/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/Problem03_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:13:19,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:13:19,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:13:19,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:13:19,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:13:19,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:13:19,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:13:19,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:13:19,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:13:19,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:13:19,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:13:19,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:13:19,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:13:19,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:13:19,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:13:19,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:13:19,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:13:19,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:13:19,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:13:19,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:13:19,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:13:19,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:13:19,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:13:19,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:13:19,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:13:19,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:13:19,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:13:19,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:13:19,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:13:19,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:13:19,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:13:19,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:13:19,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:13:19,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:13:19,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:13:19,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:13:19,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:13:19,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:13:19,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:13:19,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:13:19,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:13:19,317 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 19:13:19,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:13:19,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:13:19,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:13:19,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:13:19,365 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:13:19,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:13:19,366 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:13:19,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:13:19,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:13:19,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:13:19,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:13:19,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:13:19,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:13:19,368 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:13:19,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:13:19,369 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:13:19,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:13:19,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:13:19,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:13:19,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:13:19,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:13:19,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:13:19,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:13:19,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:13:19,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:13:19,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:13:19,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:13:19,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:13:19,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:13:19,371 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 19:13:19,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:13:19,710 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:13:19,714 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:13:19,716 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:13:19,717 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:13:19,717 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label34.c [2020-10-14 19:13:19,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f4d601d9/f76ca359c91b4923b2985fade9570a9a/FLAG25fa7762e [2020-10-14 19:13:20,483 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:13:20,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label34.c [2020-10-14 19:13:20,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f4d601d9/f76ca359c91b4923b2985fade9570a9a/FLAG25fa7762e [2020-10-14 19:13:20,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f4d601d9/f76ca359c91b4923b2985fade9570a9a [2020-10-14 19:13:20,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:13:20,702 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:13:20,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:13:20,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:13:20,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:13:20,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:13:20" (1/1) ... [2020-10-14 19:13:20,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:20, skipping insertion in model container [2020-10-14 19:13:20,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:13:20" (1/1) ... [2020-10-14 19:13:20,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:13:20,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:13:21,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:13:21,612 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:13:21,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:13:21,956 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:13:21,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:21 WrapperNode [2020-10-14 19:13:21,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:13:21,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:13:21,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:13:21,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:13:21,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:21" (1/1) ... [2020-10-14 19:13:21,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:21" (1/1) ... [2020-10-14 19:13:22,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:21" (1/1) ... [2020-10-14 19:13:22,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:21" (1/1) ... [2020-10-14 19:13:22,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:21" (1/1) ... [2020-10-14 19:13:22,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:21" (1/1) ... [2020-10-14 19:13:22,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:21" (1/1) ... [2020-10-14 19:13:22,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:13:22,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:13:22,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:13:22,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:13:22,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:21" (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 19:13:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:13:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:13:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:13:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:13:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:13:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:13:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:13:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:13:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:13:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:13:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:13:24,033 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:13:24,033 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:13:24,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:13:24 BoogieIcfgContainer [2020-10-14 19:13:24,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:13:24,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:13:24,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:13:24,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:13:24,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:13:20" (1/3) ... [2020-10-14 19:13:24,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36086767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:13:24, skipping insertion in model container [2020-10-14 19:13:24,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:13:21" (2/3) ... [2020-10-14 19:13:24,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36086767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:13:24, skipping insertion in model container [2020-10-14 19:13:24,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:13:24" (3/3) ... [2020-10-14 19:13:24,049 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label34.c [2020-10-14 19:13:24,060 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:13:24,069 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:13:24,084 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:13:24,112 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:13:24,112 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:13:24,112 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:13:24,112 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:13:24,113 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:13:24,113 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:13:24,113 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:13:24,113 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:13:24,139 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 19:13:24,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 19:13:24,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:24,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:24,158 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:24,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:24,165 INFO L82 PathProgramCache]: Analyzing trace with hash -476273699, now seen corresponding path program 1 times [2020-10-14 19:13:24,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:24,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423536134] [2020-10-14 19:13:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:24,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:25,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:29,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:29,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 19:13:29,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:13:29,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4805 [2020-10-14 19:13:29,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:29,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:29,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:13:29,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:13:29,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-14 19:13:29,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:13:29,835 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:29,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:29,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:29,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:29,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:29,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:29,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 19:13:29,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:29,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:29,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:13:29,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:30,156 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 19:13:30,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423536134] [2020-10-14 19:13:30,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:13:30,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:13:30,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894301052] [2020-10-14 19:13:30,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:13:30,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:30,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:13:30,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:13:30,195 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 19:13:30,430 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:33,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:33,130 INFO L93 Difference]: Finished difference Result 884 states and 1536 transitions. [2020-10-14 19:13:33,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:13:33,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 196 [2020-10-14 19:13:33,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:33,153 INFO L225 Difference]: With dead ends: 884 [2020-10-14 19:13:33,153 INFO L226 Difference]: Without dead ends: 480 [2020-10-14 19:13:33,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:13:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-10-14 19:13:33,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 475. [2020-10-14 19:13:33,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-14 19:13:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 728 transitions. [2020-10-14 19:13:33,254 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 728 transitions. Word has length 196 [2020-10-14 19:13:33,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:33,256 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 728 transitions. [2020-10-14 19:13:33,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:13:33,256 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 728 transitions. [2020-10-14 19:13:33,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 19:13:33,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:33,263 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:33,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:13:33,263 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:33,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:33,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1141114042, now seen corresponding path program 1 times [2020-10-14 19:13:33,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:33,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269666264] [2020-10-14 19:13:33,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:33,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:33,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:34,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:35,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:36,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:36,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 19:13:36,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:13:36,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2725 [2020-10-14 19:13:36,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:36,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:36,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:13:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-14 19:13:36,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:36,474 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:36,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:36,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:36,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:36,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:36,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:36,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:13:36,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:36,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:36,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:36,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:13:36,630 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 19:13:36,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:36,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:36,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:36,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:13:36,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:36,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 19:13:36,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:36,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:36,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:36,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:36,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:13:36,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:13:37,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269666264] [2020-10-14 19:13:37,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:37,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:13:37,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237391682] [2020-10-14 19:13:37,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:13:37,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:37,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:13:37,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:13:37,111 INFO L87 Difference]: Start difference. First operand 475 states and 728 transitions. Second operand 5 states. [2020-10-14 19:13:37,406 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 19:13:39,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:39,953 INFO L93 Difference]: Finished difference Result 1137 states and 1792 transitions. [2020-10-14 19:13:39,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:13:39,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-14 19:13:39,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:39,962 INFO L225 Difference]: With dead ends: 1137 [2020-10-14 19:13:39,963 INFO L226 Difference]: Without dead ends: 618 [2020-10-14 19:13:39,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:13:39,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-14 19:13:40,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 613. [2020-10-14 19:13:40,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-10-14 19:13:40,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 872 transitions. [2020-10-14 19:13:40,008 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 872 transitions. Word has length 205 [2020-10-14 19:13:40,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:40,008 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 872 transitions. [2020-10-14 19:13:40,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:13:40,009 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 872 transitions. [2020-10-14 19:13:40,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-14 19:13:40,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:40,014 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:40,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:13:40,014 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:40,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:40,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1373204663, now seen corresponding path program 1 times [2020-10-14 19:13:40,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:40,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659460383] [2020-10-14 19:13:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:40,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:40,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:41,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:42,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:42,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 19:13:42,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:13:42,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2761 [2020-10-14 19:13:42,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:42,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:13:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-14 19:13:42,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:43,237 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:43,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:43,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:43,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:43,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:43,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:43,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:13:43,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:43,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:43,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:43,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:43,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:43,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:43,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:13:43,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:43,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 19:13:43,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:43,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:43,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:43,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:43,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:13:43,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:44,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:13:44,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659460383] [2020-10-14 19:13:44,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:44,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:13:44,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935722880] [2020-10-14 19:13:44,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:13:44,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:44,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:13:44,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:13:44,020 INFO L87 Difference]: Start difference. First operand 613 states and 872 transitions. Second operand 5 states. [2020-10-14 19:13:44,485 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 19:13:47,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:47,108 INFO L93 Difference]: Finished difference Result 1402 states and 2069 transitions. [2020-10-14 19:13:47,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:13:47,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 208 [2020-10-14 19:13:47,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:47,118 INFO L225 Difference]: With dead ends: 1402 [2020-10-14 19:13:47,118 INFO L226 Difference]: Without dead ends: 617 [2020-10-14 19:13:47,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:13:47,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-10-14 19:13:47,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 613. [2020-10-14 19:13:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-10-14 19:13:47,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 832 transitions. [2020-10-14 19:13:47,161 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 832 transitions. Word has length 208 [2020-10-14 19:13:47,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:47,162 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 832 transitions. [2020-10-14 19:13:47,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:13:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 832 transitions. [2020-10-14 19:13:47,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-14 19:13:47,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:47,168 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:47,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:13:47,168 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:47,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:47,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1272928285, now seen corresponding path program 1 times [2020-10-14 19:13:47,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:47,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845330297] [2020-10-14 19:13:47,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:47,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:47,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:49,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:49,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:49,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 19:13:49,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:13:49,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2262 [2020-10-14 19:13:49,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:49,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:49,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:49,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 19:13:49,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 19:13:49,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:49,708 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:49,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:49,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:49,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:49,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:49,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:49,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:13:49,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:49,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:49,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:49,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:49,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:49,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:49,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:49,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:49,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:49,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 19:13:49,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:49,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 19:13:49,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:49,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:49,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:49,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:49,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 19:13:49,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:13:49,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845330297] [2020-10-14 19:13:49,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:49,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:13:49,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089913124] [2020-10-14 19:13:49,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:13:49,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:49,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:13:49,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:13:49,981 INFO L87 Difference]: Start difference. First operand 613 states and 832 transitions. Second operand 5 states. [2020-10-14 19:13:50,332 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:52,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:52,723 INFO L93 Difference]: Finished difference Result 1646 states and 2301 transitions. [2020-10-14 19:13:52,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:13:52,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-14 19:13:52,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:52,731 INFO L225 Difference]: With dead ends: 1646 [2020-10-14 19:13:52,731 INFO L226 Difference]: Without dead ends: 1039 [2020-10-14 19:13:52,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:13:52,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-14 19:13:52,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1032. [2020-10-14 19:13:52,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-14 19:13:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1421 transitions. [2020-10-14 19:13:52,775 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1421 transitions. Word has length 214 [2020-10-14 19:13:52,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:52,776 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1421 transitions. [2020-10-14 19:13:52,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:13:52,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1421 transitions. [2020-10-14 19:13:52,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-14 19:13:52,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:52,782 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:52,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:13:52,783 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:52,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:52,783 INFO L82 PathProgramCache]: Analyzing trace with hash -833684822, now seen corresponding path program 1 times [2020-10-14 19:13:52,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:52,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780642571] [2020-10-14 19:13:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:52,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:53,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:54,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:55,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:55,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 19:13:55,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:13:55,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2364 [2020-10-14 19:13:55,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:55,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 19:13:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 19:13:55,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:55,486 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:55,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:55,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:55,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:55,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:55,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:55,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:13:55,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:55,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:55,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:55,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:55,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:55,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:55,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:55,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:55,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:13:55,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:55,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 19:13:55,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:55,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:55,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:55,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:55,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 19:13:55,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:13:55,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780642571] [2020-10-14 19:13:55,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:55,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:13:55,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388420141] [2020-10-14 19:13:55,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:13:55,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:55,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:13:55,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:13:55,756 INFO L87 Difference]: Start difference. First operand 1032 states and 1421 transitions. Second operand 5 states. [2020-10-14 19:13:55,979 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:58,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:58,358 INFO L93 Difference]: Finished difference Result 2484 states and 3492 transitions. [2020-10-14 19:13:58,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:13:58,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-14 19:13:58,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:58,368 INFO L225 Difference]: With dead ends: 2484 [2020-10-14 19:13:58,368 INFO L226 Difference]: Without dead ends: 1458 [2020-10-14 19:13:58,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:13:58,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2020-10-14 19:13:58,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1451. [2020-10-14 19:13:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1451 states. [2020-10-14 19:13:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 1919 transitions. [2020-10-14 19:13:58,426 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 1919 transitions. Word has length 220 [2020-10-14 19:13:58,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:58,427 INFO L479 AbstractCegarLoop]: Abstraction has 1451 states and 1919 transitions. [2020-10-14 19:13:58,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:13:58,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 1919 transitions. [2020-10-14 19:13:58,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 19:13:58,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:58,434 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:58,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:13:58,434 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:58,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:58,435 INFO L82 PathProgramCache]: Analyzing trace with hash -514903662, now seen corresponding path program 1 times [2020-10-14 19:13:58,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:58,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240851717] [2020-10-14 19:13:58,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:58,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:58,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:59,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:01,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:01,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:01,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 19:14:01,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:14:01,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3346 [2020-10-14 19:14:01,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:01,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:01,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:01,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 19:14:01,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 19:14:01,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:02,058 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:02,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:02,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:02,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:02,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:02,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:02,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:14:02,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:02,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:02,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:02,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:02,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:02,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:02,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 19:14:02,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:02,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 19:14:02,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:02,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 19:14:02,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:02,368 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:14:02,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240851717] [2020-10-14 19:14:02,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:02,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:14:02,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24260351] [2020-10-14 19:14:02,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:14:02,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:02,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:14:02,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:14:02,371 INFO L87 Difference]: Start difference. First operand 1451 states and 1919 transitions. Second operand 5 states. [2020-10-14 19:14:02,533 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:05,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:05,056 INFO L93 Difference]: Finished difference Result 4177 states and 5674 transitions. [2020-10-14 19:14:05,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:14:05,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2020-10-14 19:14:05,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:05,076 INFO L225 Difference]: With dead ends: 4177 [2020-10-14 19:14:05,076 INFO L226 Difference]: Without dead ends: 2732 [2020-10-14 19:14:05,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:14:05,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2020-10-14 19:14:05,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2710. [2020-10-14 19:14:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2710 states. [2020-10-14 19:14:05,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 3655 transitions. [2020-10-14 19:14:05,172 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 3655 transitions. Word has length 232 [2020-10-14 19:14:05,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:05,172 INFO L479 AbstractCegarLoop]: Abstraction has 2710 states and 3655 transitions. [2020-10-14 19:14:05,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:14:05,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 3655 transitions. [2020-10-14 19:14:05,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 19:14:05,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:05,182 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:05,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:14:05,183 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:05,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:05,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1946571678, now seen corresponding path program 1 times [2020-10-14 19:14:05,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:05,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967151818] [2020-10-14 19:14:05,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:05,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:05,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:06,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:06,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:08,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:10,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:10,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-14 19:14:10,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:14:10,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 19:14:10,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:10,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 19:14:10,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 19:14:10,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:10,480 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:10,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:10,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:10,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:10,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:10,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:10,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:14:10,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:10,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:10,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:10,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:10,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:10,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:10,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:10,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:10,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 19:14:10,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:10,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:14:10,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:10,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:10,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:10,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 19:14:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:10,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:10,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:10,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 19:14:10,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:10,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:14:10,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:10,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:10,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:10,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:10,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:14:10,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 19:14:10,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967151818] [2020-10-14 19:14:10,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:10,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:14:10,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543273520] [2020-10-14 19:14:10,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:14:10,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:10,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:14:10,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:14:10,713 INFO L87 Difference]: Start difference. First operand 2710 states and 3655 transitions. Second operand 5 states. [2020-10-14 19:14:10,874 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:14:13,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:13,205 INFO L93 Difference]: Finished difference Result 6679 states and 9223 transitions. [2020-10-14 19:14:13,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:14:13,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2020-10-14 19:14:13,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:13,231 INFO L225 Difference]: With dead ends: 6679 [2020-10-14 19:14:13,231 INFO L226 Difference]: Without dead ends: 3975 [2020-10-14 19:14:13,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:14:13,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2020-10-14 19:14:13,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3969. [2020-10-14 19:14:13,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3969 states. [2020-10-14 19:14:13,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3969 states to 3969 states and 5346 transitions. [2020-10-14 19:14:13,361 INFO L78 Accepts]: Start accepts. Automaton has 3969 states and 5346 transitions. Word has length 237 [2020-10-14 19:14:13,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:13,361 INFO L479 AbstractCegarLoop]: Abstraction has 3969 states and 5346 transitions. [2020-10-14 19:14:13,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:14:13,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3969 states and 5346 transitions. [2020-10-14 19:14:13,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-14 19:14:13,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:13,376 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:13,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:14:13,376 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:13,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:13,376 INFO L82 PathProgramCache]: Analyzing trace with hash 896497558, now seen corresponding path program 1 times [2020-10-14 19:14:13,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:13,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373073153] [2020-10-14 19:14:13,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:13,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:13,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:13,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:15,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:15,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:18,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:18,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-14 19:14:18,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:14:18,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 19:14:18,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:18,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:14:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:14:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-14 19:14:18,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:18,625 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:18,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:18,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:18,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:18,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:18,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:18,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:14:18,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:18,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:18,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:18,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:18,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:14:18,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:18,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:18,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:18,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:18,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:18,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 19:14:18,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:14:18,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 19:14:18,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:18,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:18,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:18,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:18,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 19:14:18,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:18,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 19:14:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:18,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:18,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:18,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:18,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:14:18,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:14:18,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 19:14:18,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:18,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 19:14:18,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 19:14:18,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373073153] [2020-10-14 19:14:18,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:18,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:14:18,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529155221] [2020-10-14 19:14:18,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:14:18,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:18,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:14:18,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:14:18,968 INFO L87 Difference]: Start difference. First operand 3969 states and 5346 transitions. Second operand 7 states. [2020-10-14 19:14:19,114 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:19,545 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:14:22,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:22,492 INFO L93 Difference]: Finished difference Result 15427 states and 22408 transitions. [2020-10-14 19:14:22,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:14:22,493 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-10-14 19:14:22,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:22,554 INFO L225 Difference]: With dead ends: 15427 [2020-10-14 19:14:22,554 INFO L226 Difference]: Without dead ends: 11464 [2020-10-14 19:14:22,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:14:22,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11464 states. [2020-10-14 19:14:22,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 9715. [2020-10-14 19:14:22,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9715 states. [2020-10-14 19:14:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9715 states to 9715 states and 13300 transitions. [2020-10-14 19:14:23,006 INFO L78 Accepts]: Start accepts. Automaton has 9715 states and 13300 transitions. Word has length 241 [2020-10-14 19:14:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:23,007 INFO L479 AbstractCegarLoop]: Abstraction has 9715 states and 13300 transitions. [2020-10-14 19:14:23,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:14:23,008 INFO L276 IsEmpty]: Start isEmpty. Operand 9715 states and 13300 transitions. [2020-10-14 19:14:23,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-14 19:14:23,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:23,047 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:23,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:14:23,047 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:23,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:23,047 INFO L82 PathProgramCache]: Analyzing trace with hash 554877003, now seen corresponding path program 1 times [2020-10-14 19:14:23,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:23,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82909705] [2020-10-14 19:14:23,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:23,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:23,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:23,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 19:14:23,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:23,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-10-14 19:14:23,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:23,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:23,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:14:23,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:14:23,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 19:14:23,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:24,043 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:24,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:24,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:24,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:24,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:14:24,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:24,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:14:24,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:24,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:24,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:24,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:24,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 19:14:24,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:24,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 19:14:24,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:24,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:24,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:24,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:24,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 19:14:24,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:14:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:14:24,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82909705] [2020-10-14 19:14:24,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:14:24,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 19:14:24,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303678350] [2020-10-14 19:14:24,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:14:24,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:24,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:14:24,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:14:24,494 INFO L87 Difference]: Start difference. First operand 9715 states and 13300 transitions. Second operand 7 states. [2020-10-14 19:14:24,668 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:14:25,676 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:14:27,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:27,945 INFO L93 Difference]: Finished difference Result 24799 states and 34870 transitions. [2020-10-14 19:14:27,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:14:27,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-10-14 19:14:27,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:28,020 INFO L225 Difference]: With dead ends: 24799 [2020-10-14 19:14:28,020 INFO L226 Difference]: Without dead ends: 15090 [2020-10-14 19:14:28,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:14:28,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15090 states. [2020-10-14 19:14:28,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15090 to 14967. [2020-10-14 19:14:28,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14967 states. [2020-10-14 19:14:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14967 states to 14967 states and 20041 transitions. [2020-10-14 19:14:28,469 INFO L78 Accepts]: Start accepts. Automaton has 14967 states and 20041 transitions. Word has length 241 [2020-10-14 19:14:28,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:28,470 INFO L479 AbstractCegarLoop]: Abstraction has 14967 states and 20041 transitions. [2020-10-14 19:14:28,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:14:28,470 INFO L276 IsEmpty]: Start isEmpty. Operand 14967 states and 20041 transitions. [2020-10-14 19:14:28,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-14 19:14:28,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:28,524 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:28,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:14:28,525 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:28,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:28,525 INFO L82 PathProgramCache]: Analyzing trace with hash 671553842, now seen corresponding path program 1 times [2020-10-14 19:14:28,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:28,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564267451] [2020-10-14 19:14:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:28,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:28,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:30,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:30,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-14 19:14:30,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:14:30,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1983 [2020-10-14 19:14:30,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:30,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:14:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:14:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 19:14:30,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:30,781 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:30,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:30,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:30,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:30,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:30,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:30,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:14:30,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:30,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:30,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:30,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:30,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:14:30,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:30,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:30,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:30,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:31,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:31,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:14:31,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:14:31,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 19:14:31,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:31,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:14:31,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:31,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:14:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:31,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:31,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:31,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 19:14:31,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:31,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 19:14:31,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:31,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:31,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:31,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:31,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 19:14:31,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:31,227 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 19:14:31,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564267451] [2020-10-14 19:14:31,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:31,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:14:31,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890400837] [2020-10-14 19:14:31,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:14:31,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:31,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:14:31,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:14:31,229 INFO L87 Difference]: Start difference. First operand 14967 states and 20041 transitions. Second operand 8 states. [2020-10-14 19:14:31,391 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:14:32,178 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:14:32,450 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:14:35,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:35,119 INFO L93 Difference]: Finished difference Result 43634 states and 59158 transitions. [2020-10-14 19:14:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 19:14:35,119 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 252 [2020-10-14 19:14:35,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:35,214 INFO L225 Difference]: With dead ends: 43634 [2020-10-14 19:14:35,214 INFO L226 Difference]: Without dead ends: 28673 [2020-10-14 19:14:35,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:14:35,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28673 states. [2020-10-14 19:14:36,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28673 to 26602. [2020-10-14 19:14:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26602 states. [2020-10-14 19:14:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26602 states to 26602 states and 33178 transitions. [2020-10-14 19:14:36,077 INFO L78 Accepts]: Start accepts. Automaton has 26602 states and 33178 transitions. Word has length 252 [2020-10-14 19:14:36,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:36,078 INFO L479 AbstractCegarLoop]: Abstraction has 26602 states and 33178 transitions. [2020-10-14 19:14:36,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:14:36,079 INFO L276 IsEmpty]: Start isEmpty. Operand 26602 states and 33178 transitions. [2020-10-14 19:14:36,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-14 19:14:36,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:36,902 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:36,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 19:14:36,902 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:36,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:36,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1392065429, now seen corresponding path program 1 times [2020-10-14 19:14:36,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:36,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047883736] [2020-10-14 19:14:36,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:37,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:37,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:42,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:42,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-14 19:14:42,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:14:42,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-14 19:14:42,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:42,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:42,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 19:14:42,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:14:42,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 19:14:42,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:14:42,236 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:42,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:42,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:42,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:42,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:42,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:42,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:14:42,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:42,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:42,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:42,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:42,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:42,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:42,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:42,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:42,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:42,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:14:42,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:42,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:14:42,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:42,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:42,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:42,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:42,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:14:42,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:42,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:14:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:42,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:42,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:42,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:14:42,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:42,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 19:14:42,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:42,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:42,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:14:42,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:42,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:14:42,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:42,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 19:14:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:42,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:42,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:42,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 19:14:42,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:42,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 19:14:42,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:42,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:42,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:42,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:42,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 19:14:42,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:42,757 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 124 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 19:14:42,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047883736] [2020-10-14 19:14:42,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:42,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 19:14:42,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508282325] [2020-10-14 19:14:42,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 19:14:42,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:42,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 19:14:42,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:14:42,759 INFO L87 Difference]: Start difference. First operand 26602 states and 33178 transitions. Second operand 10 states. [2020-10-14 19:14:42,930 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:14:43,325 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 132 [2020-10-14 19:14:43,694 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:14:44,621 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 129 [2020-10-14 19:14:46,320 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:14:47,446 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2020-10-14 19:14:50,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:50,911 INFO L93 Difference]: Finished difference Result 63530 states and 84643 transitions. [2020-10-14 19:14:50,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 19:14:50,912 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 284 [2020-10-14 19:14:50,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:51,103 INFO L225 Difference]: With dead ends: 63530 [2020-10-14 19:14:51,103 INFO L226 Difference]: Without dead ends: 36934 [2020-10-14 19:14:51,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-10-14 19:14:51,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36934 states. [2020-10-14 19:14:52,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36934 to 35735. [2020-10-14 19:14:52,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35735 states. [2020-10-14 19:14:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35735 states to 35735 states and 43863 transitions. [2020-10-14 19:14:52,675 INFO L78 Accepts]: Start accepts. Automaton has 35735 states and 43863 transitions. Word has length 284 [2020-10-14 19:14:52,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:52,675 INFO L479 AbstractCegarLoop]: Abstraction has 35735 states and 43863 transitions. [2020-10-14 19:14:52,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 19:14:52,675 INFO L276 IsEmpty]: Start isEmpty. Operand 35735 states and 43863 transitions. [2020-10-14 19:14:52,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-14 19:14:52,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:52,747 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:52,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 19:14:52,747 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:52,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:52,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1107848005, now seen corresponding path program 1 times [2020-10-14 19:14:52,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:52,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652012832] [2020-10-14 19:14:52,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:52,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:53,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:57,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:57,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-14 19:14:57,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:14:57,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4280 [2020-10-14 19:14:57,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:57,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 19:14:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 19:14:57,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:57,285 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:57,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:57,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:57,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:57,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:57,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:14:57,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:57,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:57,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:57,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:57,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:57,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:57,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:57,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:14:57,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:57,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:14:57,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:57,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:57,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:57,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:57,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:57,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:57,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:14:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:57,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:57,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:57,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 19:14:57,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:57,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 19:14:57,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:57,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:57,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:57,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:57,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 19:14:57,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:57,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 19:14:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:57,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:57,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:57,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 19:14:57,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:57,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 19:14:57,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:57,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:57,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:57,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:57,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 19:14:57,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 19:14:57,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652012832] [2020-10-14 19:14:57,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:57,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:14:57,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595727477] [2020-10-14 19:14:57,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:14:57,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:57,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:14:57,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:14:57,797 INFO L87 Difference]: Start difference. First operand 35735 states and 43863 transitions. Second operand 7 states. [2020-10-14 19:14:58,264 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:14:59,181 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 19:15:02,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:02,015 INFO L93 Difference]: Finished difference Result 81023 states and 105345 transitions. [2020-10-14 19:15:02,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:15:02,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 287 [2020-10-14 19:15:02,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:02,232 INFO L225 Difference]: With dead ends: 81023 [2020-10-14 19:15:02,232 INFO L226 Difference]: Without dead ends: 46968 [2020-10-14 19:15:02,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:15:02,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46968 states. [2020-10-14 19:15:03,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46968 to 45994. [2020-10-14 19:15:03,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45994 states. [2020-10-14 19:15:03,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45994 states to 45994 states and 55752 transitions. [2020-10-14 19:15:03,497 INFO L78 Accepts]: Start accepts. Automaton has 45994 states and 55752 transitions. Word has length 287 [2020-10-14 19:15:03,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:03,497 INFO L479 AbstractCegarLoop]: Abstraction has 45994 states and 55752 transitions. [2020-10-14 19:15:03,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:15:03,497 INFO L276 IsEmpty]: Start isEmpty. Operand 45994 states and 55752 transitions. [2020-10-14 19:15:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-14 19:15:03,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:03,559 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:03,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 19:15:03,559 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:03,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:03,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1833676564, now seen corresponding path program 1 times [2020-10-14 19:15:03,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:03,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514888854] [2020-10-14 19:15:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:03,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:03,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:04,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:08,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:08,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-14 19:15:08,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:15:08,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 19:15:08,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:08,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:15:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:15:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 19:15:08,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:08,822 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:08,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:08,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:08,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:08,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:08,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:08,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:15:08,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:08,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:08,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:08,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:15:08,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:08,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:08,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:08,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:08,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:15:08,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:08,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 19:15:08,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:08,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:08,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:08,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:08,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:15:08,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:08,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:15:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:08,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:09,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:09,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:15:09,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:09,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 19:15:09,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:09,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:15:09,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:09,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 19:15:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:09,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:09,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:09,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:15:09,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:09,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 19:15:09,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:09,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:09,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:09,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:09,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:15:09,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:09,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 19:15:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:09,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:09,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:09,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 19:15:09,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:09,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 19:15:09,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:09,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 19:15:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:09,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 103 proven. 49 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 19:15:09,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514888854] [2020-10-14 19:15:09,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:09,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:15:09,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423198314] [2020-10-14 19:15:09,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:15:09,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:09,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:15:09,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:15:09,434 INFO L87 Difference]: Start difference. First operand 45994 states and 55752 transitions. Second operand 7 states. [2020-10-14 19:15:09,583 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:15:11,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:11,417 INFO L93 Difference]: Finished difference Result 84160 states and 101753 transitions. [2020-10-14 19:15:11,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 19:15:11,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2020-10-14 19:15:11,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:11,564 INFO L225 Difference]: With dead ends: 84160 [2020-10-14 19:15:11,565 INFO L226 Difference]: Without dead ends: 38801 [2020-10-14 19:15:11,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:15:11,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38801 states. [2020-10-14 19:15:12,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38801 to 37905. [2020-10-14 19:15:12,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37905 states. [2020-10-14 19:15:12,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37905 states to 37905 states and 45227 transitions. [2020-10-14 19:15:12,344 INFO L78 Accepts]: Start accepts. Automaton has 37905 states and 45227 transitions. Word has length 301 [2020-10-14 19:15:12,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:12,344 INFO L479 AbstractCegarLoop]: Abstraction has 37905 states and 45227 transitions. [2020-10-14 19:15:12,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:15:12,344 INFO L276 IsEmpty]: Start isEmpty. Operand 37905 states and 45227 transitions. [2020-10-14 19:15:12,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-14 19:15:12,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:12,394 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:12,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 19:15:12,394 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:12,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:12,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1296479940, now seen corresponding path program 1 times [2020-10-14 19:15:12,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:12,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968201459] [2020-10-14 19:15:12,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:12,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:13,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:15,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:15,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-14 19:15:15,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:15,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3305 [2020-10-14 19:15:15,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:15,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:15,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:15,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:15:15,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 19:15:15,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:15,906 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:15,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:15,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:15,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:15,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:15,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:15,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:15:15,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:15,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:15,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:15,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:15,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:15,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:15,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:16,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:16,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:16,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:15:16,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:16,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:15:16,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:16,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:15:16,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:16,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:15:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:16,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:16,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:16,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 19:15:16,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:16,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 19:15:16,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:16,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:16,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 19:15:16,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:16,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 19:15:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:16,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:16,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:16,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 19:15:16,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:16,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 19:15:16,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:16,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 19:15:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:16,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 123 proven. 44 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:15:16,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968201459] [2020-10-14 19:15:16,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:16,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:15:16,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735421624] [2020-10-14 19:15:16,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:15:16,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:16,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:15:16,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:15:16,413 INFO L87 Difference]: Start difference. First operand 37905 states and 45227 transitions. Second operand 7 states. [2020-10-14 19:15:16,566 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:15:17,331 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-14 19:15:19,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:19,234 INFO L93 Difference]: Finished difference Result 81940 states and 98436 transitions. [2020-10-14 19:15:19,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:15:19,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 316 [2020-10-14 19:15:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:19,354 INFO L225 Difference]: With dead ends: 81940 [2020-10-14 19:15:19,354 INFO L226 Difference]: Without dead ends: 45303 [2020-10-14 19:15:19,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:15:19,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45303 states. [2020-10-14 19:15:20,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45303 to 45220. [2020-10-14 19:15:20,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45220 states. [2020-10-14 19:15:20,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45220 states to 45220 states and 53649 transitions. [2020-10-14 19:15:20,200 INFO L78 Accepts]: Start accepts. Automaton has 45220 states and 53649 transitions. Word has length 316 [2020-10-14 19:15:20,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:20,200 INFO L479 AbstractCegarLoop]: Abstraction has 45220 states and 53649 transitions. [2020-10-14 19:15:20,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:15:20,200 INFO L276 IsEmpty]: Start isEmpty. Operand 45220 states and 53649 transitions. [2020-10-14 19:15:20,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-14 19:15:20,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:20,256 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:20,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 19:15:20,256 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:20,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:20,257 INFO L82 PathProgramCache]: Analyzing trace with hash 694000516, now seen corresponding path program 1 times [2020-10-14 19:15:20,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:20,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387341834] [2020-10-14 19:15:20,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:20,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:20,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:20,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:22,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:22,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:25,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:25,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-14 19:15:25,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:15:25,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 19:15:25,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:25,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 19:15:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:15:25,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 19:15:25,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:25,555 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:25,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:25,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:25,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:25,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:25,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:25,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:15:25,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:25,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:25,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:25,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:25,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:25,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:25,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:25,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:25,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:25,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:15:25,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:25,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:15:25,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:25,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:15:25,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:25,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:15:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:25,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:25,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:25,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:15:25,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:25,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 19:15:25,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:25,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:25,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:15:25,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:25,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:15:25,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:25,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 19:15:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:25,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:25,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:25,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:15:25,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:25,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 19:15:25,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:25,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:25,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:25,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:25,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 19:15:25,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:25,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 19:15:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:25,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:26,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:26,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 19:15:26,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:26,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 19:15:26,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:26,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:26,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:26,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:26,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 19:15:26,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 196 proven. 12 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-14 19:15:26,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387341834] [2020-10-14 19:15:26,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:26,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 19:15:26,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272880553] [2020-10-14 19:15:26,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 19:15:26,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:26,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 19:15:26,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:15:26,177 INFO L87 Difference]: Start difference. First operand 45220 states and 53649 transitions. Second operand 10 states. [2020-10-14 19:15:26,337 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:15:26,863 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 132 [2020-10-14 19:15:28,058 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:15:28,399 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 132 [2020-10-14 19:15:31,079 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 131 [2020-10-14 19:15:33,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:33,442 INFO L93 Difference]: Finished difference Result 96634 states and 120679 transitions. [2020-10-14 19:15:33,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 19:15:33,443 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 322 [2020-10-14 19:15:33,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:33,639 INFO L225 Difference]: With dead ends: 96634 [2020-10-14 19:15:33,639 INFO L226 Difference]: Without dead ends: 53100 [2020-10-14 19:15:33,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2020-10-14 19:15:33,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53100 states. [2020-10-14 19:15:34,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53100 to 51935. [2020-10-14 19:15:34,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51935 states. [2020-10-14 19:15:34,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51935 states to 51935 states and 62123 transitions. [2020-10-14 19:15:34,917 INFO L78 Accepts]: Start accepts. Automaton has 51935 states and 62123 transitions. Word has length 322 [2020-10-14 19:15:34,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:34,918 INFO L479 AbstractCegarLoop]: Abstraction has 51935 states and 62123 transitions. [2020-10-14 19:15:34,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 19:15:34,918 INFO L276 IsEmpty]: Start isEmpty. Operand 51935 states and 62123 transitions. [2020-10-14 19:15:35,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-14 19:15:35,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:35,001 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:35,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 19:15:35,002 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:35,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:35,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1846155222, now seen corresponding path program 1 times [2020-10-14 19:15:35,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:35,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511215557] [2020-10-14 19:15:35,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:35,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:35,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:35,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:39,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:40,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:40,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-14 19:15:40,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:15:40,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 19:15:40,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:40,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:40,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:15:40,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 19:15:40,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 19:15:40,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:40,330 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:40,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:40,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:40,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:40,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:40,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:40,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:15:40,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:40,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:40,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:40,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:40,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:40,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:40,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:15:40,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:40,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:15:40,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:40,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:40,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:40,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:40,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:40,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:40,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:15:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:40,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:40,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:40,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 19:15:40,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:40,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-14 19:15:40,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:40,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:40,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:40,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:40,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 19:15:40,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:40,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 19:15:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:40,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:40,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:40,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:40,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:15:40,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:40,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 19:15:40,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:40,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:40,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:40,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:40,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 19:15:40,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 19:15:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:40,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:40,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:40,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 19:15:40,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:40,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 19:15:40,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:40,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:40,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 19:15:40,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:41,187 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 204 proven. 37 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 19:15:41,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511215557] [2020-10-14 19:15:41,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:41,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:15:41,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299006030] [2020-10-14 19:15:41,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:15:41,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:41,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:15:41,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:15:41,190 INFO L87 Difference]: Start difference. First operand 51935 states and 62123 transitions. Second operand 9 states. [2020-10-14 19:15:41,648 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:15:43,046 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:15:43,886 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:15:46,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:46,152 INFO L93 Difference]: Finished difference Result 108210 states and 145574 transitions. [2020-10-14 19:15:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:15:46,152 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 325 [2020-10-14 19:15:46,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:46,412 INFO L225 Difference]: With dead ends: 108210 [2020-10-14 19:15:46,412 INFO L226 Difference]: Without dead ends: 57981 [2020-10-14 19:15:46,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-10-14 19:15:46,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57981 states. [2020-10-14 19:15:48,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57981 to 54619. [2020-10-14 19:15:48,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54619 states. [2020-10-14 19:15:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54619 states to 54619 states and 64427 transitions. [2020-10-14 19:15:48,513 INFO L78 Accepts]: Start accepts. Automaton has 54619 states and 64427 transitions. Word has length 325 [2020-10-14 19:15:48,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:48,514 INFO L479 AbstractCegarLoop]: Abstraction has 54619 states and 64427 transitions. [2020-10-14 19:15:48,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:15:48,514 INFO L276 IsEmpty]: Start isEmpty. Operand 54619 states and 64427 transitions. [2020-10-14 19:15:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-14 19:15:48,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:48,604 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:48,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 19:15:48,604 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:48,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:48,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1473006711, now seen corresponding path program 1 times [2020-10-14 19:15:48,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:48,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595547945] [2020-10-14 19:15:48,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:48,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:48,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:49,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:49,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:49,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:49,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:49,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:50,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:53,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:53,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-14 19:15:53,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 19:15:53,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 19:15:53,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:53,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:15:53,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 19:15:53,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:53,925 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:53,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:53,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:53,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:53,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:53,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:53,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:15:53,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:53,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:53,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:15:53,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:54,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:54,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:54,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:54,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:54,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 19:15:54,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:54,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 19:15:54,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:54,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:54,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:54,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 19:15:54,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:54,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 19:15:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:54,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:54,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:54,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:54,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 19:15:54,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:54,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 19:15:54,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:54,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:54,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:54,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:54,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 19:15:54,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:54,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 19:15:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:54,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:54,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:54,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:54,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:15:54,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:54,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:15:54,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:54,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:54,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-14 19:15:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 19:15:54,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:54,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 19:15:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:54,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:54,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:54,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 19:15:54,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:54,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 19:15:54,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:54,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:54,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:54,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 19:15:54,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:54,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:54,333 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 19:15:54,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595547945] [2020-10-14 19:15:54,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:54,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:15:54,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285551962] [2020-10-14 19:15:54,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:15:54,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:54,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:15:54,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:15:54,335 INFO L87 Difference]: Start difference. First operand 54619 states and 64427 transitions. Second operand 6 states. [2020-10-14 19:15:54,479 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:15:56,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:56,181 INFO L93 Difference]: Finished difference Result 105549 states and 123970 transitions. [2020-10-14 19:15:56,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:15:56,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 336 [2020-10-14 19:15:56,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:56,296 INFO L225 Difference]: With dead ends: 105549 [2020-10-14 19:15:56,297 INFO L226 Difference]: Without dead ends: 54667 [2020-10-14 19:15:56,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:15:56,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54667 states. [2020-10-14 19:15:57,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54667 to 54613. [2020-10-14 19:15:57,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54613 states. [2020-10-14 19:15:57,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54613 states to 54613 states and 64400 transitions. [2020-10-14 19:15:57,463 INFO L78 Accepts]: Start accepts. Automaton has 54613 states and 64400 transitions. Word has length 336 [2020-10-14 19:15:57,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:57,464 INFO L479 AbstractCegarLoop]: Abstraction has 54613 states and 64400 transitions. [2020-10-14 19:15:57,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:15:57,464 INFO L276 IsEmpty]: Start isEmpty. Operand 54613 states and 64400 transitions. [2020-10-14 19:15:57,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-14 19:15:57,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:57,563 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:57,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 19:15:57,564 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:57,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:57,564 INFO L82 PathProgramCache]: Analyzing trace with hash -861482081, now seen corresponding path program 1 times [2020-10-14 19:15:57,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:57,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376699119] [2020-10-14 19:15:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:57,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:57,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:01,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:02,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:02,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-14 19:16:02,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:16:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 19:16:02,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:02,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 19:16:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:16:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 19:16:02,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:02,920 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:02,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:02,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:02,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:02,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:02,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:02,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:16:02,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:02,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:16:02,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:03,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:03,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:03,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:03,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:16:03,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:03,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:16:03,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:03,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:03,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:03,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:16:03,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:03,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:16:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:03,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:03,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:03,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:16:03,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:03,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 19:16:03,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:03,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:03,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:03,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:03,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:16:03,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:03,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 19:16:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:03,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:03,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:03,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 19:16:03,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:03,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 19:16:03,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:03,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:03,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:16:03,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:03,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 19:16:03,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:03,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 19:16:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:03,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:03,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:03,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 19:16:03,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:03,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 19:16:03,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:03,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:03,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:03,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:03,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 19:16:03,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 192 proven. 68 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 19:16:03,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376699119] [2020-10-14 19:16:03,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:03,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 19:16:03,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784376347] [2020-10-14 19:16:03,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 19:16:03,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:03,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 19:16:03,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:16:03,700 INFO L87 Difference]: Start difference. First operand 54613 states and 64400 transitions. Second operand 11 states. [2020-10-14 19:16:04,657 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:16:05,148 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:16:06,552 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2020-10-14 19:16:08,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:08,799 INFO L93 Difference]: Finished difference Result 88208 states and 107547 transitions. [2020-10-14 19:16:08,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:16:08,800 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 348 [2020-10-14 19:16:08,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:08,888 INFO L225 Difference]: With dead ends: 88208 [2020-10-14 19:16:08,888 INFO L226 Difference]: Without dead ends: 37332 [2020-10-14 19:16:08,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-10-14 19:16:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37332 states. [2020-10-14 19:16:09,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37332 to 36486. [2020-10-14 19:16:09,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36486 states. [2020-10-14 19:16:09,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36486 states to 36486 states and 42116 transitions. [2020-10-14 19:16:09,760 INFO L78 Accepts]: Start accepts. Automaton has 36486 states and 42116 transitions. Word has length 348 [2020-10-14 19:16:09,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:09,760 INFO L479 AbstractCegarLoop]: Abstraction has 36486 states and 42116 transitions. [2020-10-14 19:16:09,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 19:16:09,760 INFO L276 IsEmpty]: Start isEmpty. Operand 36486 states and 42116 transitions. [2020-10-14 19:16:09,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-14 19:16:09,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:09,821 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:16:09,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 19:16:09,822 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:09,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:09,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1523390176, now seen corresponding path program 1 times [2020-10-14 19:16:09,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:09,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468058024] [2020-10-14 19:16:09,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:10,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:10,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:10,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:12,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:14,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:14,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-14 19:16:14,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:16:14,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 19:16:14,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:14,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:14,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:16:14,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:16:14,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 19:16:14,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:15,190 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:15,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:15,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:15,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:15,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:15,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:15,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:16:15,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:15,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:15,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:15,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:16:15,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:15,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:15,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:15,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:15,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 19:16:15,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:15,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 19:16:15,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:15,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:15,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:15,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:15,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 19:16:15,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:15,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 19:16:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:15,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:15,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:15,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:16:15,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:15,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 19:16:15,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:15,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 19:16:15,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:15,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 19:16:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:15,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:15,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:15,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 19:16:15,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:15,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 19:16:15,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:15,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 19:16:15,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:16,701 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 225 proven. 4 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-14 19:16:16,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468058024] [2020-10-14 19:16:16,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:16,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:16:16,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986732013] [2020-10-14 19:16:16,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:16:16,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:16,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:16:16,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:16:16,704 INFO L87 Difference]: Start difference. First operand 36486 states and 42116 transitions. Second operand 9 states. [2020-10-14 19:16:16,867 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:16:17,763 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 19:16:19,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:19,610 INFO L93 Difference]: Finished difference Result 69305 states and 79536 transitions. [2020-10-14 19:16:19,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:16:19,610 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 357 [2020-10-14 19:16:19,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:19,671 INFO L225 Difference]: With dead ends: 69305 [2020-10-14 19:16:19,671 INFO L226 Difference]: Without dead ends: 34525 [2020-10-14 19:16:19,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-14 19:16:19,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34525 states. [2020-10-14 19:16:20,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34525 to 34019. [2020-10-14 19:16:20,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34019 states. [2020-10-14 19:16:20,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34019 states to 34019 states and 37595 transitions. [2020-10-14 19:16:20,161 INFO L78 Accepts]: Start accepts. Automaton has 34019 states and 37595 transitions. Word has length 357 [2020-10-14 19:16:20,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:20,162 INFO L479 AbstractCegarLoop]: Abstraction has 34019 states and 37595 transitions. [2020-10-14 19:16:20,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:16:20,162 INFO L276 IsEmpty]: Start isEmpty. Operand 34019 states and 37595 transitions. [2020-10-14 19:16:20,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-14 19:16:20,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:20,196 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:20,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 19:16:20,196 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:20,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:20,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1346521425, now seen corresponding path program 1 times [2020-10-14 19:16:20,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:20,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812870368] [2020-10-14 19:16:20,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:20,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:20,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:20,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:20,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:25,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:25,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 437 [2020-10-14 19:16:25,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:16:25,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 19:16:25,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:25,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:16:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-14 19:16:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 19:16:25,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:25,504 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:25,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:25,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:25,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:25,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:25,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:25,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:16:25,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:25,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:25,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:25,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:25,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:25,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:25,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:25,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:25,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:25,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:16:25,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:25,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:16:25,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:25,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:25,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:25,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:16:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:25,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:25,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:25,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 19:16:25,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:25,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:16:25,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:25,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:25,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:25,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:25,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:25,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:25,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 19:16:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:25,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:25,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:25,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:16:25,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:25,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 19:16:25,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:25,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 19:16:25,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:25,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-14 19:16:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:25,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:25,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:25,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:16:25,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:25,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 19:16:25,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:25,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:25,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:25,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:25,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 19:16:25,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:25,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 19:16:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:25,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:25,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:25,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:16:25,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:25,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 19:16:25,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:25,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:25,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:25,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:25,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 19:16:25,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:26,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-14 19:16:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:26,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:26,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:26,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 19:16:26,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:26,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 19:16:26,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:26,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:26,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:26,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 19:16:26,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:26,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 378 proven. 97 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-14 19:16:26,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812870368] [2020-10-14 19:16:26,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:26,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:16:26,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993478904] [2020-10-14 19:16:26,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:16:26,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:26,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:16:26,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:16:26,370 INFO L87 Difference]: Start difference. First operand 34019 states and 37595 transitions. Second operand 8 states. [2020-10-14 19:16:26,734 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:16:27,701 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:16:30,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:30,054 INFO L93 Difference]: Finished difference Result 74876 states and 85004 transitions. [2020-10-14 19:16:30,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 19:16:30,055 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 417 [2020-10-14 19:16:30,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:30,139 INFO L225 Difference]: With dead ends: 74876 [2020-10-14 19:16:30,139 INFO L226 Difference]: Without dead ends: 42543 [2020-10-14 19:16:30,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:16:30,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42543 states. [2020-10-14 19:16:30,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42543 to 40743. [2020-10-14 19:16:30,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40743 states. [2020-10-14 19:16:30,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40743 states to 40743 states and 44742 transitions. [2020-10-14 19:16:30,776 INFO L78 Accepts]: Start accepts. Automaton has 40743 states and 44742 transitions. Word has length 417 [2020-10-14 19:16:30,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:30,776 INFO L479 AbstractCegarLoop]: Abstraction has 40743 states and 44742 transitions. [2020-10-14 19:16:30,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:16:30,776 INFO L276 IsEmpty]: Start isEmpty. Operand 40743 states and 44742 transitions. [2020-10-14 19:16:30,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-14 19:16:30,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:30,812 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:30,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 19:16:30,812 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:30,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:30,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1611324755, now seen corresponding path program 1 times [2020-10-14 19:16:30,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:30,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116707927] [2020-10-14 19:16:30,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:30,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:31,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:31,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:31,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:35,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:35,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:35,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-14 19:16:35,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:16:35,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-14 19:16:35,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:35,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:16:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:16:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 19:16:35,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:36,245 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:36,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:36,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:36,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:36,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:36,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:36,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:16:36,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:36,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:16:36,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:36,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:36,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:36,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:36,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:16:36,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:36,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 19:16:36,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:36,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:16:36,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:36,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:16:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:36,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:36,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:36,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 19:16:36,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:36,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-14 19:16:36,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:36,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:36,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:36,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:36,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 19:16:36,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:16:36,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 19:16:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:36,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:37,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:37,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:16:37,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:37,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 19:16:37,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:37,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 19:16:37,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:37,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-14 19:16:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:37,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:37,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:37,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 19:16:37,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:37,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 19:16:37,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:37,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:37,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:37,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 19:16:37,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:37,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 223 proven. 118 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 19:16:37,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116707927] [2020-10-14 19:16:37,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:37,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:16:37,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439616711] [2020-10-14 19:16:37,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:16:37,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:37,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:16:37,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:16:37,512 INFO L87 Difference]: Start difference. First operand 40743 states and 44742 transitions. Second operand 9 states. [2020-10-14 19:16:37,677 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:16:38,595 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 19:16:40,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:40,852 INFO L93 Difference]: Finished difference Result 84575 states and 92835 transitions. [2020-10-14 19:16:40,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 19:16:40,852 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 417 [2020-10-14 19:16:40,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:40,926 INFO L225 Difference]: With dead ends: 84575 [2020-10-14 19:16:40,926 INFO L226 Difference]: Without dead ends: 44676 [2020-10-14 19:16:40,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:16:40,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44676 states. [2020-10-14 19:16:41,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44676 to 44523. [2020-10-14 19:16:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44523 states. [2020-10-14 19:16:41,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44523 states to 44523 states and 48758 transitions. [2020-10-14 19:16:41,515 INFO L78 Accepts]: Start accepts. Automaton has 44523 states and 48758 transitions. Word has length 417 [2020-10-14 19:16:41,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:41,515 INFO L479 AbstractCegarLoop]: Abstraction has 44523 states and 48758 transitions. [2020-10-14 19:16:41,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:16:41,516 INFO L276 IsEmpty]: Start isEmpty. Operand 44523 states and 48758 transitions. [2020-10-14 19:16:41,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-14 19:16:41,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:41,557 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:16:41,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 19:16:41,558 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:41,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:41,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1027127535, now seen corresponding path program 1 times [2020-10-14 19:16:41,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:41,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402757672] [2020-10-14 19:16:41,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:41,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:41,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:42,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:42,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:42,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:43,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking...