: Start isEmpty. Operand 8360 states and 10217 transitions. [2020-10-14 22:40:46,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-14 22:40:46,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:40:46,339 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:40:46,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:40:46,339 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:40:46,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:40:46,340 INFO L82 PathProgramCache]: Analyzing trace with hash -244875308, now seen corresponding path program 1 times [2020-10-14 22:40:46,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:40:46,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57760668] [2020-10-14 22:40:46,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:40:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:46,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:46,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:48,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:49,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:49,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:40:49,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:40:49,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2864 [2020-10-14 22:40:49,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:49,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:49,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:40:49,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:40:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-14 22:40:49,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:49,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:40:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:49,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:49,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:40:49,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:49,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:40:49,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:49,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:49,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:40:49,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:40:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:40:49,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:49,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:40:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:49,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:49,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:49,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:40:49,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:49,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-14 22:40:49,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:49,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:40:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:40:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:40:49,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:49,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:40:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:40:49,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:40:50,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:40:50,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 22:40:50,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:40:50,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-14 22:40:50,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:40:50,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:40:50,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:40:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:40:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 22:40:50,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:40:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 33 proven. 85 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:40:50,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57760668] [2020-10-14 22:40:50,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:40:50,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:40:50,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544772063] [2020-10-14 22:40:50,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:40:50,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:40:50,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:40:50,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:40:50,835 INFO L87 Difference]: Start difference. First operand 8360 states and 10217 transitions. Second operand 10 states. [2020-10-14 22:41:10,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:41:10,362 INFO L93 Difference]: Finished difference Result 17004 states and 21733 transitions. [2020-10-14 22:41:10,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 22:41:10,364 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 262 [2020-10-14 22:41:10,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:41:10,403 INFO L225 Difference]: With dead ends: 17004 [2020-10-14 22:41:10,403 INFO L226 Difference]: Without dead ends: 9083 [2020-10-14 22:41:10,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-10-14 22:41:10,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9083 states. [2020-10-14 22:41:10,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9083 to 8845. [2020-10-14 22:41:10,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8845 states. [2020-10-14 22:41:10,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8845 states to 8845 states and 10740 transitions. [2020-10-14 22:41:10,702 INFO L78 Accepts]: Start accepts. Automaton has 8845 states and 10740 transitions. Word has length 262 [2020-10-14 22:41:10,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:41:10,703 INFO L479 AbstractCegarLoop]: Abstraction has 8845 states and 10740 transitions. [2020-10-14 22:41:10,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:41:10,703 INFO L276 IsEmpty]: Start isEmpty. Operand 8845 states and 10740 transitions. [2020-10-14 22:41:10,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-14 22:41:10,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:41:10,708 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:41:10,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:41:10,708 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:41:10,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:41:10,709 INFO L82 PathProgramCache]: Analyzing trace with hash -302339410, now seen corresponding path program 1 times [2020-10-14 22:41:10,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:41:10,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981942791] [2020-10-14 22:41:10,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:41:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:10,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:10,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:11,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:14,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:14,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:41:14,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:41:14,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3410 [2020-10-14 22:41:14,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:14,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:41:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:41:14,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 22:41:14,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:14,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:41:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:14,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:14,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:14,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:41:14,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:14,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:41:14,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:14,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:14,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:41:14,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:14,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:41:14,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:14,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:41:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:14,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:14,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:14,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:41:14,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:14,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 22:41:14,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:14,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:41:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:41:14,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:14,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:41:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:14,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:14,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:14,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:14,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:41:14,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:41:14,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-14 22:41:14,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:14,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:14,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:41:14,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:14,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:41:14,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:14,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:41:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:14,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:15,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:15,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 22:41:15,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:15,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 22:41:15,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:15,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:15,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:41:15,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:41:15,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 22:41:15,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 196 proven. 