/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/Problem15_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:03:01,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:03:01,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:03:01,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:03:01,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:03:01,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:03:01,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:03:01,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:03:01,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:03:01,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:03:01,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:03:01,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:03:01,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:03:01,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:03:01,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:03:01,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:03:01,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:03:01,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:03:01,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:03:01,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:03:01,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:03:01,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:03:01,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:03:01,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:03:01,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:03:01,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:03:01,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:03:01,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:03:01,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:03:01,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:03:01,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:03:01,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:03:01,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:03:01,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:03:01,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:03:01,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:03:01,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:03:01,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:03:01,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:03:01,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:03:01,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:03:01,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 22:03:01,356 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:03:01,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:03:01,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:03:01,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:03:01,358 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:03:01,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:03:01,358 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:03:01,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:03:01,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:03:01,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:03:01,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:03:01,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:03:01,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:03:01,359 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:03:01,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:03:01,360 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:03:01,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:03:01,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:03:01,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:03:01,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:03:01,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:03:01,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:03:01,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:03:01,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:03:01,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:03:01,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:03:01,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:03:01,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:03:01,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:03:01,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:03:01,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:03:01,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:03:01,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:03:01,691 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:03:01,691 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:03:01,692 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label42.c [2020-10-14 22:03:01,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0438171f/5a404d1a7e3d4b28bf03407629edd442/FLAG984642639 [2020-10-14 22:03:02,374 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:03:02,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label42.c [2020-10-14 22:03:02,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0438171f/5a404d1a7e3d4b28bf03407629edd442/FLAG984642639 [2020-10-14 22:03:02,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0438171f/5a404d1a7e3d4b28bf03407629edd442 [2020-10-14 22:03:02,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:03:02,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:03:02,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:03:02,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:03:02,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:03:02,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:02" (1/1) ... [2020-10-14 22:03:02,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603d5fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:02, skipping insertion in model container [2020-10-14 22:03:02,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:02" (1/1) ... [2020-10-14 22:03:02,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:03:02,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:03:03,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:03:03,690 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:03:04,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:03:04,145 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:03:04,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04 WrapperNode [2020-10-14 22:03:04,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:03:04,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:03:04,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:03:04,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:03:04,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (1/1) ... [2020-10-14 22:03:04,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (1/1) ... [2020-10-14 22:03:04,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (1/1) ... [2020-10-14 22:03:04,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (1/1) ... [2020-10-14 22:03:04,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (1/1) ... [2020-10-14 22:03:04,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (1/1) ... [2020-10-14 22:03:04,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (1/1) ... [2020-10-14 22:03:04,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:03:04,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:03:04,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:03:04,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:03:04,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:03:04,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:03:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:03:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:03:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:03:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:03:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:03:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:03:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:03:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:03:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:03:04,455 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:03:04,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:03:04,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:03:11,183 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:03:11,184 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:03:11,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:11 BoogieIcfgContainer [2020-10-14 22:03:11,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:03:11,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:03:11,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:03:11,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:03:11,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:03:02" (1/3) ... [2020-10-14 22:03:11,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db4acca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:03:11, skipping insertion in model container [2020-10-14 22:03:11,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:04" (2/3) ... [2020-10-14 22:03:11,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db4acca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:03:11, skipping insertion in model container [2020-10-14 22:03:11,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:11" (3/3) ... [2020-10-14 22:03:11,202 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label42.c [2020-10-14 22:03:11,214 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:03:11,226 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:03:11,242 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:03:11,274 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:03:11,274 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:03:11,274 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:03:11,274 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:03:11,275 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:03:11,275 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:03:11,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:03:11,275 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:03:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 22:03:11,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 22:03:11,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:11,316 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] [2020-10-14 22:03:11,317 