4 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 22:41:15,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981942791] [2020-10-14 22:41:15,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:41:15,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:41:15,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063837063] [2020-10-14 22:41:15,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:41:15,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:41:15,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:41:15,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:41:15,177 INFO L87 Difference]: Start difference. First operand 8845 states and 10740 transitions. Second operand 7 states. [2020-10-14 22:41:32,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:41:32,604 INFO L93 Difference]: Finished difference Result 17722 states and 22032 transitions. [2020-10-14 22:41:32,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:41:32,607 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-14 22:41:32,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:41:32,642 INFO L225 Difference]: With dead ends: 17722 [2020-10-14 22:41:32,642 INFO L226 Difference]: Without dead ends: 9751 [2020-10-14 22:41:32,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:41:32,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9751 states. [2020-10-14 22:41:32,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9751 to 9727. [2020-10-14 22:41:32,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9727 states. [2020-10-14 22:41:32,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9727 states to 9727 states and 11860 transitions. [2020-10-14 22:41:32,899 INFO L78 Accepts]: Start accepts. Automaton has 9727 states and 11860 transitions. Word has length 273 [2020-10-14 22:41:32,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:41:32,899 INFO L479 AbstractCegarLoop]: Abstraction has 9727 states and 11860 transitions. [2020-10-14 22:41:32,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:41:32,900 INFO L276 IsEmpty]: Start isEmpty. Operand 9727 states and 11860 transitions. [2020-10-14 22:41:32,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-14 22:41:32,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:41:32,911 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 22:41:32,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:41:32,912 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:41:32,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:41:32,912 INFO L82 PathProgramCache]: Analyzing trace with hash -728682956, now seen corresponding path program 1 times [2020-10-14 22:41:32,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:41:32,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604539572] [2020-10-14 22:41:32,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:41:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:33,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:33,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:33,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:38,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:38,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-14 22:41:38,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:41:38,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 22:41:38,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:38,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:38,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:41:38,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:41:38,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:41:38,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:41:38,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:41:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:38,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:38,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:38,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:41:38,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:38,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:41:38,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:38,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:41:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:41:38,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:38,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:41:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:38,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:38,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:38,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:41:38,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:38,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 22:41:38,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:38,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:41:38,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:38,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:41:38,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:38,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:41:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:38,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:38,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:38,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:41:38,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:38,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 22:41:38,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:38,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:38,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:41:38,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:41:38,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:41:38,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:38,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:41:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:38,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:38,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:38,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 22:41:38,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:38,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 22:41:38,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:38,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:38,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:41:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:41:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:41:38,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:41:38,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-14 22:41:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:38,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:38,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:41:38,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:41:38,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:41:38,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 22:41:38,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:41:38,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:41:38,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:41:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:41:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:41:38,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:41:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 244 proven. 70 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-14 22:41:38,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604539572] [2020-10-14 22:41:38,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:41:38,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:41:38,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078119735] [2020-10-14 22:41:38,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:41:38,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:41:38,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:41:38,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:41:38,926 INFO L87 Difference]: Start difference. First operand 9727 states and 11860 transitions. Second operand 7 states. [2020-10-14 22:41:59,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:41:59,035 INFO L93 Difference]: Finished difference Result 22380 states and 28595 transitions. [2020-10-14 22:41:59,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:41:59,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-10-14 22:41:59,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:41:59,087 INFO L225 Difference]: With dead ends: 22380 [2020-10-14 22:41:59,088 INFO L226 Difference]: Without dead ends: 13527 [2020-10-14 22:41:59,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:41:59,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13527 states. [2020-10-14 22:41:59,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13527 to 12957. [2020-10-14 22:41:59,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12957 states. [2020-10-14 22:41:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12957 states to 12957 states and 16376 transitions. [2020-10-14 22:41:59,382 INFO L78 Accepts]: Start accepts. Automaton has 12957 states and 16376 transitions. Word has length 369 [2020-10-14 22:41:59,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:41:59,383 INFO L479 AbstractCegarLoop]: Abstraction has 12957 states and 16376 transitions. [2020-10-14 22:41:59,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:41:59,384 INFO L276 IsEmpty]: Start isEmpty. Operand 12957 states and 16376 transitions. [2020-10-14 22:41:59,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 22:41:59,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:41:59,392 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 22:41:59,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:41:59,392 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:41:59,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:41:59,393 INFO L82 PathProgramCache]: Analyzing trace with hash 826820243, now seen corresponding path program 1 times [2020-10-14 22:41:59,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:41:59,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228010104] [2020-10-14 22:41:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:41:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:41:59,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:59,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:41:59,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:02,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:04,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:04,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-14 22:42:04,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:42:04,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 22:42:04,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:04,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:04,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:42:04,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:42:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 292 [2020-10-14 22:42:04,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:42:04,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:42:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:04,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:04,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:04,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:42:04,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:04,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:42:04,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:04,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:04,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:42:04,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:42:04,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:42:04,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:42:04,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:42:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:04,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:04,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:04,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:42:04,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:04,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-14 22:42:04,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:04,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:42:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:42:04,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:42:04,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:42:05,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:42:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:05,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:05,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:05,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:42:05,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:05,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 22:42:05,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:05,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:05,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:42:05,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:42:05,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:42:05,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:42:05,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:42:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:05,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:05,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:05,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:42:05,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:05,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-14 22:42:05,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:05,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:05,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:42:05,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:42:05,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:42:05,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:42:05,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-14 22:42:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:05,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:06,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:06,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:42:06,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:06,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 22:42:06,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:06,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:42:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 22:42:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:42:06,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:42:06,230 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 159 proven. 363 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 22:42:06,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228010104] [2020-10-14 22:42:06,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:42:06,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 22:42:06,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645287940] [2020-10-14 22:42:06,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 22:42:06,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:42:06,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 22:42:06,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:42:06,233 INFO L87 Difference]: Start difference. First operand 12957 states and 16376 transitions. Second operand 11 states. [2020-10-14 22:42:40,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:42:40,140 INFO L93 Difference]: Finished difference Result 32778 states and 41523 transitions. [2020-10-14 22:42:40,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 22:42:40,142 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 376 [2020-10-14 22:42:40,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:42:40,199 INFO L225 Difference]: With dead ends: 32778 [2020-10-14 22:42:40,199 INFO L226 Difference]: Without dead ends: 20695 [2020-10-14 22:42:40,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=254, Invalid=936, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 22:42:40,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20695 states. [2020-10-14 22:42:40,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20695 to 16955. [2020-10-14 22:42:40,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16955 states. [2020-10-14 22:42:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16955 states to 16955 states and 21250 transitions. [2020-10-14 22:42:40,594 INFO L78 Accepts]: Start accepts. Automaton has 16955 states and 21250 transitions. Word has length 376 [2020-10-14 22:42:40,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:42:40,595 INFO L479 AbstractCegarLoop]: Abstraction has 16955 states and 21250 transitions. [2020-10-14 22:42:40,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 22:42:40,595 INFO L276 IsEmpty]: Start isEmpty. Operand 16955 states and 21250 transitions. [2020-10-14 22:42:40,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-10-14 22:42:40,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:42:40,603 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 22:42:40,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:42:40,603 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:42:40,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:42:40,604 INFO L82 PathProgramCache]: Analyzing trace with hash 269091455, now seen corresponding path program 1 times [2020-10-14 22:42:40,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:42:40,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573245929] [2020-10-14 22:42:40,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:42:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:40,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:41,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:41,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:42,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:43,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:43,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-14 22:42:43,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:42:43,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2341 [2020-10-14 22:42:43,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:43,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:43,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:42:43,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 294 [2020-10-14 22:42:43,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 22:42:43,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:42:43,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:42:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:43,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:43,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:43,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:42:43,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:43,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:42:43,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:43,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:42:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:42:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:42:43,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:42:43,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:42:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:43,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:43,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:43,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:42:43,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:43,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:42:43,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:43,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:42:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:42:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:42:43,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:42:43,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:42:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:43,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:43,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:43,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:42:43,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:43,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 22:42:43,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:43,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:43,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:42:43,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:42:43,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:42:43,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:42:43,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:42:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:43,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:43,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:43,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 22:42:43,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:42:43,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 22:42:43,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:43,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:43,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:42:43,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:42:43,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 22:42:43,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:42:43,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-14 22:42:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:42:43,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:43,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:42:43,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:42:43,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:42:43,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:42:43,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 22:42:43,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:42:43,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:42:43,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:42:43,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:42:43,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:42:43,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:42:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 270 proven. 18 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-10-14 22:42:43,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573245929] [2020-10-14 22:42:43,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:42:43,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:42:43,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374399016] [2020-10-14 22:42:43,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:42:43,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:42:43,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:42:43,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:42:43,697 INFO L87 Difference]: Start difference. First operand 16955 states and 21250 transitions. Second operand 6 states.