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:11,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:11,327 INFO L82 PathProgramCache]: Analyzing trace with hash 2044127672, now seen corresponding path program 1 times [2020-10-14 22:03:11,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:11,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600953448] [2020-10-14 22:03:11,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:11,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:11,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:11,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 22:03:11,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:12,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-14 22:03:12,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:12,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:12,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:03:12,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:03:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 22:03:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:03:12,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:12,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:12,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:12,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:12,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:12,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:03:12,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:12,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:03:12,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:12,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:03:12,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600953448] [2020-10-14 22:03:12,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:03:12,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 22:03:12,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311327822] [2020-10-14 22:03:12,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:03:12,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:12,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:03:12,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:03:12,225 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 5 states. [2020-10-14 22:03:23,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:23,931 INFO L93 Difference]: Finished difference Result 1584 states and 2883 transitions. [2020-10-14 22:03:23,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:03:23,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-14 22:03:23,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:23,962 INFO L225 Difference]: With dead ends: 1584 [2020-10-14 22:03:23,962 INFO L226 Difference]: Without dead ends: 1049 [2020-10-14 22:03:23,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:03:23,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2020-10-14 22:03:24,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1024. [2020-10-14 22:03:24,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-10-14 22:03:24,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1566 transitions. [2020-10-14 22:03:24,090 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1566 transitions. Word has length 52 [2020-10-14 22:03:24,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:24,091 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1566 transitions. [2020-10-14 22:03:24,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:03:24,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1566 transitions. [2020-10-14 22:03:24,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 22:03:24,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:24,099 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:03:24,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:03:24,100 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:24,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:24,100 INFO L82 PathProgramCache]: Analyzing trace with hash 147073843, now seen corresponding path program 1 times [2020-10-14 22:03:24,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:24,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028384512] [2020-10-14 22:03:24,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:24,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:24,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:25,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:26,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:26,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 22:03:26,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:03:26,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2058 [2020-10-14 22:03:26,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:26,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:03:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:03:26,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 22:03:26,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:03:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:26,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:26,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:26,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:26,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:26,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:03:26,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:26,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:03:26,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:26,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:26,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:26,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:26,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 22:03:26,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:26,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 22:03:26,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:26,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 22:03:26,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:26,606 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:03:26,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028384512] [2020-10-14 22:03:26,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:03:26,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:03:26,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955840405] [2020-10-14 22:03:26,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:03:26,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:26,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:03:26,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:03:26,611 INFO L87 Difference]: Start difference. First operand 1024 states and 1566 transitions. Second operand 7 states. [2020-10-14 22:03:34,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:34,642 INFO L93 Difference]: Finished difference Result 2703 states and 4200 transitions. [2020-10-14 22:03:34,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:03:34,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-14 22:03:34,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:34,655 INFO L225 Difference]: With dead ends: 2703 [2020-10-14 22:03:34,655 INFO L226 Difference]: Without dead ends: 1685 [2020-10-14 22:03:34,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:03:34,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-10-14 22:03:34,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1648. [2020-10-14 22:03:34,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1648 states. [2020-10-14 22:03:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2196 transitions. [2020-10-14 22:03:34,728 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2196 transitions. Word has length 124 [2020-10-14 22:03:34,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:34,728 INFO L479 AbstractCegarLoop]: Abstraction has 1648 states and 2196 transitions. [2020-10-14 22:03:34,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:03:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2196 transitions. [2020-10-14 22:03:34,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 22:03:34,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:34,735 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, 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] [2020-10-14 22:03:34,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:03:34,736 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:34,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:34,736 INFO L82 PathProgramCache]: Analyzing trace with hash -855279069, now seen corresponding path program 1 times [2020-10-14 22:03:34,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:34,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722781873] [2020-10-14 22:03:34,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:34,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:34,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:36,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:36,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 22:03:36,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:03:36,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1588 [2020-10-14 22:03:36,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:36,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:03:36,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:03:36,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 22:03:36,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:36,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:36,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:36,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:36,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:36,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:36,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:03:36,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:36,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:36,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:03:36,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:36,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:36,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:36,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:36,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 22:03:36,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:36,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 22:03:36,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:36,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:36,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:36,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:36,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:03:36,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:36,945 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:03:36,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722781873] [2020-10-14 22:03:36,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:03:36,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:03:36,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616047235] [2020-10-14 22:03:36,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:03:36,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:36,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:03:36,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:03:36,950 INFO L87 Difference]: Start difference. First operand 1648 states and 2196 transitions. Second operand 7 states. [2020-10-14 22:03:44,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:44,237 INFO L93 Difference]: Finished difference Result 3020 states and 4097 transitions. [2020-10-14 22:03:44,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:03:44,245 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-14 22:03:44,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:44,256 INFO L225 Difference]: With dead ends: 3020 [2020-10-14 22:03:44,256 INFO L226 Difference]: Without dead ends: 1685 [2020-10-14 22:03:44,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:03:44,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-10-14 22:03:44,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1654. [2020-10-14 22:03:44,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1654 states. [2020-10-14 22:03:44,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2180 transitions. [2020-10-14 22:03:44,322 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2180 transitions. Word has length 132 [2020-10-14 22:03:44,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:44,325 INFO L479 AbstractCegarLoop]: Abstraction has 1654 states and 2180 transitions. [2020-10-14 22:03:44,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:03:44,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2180 transitions. [2020-10-14 22:03:44,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-14 22:03:44,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:44,345 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:03:44,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:03:44,346 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:44,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:44,346 INFO L82 PathProgramCache]: Analyzing trace with hash 839442501, now seen corresponding path program 1 times [2020-10-14 22:03:44,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:44,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904399654] [2020-10-14 22:03:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:44,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:44,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:45,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:45,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:47,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:47,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-14 22:03:47,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:03:47,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3424 [2020-10-14 22:03:47,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:47,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:47,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:03:47,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:03:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-14 22:03:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:47,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:47,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:47,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:47,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:47,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:47,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:03:47,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:47,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:03:47,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:47,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:47,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:48,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:48,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:48,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:03:48,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:03:48,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 22:03:48,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:48,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:48,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:48,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:48,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:03:48,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:48,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:03:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:48,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:48,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:48,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 22:03:48,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:48,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 22:03:48,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:48,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:03:48,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:03:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:03:48,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904399654] [2020-10-14 22:03:48,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:48,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:03:48,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866455244] [2020-10-14 22:03:48,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:03:48,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:48,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:03:48,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:03:48,548 INFO L87 Difference]: Start difference. First operand 1654 states and 2180 transitions. Second operand 7 states. [2020-10-14 22:03:59,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:59,158 INFO L93 Difference]: Finished difference Result 4315 states and 5914 transitions. [2020-10-14 22:03:59,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:03:59,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-10-14 22:03:59,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:59,177 INFO L225 Difference]: With dead ends: 4315 [2020-10-14 22:03:59,178 INFO L226 Difference]: Without dead ends: 2974 [2020-10-14 22:03:59,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:03:59,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-10-14 22:03:59,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2932. [2020-10-14 22:03:59,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2932 states. [2020-10-14 22:03:59,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 3610 transitions. [2020-10-14 22:03:59,261 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 3610 transitions. Word has length 227 [2020-10-14 22:03:59,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:59,262 INFO L479 AbstractCegarLoop]: Abstraction has 2932 states and 3610 transitions. [2020-10-14 22:03:59,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:03:59,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 3610 transitions. [2020-10-14 22:03:59,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-14 22:03:59,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:59,268 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:03:59,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:03:59,269 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:59,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:59,270 INFO L82 PathProgramCache]: Analyzing trace with hash 322455635, now seen corresponding path program 1 times [2020-10-14 22:03:59,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:59,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044260199] [2020-10-14 22:03:59,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:59,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:59,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:01,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:01,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-14 22:04:01,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:04:01,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1638 [2020-10-14 22:04:01,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:01,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:01,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:04:01,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:04:01,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 342 [2020-10-14 22:04:01,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:01,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:01,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:01,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:01,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:01,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:01,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:04:01,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:01,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:01,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:04:01,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:01,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:01,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:01,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:01,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:04:01,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:01,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-14 22:04:01,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:01,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:01,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:01,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:01,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-14 22:04:01,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:04:02,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044260199] [2020-10-14 22:04:02,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:02,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:04:02,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575453556] [2020-10-14 22:04:02,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:04:02,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:02,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:04:02,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:04:02,292 INFO L87 Difference]: Start difference. First operand 2932 states and 3610 transitions. Second operand 6 states. [2020-10-14 22:04:08,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:08,677 INFO L93 Difference]: Finished difference Result 5893 states and 7731 transitions. [2020-10-14 22:04:08,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:04:08,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 338 [2020-10-14 22:04:08,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:08,706 INFO L225 Difference]: With dead ends: 5893 [2020-10-14 22:04:08,706 INFO L226 Difference]: Without dead ends: 4521 [2020-10-14 22:04:08,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:04:08,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2020-10-14 22:04:08,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4509. [2020-10-14 22:04:08,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4509 states. [2020-10-14 22:04:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4509 states to 4509 states and 5436 transitions. [2020-10-14 22:04:08,845 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 5436 transitions. Word has length 338 [2020-10-14 22:04:08,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:08,847 INFO L479 AbstractCegarLoop]: Abstraction has 4509 states and 5436 transitions. [2020-10-14 22:04:08,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:04:08,847 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 5436 transitions. [2020-10-14 22:04:08,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-14 22:04:08,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:08,854 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:08,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:04:08,855 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:08,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:08,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1920336010, now seen corresponding path program 1 times [2020-10-14 22:04:08,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:08,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915756721] [2020-10-14 22:04:08,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:08,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:09,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:10,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:10,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:12,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:13,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:13,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-14 22:04:13,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:04:13,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 22:04:13,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:13,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:13,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 22:04:13,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:04:13,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 353 [2020-10-14 22:04:13,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:14,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:14,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:14,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:14,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:14,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:14,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:04:14,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:14,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:14,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:14,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:14,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:04:14,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:14,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:14,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:14,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:14,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:04:14,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:14,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 22:04:14,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:14,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:14,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:14,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:14,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 22:04:14,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:14,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:04:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:14,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:14,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:15,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:15,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:04:15,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:04:15,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 892 [2020-10-14 22:04:15,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:15,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 22:04:15,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 41 proven. 140 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:04:15,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915756721] [2020-10-14 22:04:15,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:15,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:04:15,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862500771] [2020-10-14 22:04:15,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:04:15,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:15,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:04:15,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:04:15,945 INFO L87 Difference]: Start difference. First operand 4509 states and 5436 transitions. Second operand 8 states. [2020-10-14 22:04:31,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:31,541 INFO L93 Difference]: Finished difference Result 10284 states and 13183 transitions. [2020-10-14 22:04:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 22:04:31,542 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 347 [2020-10-14 22:04:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:31,587 INFO L225 Difference]: With dead ends: 10284 [2020-10-14 22:04:31,587 INFO L226 Difference]: Without dead ends: 7961 [2020-10-14 22:04:31,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-14 22:04:31,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7961 states. [2020-10-14 22:04:31,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7961 to 7017. [2020-10-14 22:04:31,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7017 states. [2020-10-14 22:04:31,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7017 states to 7017 states and 8635 transitions. [2020-10-14 22:04:31,796 INFO L78 Accepts]: Start accepts. Automaton has 7017 states and 8635 transitions. Word has length 347 [2020-10-14 22:04:31,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:31,797 INFO L479 AbstractCegarLoop]: Abstraction has 7017 states and 8635 transitions. [2020-10-14 22:04:31,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:04:31,797 INFO L276 IsEmpty]: Start isEmpty. Operand 7017 states and 8635 transitions. [2020-10-14 22:04:31,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-14 22:04:31,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:31,810 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:31,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:04:31,811 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:31,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:31,811 INFO L82 PathProgramCache]: Analyzing trace with hash 156149559, now seen corresponding path program 1 times [2020-10-14 22:04:31,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:31,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306515493] [2020-10-14 22:04:31,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:32,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:32,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:34,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:34,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 446 [2020-10-14 22:04:34,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:04:34,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2154 [2020-10-14 22:04:34,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:34,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:34,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:34,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 22:04:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 22:04:34,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:34,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:34,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:34,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:34,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:34,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:34,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 22:04:34,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:34,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:34,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:34,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:34,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:34,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:34,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:34,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:34,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:34,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:04:34,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:34,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-14 22:04:34,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:34,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:34,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:34,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:34,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 22:04:34,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:04:35,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:04:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:35,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:35,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:35,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:04:35,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:35,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 22:04:35,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:35,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:04:35,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:35,573 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:04:35,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306515493] [2020-10-14 22:04:35,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:35,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:04:35,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296125003] [2020-10-14 22:04:35,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:04:35,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:35,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:04:35,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:04:35,579 INFO L87 Difference]: Start difference. First operand 7017 states and 8635 transitions. Second operand 7 states. [2020-10-14 22:04:48,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:48,297 INFO L93 Difference]: Finished difference Result 16305 states and 20977 transitions. [2020-10-14 22:04:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:04:48,304 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 434 [2020-10-14 22:04:48,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:48,350 INFO L225 Difference]: With dead ends: 16305 [2020-10-14 22:04:48,350 INFO L226 Difference]: Without dead ends: 9910 [2020-10-14 22:04:48,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:04:48,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9910 states. [2020-10-14 22:04:48,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9910 to 9234. [2020-10-14 22:04:48,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9234 states. [2020-10-14 22:04:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9234 states to 9234 states and 11375 transitions. [2020-10-14 22:04:48,570 INFO L78 Accepts]: Start accepts. Automaton has 9234 states and 11375 transitions. Word has length 434 [2020-10-14 22:04:48,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:48,571 INFO L479 AbstractCegarLoop]: Abstraction has 9234 states and 11375 transitions. [2020-10-14 22:04:48,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:04:48,571 INFO L276 IsEmpty]: Start isEmpty. Operand 9234 states and 11375 transitions. [2020-10-14 22:04:48,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-14 22:04:48,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:48,583 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:04:48,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:04:48,584 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:48,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:48,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1943566938, now seen corresponding path program 1 times [2020-10-14 22:04:48,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:48,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972049727] [2020-10-14 22:04:48,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:48,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:48,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:49,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:49,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:51,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:52,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:53,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:53,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-10-14 22:04:53,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:04:53,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 22:04:53,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:53,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:53,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:04:53,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 22:04:53,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-14 22:04:53,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:53,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:53,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:53,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:53,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:53,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:53,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:04:53,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:53,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:53,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:53,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:53,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:53,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:53,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:53,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:53,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:04:53,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:53,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 22:04:53,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:53,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:53,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:53,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:53,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:04:53,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:53,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:04:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:54,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:54,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:54,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:54,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:04:54,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:04:54,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-14 22:04:54,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:54,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:04:54,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:54,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 22:04:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:55,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:55,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:55,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:04:55,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:55,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 22:04:55,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:55,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:55,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:55,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:04:55,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:55,247 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 319 proven. 4 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-14 22:04:55,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972049727] [2020-10-14 22:04:55,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:55,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:04:55,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221007689] [2020-10-14 22:04:55,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:04:55,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:55,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:04:55,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:04:55,250 INFO L87 Difference]: Start difference. First operand 9234 states and 11375 transitions. Second operand 7 states. [2020-10-14 22:05:07,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:07,683 INFO L93 Difference]: Finished difference Result 20089 states and 25200 transitions. [2020-10-14 22:05:07,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:05:07,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 443 [2020-10-14 22:05:07,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:07,734 INFO L225 Difference]: With dead ends: 20089 [2020-10-14 22:05:07,735 INFO L226 Difference]: Without dead ends: 11163 [2020-10-14 22:05:07,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:05:07,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11163 states. [2020-10-14 22:05:07,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11163 to 10836. [2020-10-14 22:05:07,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10836 states. [2020-10-14 22:05:07,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10836 states to 10836 states and 13209 transitions. [2020-10-14 22:05:07,995 INFO L78 Accepts]: Start accepts. Automaton has 10836 states and 13209 transitions. Word has length 443 [2020-10-14 22:05:07,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:07,995 INFO L479 AbstractCegarLoop]: Abstraction has 10836 states and 13209 transitions. [2020-10-14 22:05:07,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:05:07,995 INFO L276 IsEmpty]: Start isEmpty. Operand 10836 states and 13209 transitions. [2020-10-14 22:05:08,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-10-14 22:05:08,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:08,013 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2020-10-14 22:05:08,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:05:08,014 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:08,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:08,014 INFO L82 PathProgramCache]: Analyzing trace with hash 901020335, now seen corresponding path program 1 times [2020-10-14 22:05:08,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:08,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945714934] [2020-10-14 22:05:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:08,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:08,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:10,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:11,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:13,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:13,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 529 [2020-10-14 22:05:13,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:05:13,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 22:05:13,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:13,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:13,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:13,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:05:13,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 22:05:13,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:13,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:13,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:13,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:13,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:13,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:13,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:05:13,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:13,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:13,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:13,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:13,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:13,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:13,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:13,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:13,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:05:13,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:13,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 22:05:13,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:13,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:05:13,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:13,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:05:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:13,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:13,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:13,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:05:13,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:13,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 22:05:13,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:13,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:13,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:13,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:13,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:05:13,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:14,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 22:05:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:14,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:14,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:14,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 22:05:14,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:14,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 22:05:14,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:14,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 22:05:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:14,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:14,492 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 247 proven. 77 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-14 22:05:14,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945714934] [2020-10-14 22:05:14,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:14,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:05:14,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800320739] [2020-10-14 22:05:14,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:05:14,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:14,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:05:14,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:05:14,495 INFO L87 Difference]: Start difference. First operand 10836 states and 13209 transitions. Second operand 8 states. [2020-10-14 22:05:27,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:27,017 INFO L93 Difference]: Finished difference Result 22654 states and 27728 transitions. [2020-10-14 22:05:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:05:27,027 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 515 [2020-10-14 22:05:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:27,077 INFO L225 Difference]: With dead ends: 22654 [2020-10-14 22:05:27,078 INFO L226 Difference]: Without dead ends: 12440 [2020-10-14 22:05:27,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:05:27,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12440 states. [2020-10-14 22:05:27,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12440 to 12413. [2020-10-14 22:05:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12413 states. [2020-10-14 22:05:27,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12413 states to 12413 states and 14962 transitions. [2020-10-14 22:05:27,378 INFO L78 Accepts]: Start accepts. Automaton has 12413 states and 14962 transitions. Word has length 515 [2020-10-14 22:05:27,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:27,379 INFO L479 AbstractCegarLoop]: Abstraction has 12413 states and 14962 transitions. [2020-10-14 22:05:27,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:05:27,379 INFO L276 IsEmpty]: Start isEmpty. Operand 12413 states and 14962 transitions. [2020-10-14 22:05:27,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2020-10-14 22:05:27,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:27,402 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:05:27,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:05:27,403 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:27,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:27,404 INFO L82 PathProgramCache]: Analyzing trace with hash 750986087, now seen corresponding path program 1 times [2020-10-14 22:05:27,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:27,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078812226] [2020-10-14 22:05:27,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:27,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:28,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:29,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:30,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:30,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 541 [2020-10-14 22:05:30,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:05:30,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3323 [2020-10-14 22:05:30,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:30,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:05:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:05:30,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:30,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:30,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:30,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:30,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:30,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:30,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:05:30,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:30,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:30,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:30,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:30,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:30,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:30,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:31,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:31,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:31,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:05:31,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:31,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 22:05:31,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:31,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:31,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:31,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:05:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:31,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:31,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:31,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:05:31,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:31,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 22:05:31,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:31,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:05:31,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:31,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:05:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:31,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:31,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:31,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 22:05:31,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:31,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 22:05:31,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:31,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:31,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:31,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:31,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 22:05:31,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:31,692 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:05:31,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078812226] [2020-10-14 22:05:31,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:31,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:05:31,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501725061] [2020-10-14 22:05:31,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:05:31,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:31,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:05:31,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:05:31,695 INFO L87 Difference]: Start difference. First operand 12413 states and 14962 transitions. Second operand 7 states. [2020-10-14 22:05:43,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:43,330 INFO L93 Difference]: Finished difference Result 27057 states and 33681 transitions. [2020-10-14 22:05:43,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:05:43,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 527 [2020-10-14 22:05:43,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:43,395 INFO L225 Difference]: With dead ends: 27057 [2020-10-14 22:05:43,396 INFO L226 Difference]: Without dead ends: 15266 [2020-10-14 22:05:43,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:05:43,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15266 states. [2020-10-14 22:05:43,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15266 to 14942. [2020-10-14 22:05:43,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14942 states. [2020-10-14 22:05:43,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14942 states to 14942 states and 17855 transitions. [2020-10-14 22:05:43,708 INFO L78 Accepts]: Start accepts. Automaton has 14942 states and 17855 transitions. Word has length 527 [2020-10-14 22:05:43,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:43,710 INFO L479 AbstractCegarLoop]: Abstraction has 14942 states and 17855 transitions. [2020-10-14 22:05:43,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:05:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 14942 states and 17855 transitions. [2020-10-14 22:05:43,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2020-10-14 22:05:43,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:43,727 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:05:43,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:05:43,728 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:43,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:43,729 INFO L82 PathProgramCache]: Analyzing trace with hash 194384350, now seen corresponding path program 1 times [2020-10-14 22:05:43,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:43,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875161475] [2020-10-14 22:05:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:43,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:44,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:46,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:46,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 617 [2020-10-14 22:05:46,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:05:46,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2550 [2020-10-14 22:05:46,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:46,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:46,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:46,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:05:46,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 22:05:46,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:46,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:46,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:46,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:46,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:46,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:46,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:05:46,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:46,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:46,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:46,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:46,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:46,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:46,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:46,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:05:46,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:46,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 22:05:46,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:46,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:46,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:46,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:05:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:46,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:46,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:46,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:05:46,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:46,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 22:05:46,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:46,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:05:46,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:46,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:05:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:46,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:46,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:46,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 22:05:46,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:46,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 22:05:46,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:46,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:46,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:47,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:47,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 22:05:47,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 399 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:05:47,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875161475] [2020-10-14 22:05:47,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:47,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:05:47,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658025657] [2020-10-14 22:05:47,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:05:47,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:47,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:05:47,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:05:47,252 INFO L87 Difference]: Start difference. First operand 14942 states and 17855 transitions. Second operand 7 states. [2020-10-14 22:06:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:03,768 INFO L93 Difference]: Finished difference Result 29255 states and 36120 transitions. [2020-10-14 22:06:03,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:06:03,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 603 [2020-10-14 22:06:03,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:03,813 INFO L225 Difference]: With dead ends: 29255 [2020-10-14 22:06:03,813 INFO L226 Difference]: Without dead ends: 18043 [2020-10-14 22:06:03,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:06:03,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18043 states. [2020-10-14 22:06:04,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18043 to 17728. [2020-10-14 22:06:04,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17728 states. [2020-10-14 22:06:04,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17728 states to 17728 states and 21155 transitions. [2020-10-14 22:06:04,153 INFO L78 Accepts]: Start accepts. Automaton has 17728 states and 21155 transitions. Word has length 603 [2020-10-14 22:06:04,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:04,154 INFO L479 AbstractCegarLoop]: Abstraction has 17728 states and 21155 transitions. [2020-10-14 22:06:04,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:06:04,154 INFO L276 IsEmpty]: Start isEmpty. Operand 17728 states and 21155 transitions. [2020-10-14 22:06:04,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2020-10-14 22:06:04,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:04,178 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:06:04,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:06:04,179 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:04,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:04,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1367707024, now seen corresponding path program 1 times [2020-10-14 22:06:04,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:04,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143395329] [2020-10-14 22:06:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:04,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:04,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:07,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:07,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:08,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:08,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:09,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:09,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 657 [2020-10-14 22:06:09,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:06:09,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 22:06:09,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:09,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 480 [2020-10-14 22:06:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 22:06:09,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:09,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:09,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:09,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:09,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:09,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:09,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:06:09,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:09,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:09,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:09,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:09,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:09,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:09,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:06:09,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:09,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 22:06:09,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:09,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:09,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:09,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:06:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:09,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:09,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:09,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:06:09,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:09,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:06:09,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:09,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:09,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:09,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:09,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:09,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:09,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:06:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:09,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:09,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:09,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:06:09,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:09,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 22:06:09,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:09,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:09,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:09,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:09,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 22:06:09,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:09,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-14 22:06:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:09,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:09,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:09,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 22:06:09,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:09,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 22:06:09,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:09,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:09,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:09,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:09,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 22:06:09,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:10,810 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 482 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-14 22:06:10,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143395329] [2020-10-14 22:06:10,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:06:10,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:06:10,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749622875] [2020-10-14 22:06:10,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:06:10,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:10,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:06:10,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:06:10,812 INFO L87 Difference]: Start difference. First operand 17728 states and 21155 transitions. Second operand 7 states. [2020-10-14 22:06:21,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:21,195 INFO L93 Difference]: Finished difference Result 37593 states and 46396 transitions. [2020-10-14 22:06:21,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:06:21,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 641 [2020-10-14 22:06:21,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:21,245 INFO L225 Difference]: With dead ends: 37593 [2020-10-14 22:06:21,246 INFO L226 Difference]: Without dead ends: 21342 [2020-10-14 22:06:21,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:06:21,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21342 states. [2020-10-14 22:06:21,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21342 to 17347. [2020-10-14 22:06:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17347 states. [2020-10-14 22:06:21,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17347 states to 17347 states and 19632 transitions. [2020-10-14 22:06:21,591 INFO L78 Accepts]: Start accepts. Automaton has 17347 states and 19632 transitions. Word has length 641 [2020-10-14 22:06:21,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:21,592 INFO L479 AbstractCegarLoop]: Abstraction has 17347 states and 19632 transitions. [2020-10-14 22:06:21,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:06:21,592 INFO L276 IsEmpty]: Start isEmpty. Operand 17347 states and 19632 transitions. [2020-10-14 22:06:21,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2020-10-14 22:06:21,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:21,607 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:06:21,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:06:21,607 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:21,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:21,608 INFO L82 PathProgramCache]: Analyzing trace with hash -522004542, now seen corresponding path program 1 times [2020-10-14 22:06:21,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:21,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790674268] [2020-10-14 22:06:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:21,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:22,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:22,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:24,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:24,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 673 [2020-10-14 22:06:24,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:06:24,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2274 [2020-10-14 22:06:24,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:24,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:06:24,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:06:24,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-14 22:06:24,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:24,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:24,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:24,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:24,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:24,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:24,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:06:24,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:24,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:24,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:24,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:24,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:24,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:24,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:06:24,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:24,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:06:24,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:24,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:24,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:24,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:06:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:24,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:24,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:24,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:06:24,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:24,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 22:06:24,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:24,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:24,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:24,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:24,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:06:24,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:24,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:06:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:24,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:24,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:24,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 22:06:24,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:24,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 22:06:24,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:24,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-14 22:06:24,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:24,995 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 405 proven. 46 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-14 22:06:24,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790674268] [2020-10-14 22:06:24,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:06:24,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:06:24,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253102351] [2020-10-14 22:06:24,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:06:24,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:24,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:06:24,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:06:24,997 INFO L87 Difference]: Start difference. First operand 17347 states and 19632 transitions. Second operand 6 states. [2020-10-14 22:06:39,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:39,903 INFO L93 Difference]: Finished difference Result 39132 states and 45309 transitions. [2020-10-14 22:06:39,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:06:39,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 659 [2020-10-14 22:06:39,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:39,981 INFO L225 Difference]: With dead ends: 39132 [2020-10-14 22:06:39,982 INFO L226 Difference]: Without dead ends: 25515 [2020-10-14 22:06:40,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:06:40,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25515 states. [2020-10-14 22:06:40,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25515 to 25509. [2020-10-14 22:06:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25509 states. [2020-10-14 22:06:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25509 states to 25509 states and 29171 transitions. [2020-10-14 22:06:40,449 INFO L78 Accepts]: Start accepts. Automaton has 25509 states and 29171 transitions. Word has length 659 [2020-10-14 22:06:40,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:40,450 INFO L479 AbstractCegarLoop]: Abstraction has 25509 states and 29171 transitions. [2020-10-14 22:06:40,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:06:40,450 INFO L276 IsEmpty]: Start isEmpty. Operand 25509 states and 29171 transitions. [2020-10-14 22:06:40,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2020-10-14 22:06:40,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:40,469 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:06:40,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 22:06:40,470 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:40,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:40,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1982894350, now seen corresponding path program 1 times [2020-10-14 22:06:40,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:40,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279017933] [2020-10-14 22:06:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:40,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:40,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:44,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking...