/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:08:03,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:08:03,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:08:03,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:08:03,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:08:03,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:08:03,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:08:03,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:08:03,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:08:03,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:08:03,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:08:03,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:08:03,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:08:03,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:08:03,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:08:03,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:08:03,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:08:03,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:08:03,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:08:03,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:08:03,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:08:03,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:08:03,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:08:03,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:08:03,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:08:03,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:08:03,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:08:03,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:08:03,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:08:03,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:08:03,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:08:03,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:08:03,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:08:03,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:08:03,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:08:03,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:08:03,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:08:03,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:08:03,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:08:03,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:08:03,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:08:03,319 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 19:08:03,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:08:03,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:08:03,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:08:03,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:08:03,344 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:08:03,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:08:03,345 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:08:03,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:08:03,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:08:03,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:08:03,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:08:03,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:08:03,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:08:03,346 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:08:03,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:08:03,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:08:03,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:08:03,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:08:03,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:08:03,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:08:03,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:08:03,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:08:03,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:08:03,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:08:03,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:08:03,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:08:03,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:08:03,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:08:03,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:08:03,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:08:03,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:08:03,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:08:03,664 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:08:03,666 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:08:03,667 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:08:03,668 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label00.c [2020-10-14 19:08:03,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c585405f/ed0fd724492a4062b379ecda90cd9d59/FLAG184ec9e15 [2020-10-14 19:08:04,400 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:08:04,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label00.c [2020-10-14 19:08:04,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c585405f/ed0fd724492a4062b379ecda90cd9d59/FLAG184ec9e15 [2020-10-14 19:08:04,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c585405f/ed0fd724492a4062b379ecda90cd9d59 [2020-10-14 19:08:04,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:08:04,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:08:04,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:08:04,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:08:04,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:08:04,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:08:04" (1/1) ... [2020-10-14 19:08:04,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc1cbb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:04, skipping insertion in model container [2020-10-14 19:08:04,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:08:04" (1/1) ... [2020-10-14 19:08:04,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:08:04,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:08:05,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:08:05,559 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:08:05,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:08:05,986 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:08:05,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:05 WrapperNode [2020-10-14 19:08:05,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:08:05,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:08:05,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:08:05,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:08:06,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:05" (1/1) ... [2020-10-14 19:08:06,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:05" (1/1) ... [2020-10-14 19:08:06,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:05" (1/1) ... [2020-10-14 19:08:06,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:05" (1/1) ... [2020-10-14 19:08:06,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:05" (1/1) ... [2020-10-14 19:08:06,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:05" (1/1) ... [2020-10-14 19:08:06,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:05" (1/1) ... [2020-10-14 19:08:06,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:08:06,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:08:06,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:08:06,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:08:06,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:08:06,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:08:06,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:08:06,253 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:08:06,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:08:06,253 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:08:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:08:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:08:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:08:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:08:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:08:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:08:08,346 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:08:08,346 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:08:08,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:08:08 BoogieIcfgContainer [2020-10-14 19:08:08,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:08:08,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:08:08,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:08:08,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:08:08,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:08:04" (1/3) ... [2020-10-14 19:08:08,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3466a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:08:08, skipping insertion in model container [2020-10-14 19:08:08,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:05" (2/3) ... [2020-10-14 19:08:08,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3466a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:08:08, skipping insertion in model container [2020-10-14 19:08:08,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:08:08" (3/3) ... [2020-10-14 19:08:08,363 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label00.c [2020-10-14 19:08:08,374 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:08:08,383 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:08:08,399 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:08:08,429 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:08:08,429 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:08:08,429 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:08:08,430 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:08:08,430 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:08:08,430 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:08:08,430 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:08:08,430 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:08:08,457 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 19:08:08,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 19:08:08,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:08,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:08:08,477 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:08,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:08,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1862638405, now seen corresponding path program 1 times [2020-10-14 19:08:08,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:08,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478566782] [2020-10-14 19:08:08,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:09,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:09,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:13,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:13,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 19:08:13,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:08:13,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4335 [2020-10-14 19:08:13,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:13,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:08:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:08:13,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 19:08:13,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:08:13,728 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:13,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:13,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:13,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:13,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:13,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:13,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 19:08:13,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:13,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:13,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:13,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:13,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:08:13,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:08:13,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478566782] [2020-10-14 19:08:13,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:08:13,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 19:08:13,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162624851] [2020-10-14 19:08:13,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:08:13,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:13,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:08:13,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:08:13,880 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 5 states. [2020-10-14 19:08:14,078 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:08:14,445 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:08:18,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:08:18,401 INFO L93 Difference]: Finished difference Result 1093 states and 1952 transitions. [2020-10-14 19:08:18,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:08:18,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-14 19:08:18,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:08:18,428 INFO L225 Difference]: With dead ends: 1093 [2020-10-14 19:08:18,428 INFO L226 Difference]: Without dead ends: 685 [2020-10-14 19:08:18,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:08:18,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-10-14 19:08:18,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 677. [2020-10-14 19:08:18,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2020-10-14 19:08:18,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1061 transitions. [2020-10-14 19:08:18,540 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1061 transitions. Word has length 198 [2020-10-14 19:08:18,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:08:18,542 INFO L479 AbstractCegarLoop]: Abstraction has 677 states and 1061 transitions. [2020-10-14 19:08:18,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:08:18,542 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1061 transitions. [2020-10-14 19:08:18,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-14 19:08:18,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:18,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:08:18,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:08:18,551 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:18,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:18,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1394096354, now seen corresponding path program 1 times [2020-10-14 19:08:18,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:18,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119667054] [2020-10-14 19:08:18,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:18,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:19,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:19,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:21,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:21,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:21,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 19:08:21,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:08:21,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3153 [2020-10-14 19:08:21,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:21,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:21,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:08:21,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:08:21,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-14 19:08:21,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:08:22,211 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:22,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:22,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:22,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:22,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:22,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:22,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:08:22,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:22,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:08:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:22,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:08:22,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:22,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:08:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:22,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:22,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:22,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:08:22,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:22,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 19:08:22,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:22,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:22,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:22,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:22,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:08:22,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:08:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:08:23,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119667054] [2020-10-14 19:08:23,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:08:23,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:08:23,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669832648] [2020-10-14 19:08:23,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:08:23,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:23,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:08:23,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:08:23,055 INFO L87 Difference]: Start difference. First operand 677 states and 1061 transitions. Second operand 5 states. [2020-10-14 19:08:23,337 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 19:08:25,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:08:25,862 INFO L93 Difference]: Finished difference Result 1541 states and 2461 transitions. [2020-10-14 19:08:25,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:08:25,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-10-14 19:08:25,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:08:25,871 INFO L225 Difference]: With dead ends: 1541 [2020-10-14 19:08:25,871 INFO L226 Difference]: Without dead ends: 820 [2020-10-14 19:08:25,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:08:25,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-10-14 19:08:25,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 815. [2020-10-14 19:08:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-10-14 19:08:25,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1206 transitions. [2020-10-14 19:08:25,918 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1206 transitions. Word has length 207 [2020-10-14 19:08:25,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:08:25,919 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 1206 transitions. [2020-10-14 19:08:25,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:08:25,919 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1206 transitions. [2020-10-14 19:08:25,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-14 19:08:25,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:25,924 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:08:25,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:08:25,924 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:25,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:25,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1094558799, now seen corresponding path program 1 times [2020-10-14 19:08:25,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:25,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151047648] [2020-10-14 19:08:25,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:26,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:26,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:28,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:28,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:28,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 19:08:28,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:08:28,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2855 [2020-10-14 19:08:28,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:28,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:28,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:08:28,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:08:28,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-14 19:08:28,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:29,183 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:29,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:29,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:29,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:29,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:29,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:08:29,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:29,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:29,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:08:29,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:29,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:08:29,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:29,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:08:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:29,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:29,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:29,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:08:29,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:29,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:08:29,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:29,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:08:29,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:08:29,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151047648] [2020-10-14 19:08:29,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:08:29,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:08:29,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865231399] [2020-10-14 19:08:29,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:08:29,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:29,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:08:29,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:08:29,609 INFO L87 Difference]: Start difference. First operand 815 states and 1206 transitions. Second operand 5 states. [2020-10-14 19:08:29,919 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 19:08:32,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:08:32,267 INFO L93 Difference]: Finished difference Result 1806 states and 2740 transitions. [2020-10-14 19:08:32,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:08:32,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2020-10-14 19:08:32,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:08:32,275 INFO L225 Difference]: With dead ends: 1806 [2020-10-14 19:08:32,275 INFO L226 Difference]: Without dead ends: 819 [2020-10-14 19:08:32,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:08:32,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-10-14 19:08:32,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 815. [2020-10-14 19:08:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-10-14 19:08:32,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1136 transitions. [2020-10-14 19:08:32,310 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1136 transitions. Word has length 210 [2020-10-14 19:08:32,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:08:32,310 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 1136 transitions. [2020-10-14 19:08:32,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:08:32,310 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1136 transitions. [2020-10-14 19:08:32,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 19:08:32,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:32,315 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:08:32,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:08:32,315 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:32,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:32,316 INFO L82 PathProgramCache]: Analyzing trace with hash 944450125, now seen corresponding path program 1 times [2020-10-14 19:08:32,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:32,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540556942] [2020-10-14 19:08:32,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:32,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:32,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:34,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:35,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:35,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-14 19:08:35,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:08:35,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2832 [2020-10-14 19:08:35,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:35,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:08:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 19:08:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 19:08:35,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:08:35,572 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:35,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:35,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:35,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:35,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:35,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:35,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:08:35,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:35,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:08:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:08:35,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:35,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:08:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:35,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:35,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:35,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:08:35,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:35,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 19:08:35,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:35,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:35,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:35,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:35,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 19:08:35,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:36,146 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:08:36,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540556942] [2020-10-14 19:08:36,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:08:36,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:08:36,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813386532] [2020-10-14 19:08:36,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:08:36,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:36,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:08:36,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:08:36,149 INFO L87 Difference]: Start difference. First operand 815 states and 1136 transitions. Second operand 5 states. [2020-10-14 19:08:36,532 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 19:08:38,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:08:38,521 INFO L93 Difference]: Finished difference Result 1801 states and 2570 transitions. [2020-10-14 19:08:38,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:08:38,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-14 19:08:38,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:08:38,533 INFO L225 Difference]: With dead ends: 1801 [2020-10-14 19:08:38,533 INFO L226 Difference]: Without dead ends: 883 [2020-10-14 19:08:38,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:08:38,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-10-14 19:08:38,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 879. [2020-10-14 19:08:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-10-14 19:08:38,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1205 transitions. [2020-10-14 19:08:38,593 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1205 transitions. Word has length 212 [2020-10-14 19:08:38,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:08:38,594 INFO L479 AbstractCegarLoop]: Abstraction has 879 states and 1205 transitions. [2020-10-14 19:08:38,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:08:38,595 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1205 transitions. [2020-10-14 19:08:38,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-14 19:08:38,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:38,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:08:38,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:08:38,600 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:38,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:38,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1198199242, now seen corresponding path program 1 times [2020-10-14 19:08:38,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:38,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176653183] [2020-10-14 19:08:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:38,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:39,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:40,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:40,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:40,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-14 19:08:40,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:08:40,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2343 [2020-10-14 19:08:40,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:40,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:40,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:08:40,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 19:08:40,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 19:08:40,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:08:41,369 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:41,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:41,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:41,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:41,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:41,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:41,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:08:41,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:41,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:08:41,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:41,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:08:41,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:41,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:08:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:41,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:41,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:41,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:08:41,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:41,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 19:08:41,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:41,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 19:08:41,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:08:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:08:41,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176653183] [2020-10-14 19:08:41,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:08:41,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:08:41,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801154722] [2020-10-14 19:08:41,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:08:41,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:41,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:08:41,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:08:41,868 INFO L87 Difference]: Start difference. First operand 879 states and 1205 transitions. Second operand 5 states. [2020-10-14 19:08:42,094 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:08:44,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:08:44,574 INFO L93 Difference]: Finished difference Result 2408 states and 3413 transitions. [2020-10-14 19:08:44,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:08:44,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2020-10-14 19:08:44,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:08:44,589 INFO L225 Difference]: With dead ends: 2408 [2020-10-14 19:08:44,589 INFO L226 Difference]: Without dead ends: 1535 [2020-10-14 19:08:44,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:08:44,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2020-10-14 19:08:44,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1515. [2020-10-14 19:08:44,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1515 states. [2020-10-14 19:08:44,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2110 transitions. [2020-10-14 19:08:44,639 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2110 transitions. Word has length 226 [2020-10-14 19:08:44,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:08:44,640 INFO L479 AbstractCegarLoop]: Abstraction has 1515 states and 2110 transitions. [2020-10-14 19:08:44,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:08:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2110 transitions. [2020-10-14 19:08:44,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-14 19:08:44,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:44,646 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:08:44,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:08:44,647 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:44,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:44,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1984031853, now seen corresponding path program 1 times [2020-10-14 19:08:44,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:44,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232344505] [2020-10-14 19:08:44,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:44,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:44,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:46,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:47,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:49,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:49,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-14 19:08:49,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:08:49,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 19:08:49,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:49,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:08:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 19:08:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 19:08:49,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:08:49,975 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:49,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:49,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:49,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:49,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:49,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:49,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:08:49,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:49,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:49,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:08:49,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:49,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:08:49,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:50,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:08:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:50,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:50,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:50,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:08:50,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:50,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 19:08:50,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:50,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:50,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:08:50,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:08:50,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:50,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 19:08:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:50,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:50,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:50,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:08:50,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 19:08:50,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:50,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:08:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:08:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 19:08:50,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232344505] [2020-10-14 19:08:50,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:08:50,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:08:50,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418591134] [2020-10-14 19:08:50,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:08:50,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:50,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:08:50,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:08:50,280 INFO L87 Difference]: Start difference. First operand 1515 states and 2110 transitions. Second operand 5 states. [2020-10-14 19:08:50,451 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:08:52,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:08:52,628 INFO L93 Difference]: Finished difference Result 4296 states and 6175 transitions. [2020-10-14 19:08:52,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:08:52,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 243 [2020-10-14 19:08:52,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:08:52,646 INFO L225 Difference]: With dead ends: 4296 [2020-10-14 19:08:52,647 INFO L226 Difference]: Without dead ends: 2787 [2020-10-14 19:08:52,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:08:52,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2020-10-14 19:08:52,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2781. [2020-10-14 19:08:52,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2781 states. [2020-10-14 19:08:52,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2781 states to 2781 states and 3815 transitions. [2020-10-14 19:08:52,731 INFO L78 Accepts]: Start accepts. Automaton has 2781 states and 3815 transitions. Word has length 243 [2020-10-14 19:08:52,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:08:52,731 INFO L479 AbstractCegarLoop]: Abstraction has 2781 states and 3815 transitions. [2020-10-14 19:08:52,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:08:52,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2781 states and 3815 transitions. [2020-10-14 19:08:52,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-14 19:08:52,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:52,742 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, 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] [2020-10-14 19:08:52,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:08:52,742 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:52,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:52,743 INFO L82 PathProgramCache]: Analyzing trace with hash 386058819, now seen corresponding path program 1 times [2020-10-14 19:08:52,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:52,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888501621] [2020-10-14 19:08:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:52,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:52,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:53,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:54,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:56,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:57,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:57,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-14 19:08:57,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:08:57,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 19:08:57,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:57,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:57,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:08:57,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:08:57,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-14 19:08:57,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:08:58,029 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:58,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:58,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:58,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:58,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:58,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:58,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:08:58,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:58,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:58,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:58,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:58,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:08:58,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:58,176 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 19:08:58,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:08:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:58,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:58,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:58,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:08:58,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:58,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 19:08:58,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:58,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:58,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:08:58,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:08:58,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:08:58,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:08:58,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 19:08:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:58,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:58,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:58,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:58,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 19:08:58,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:08:58,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 19:08:58,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:58,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:08:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:08:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 19:08:58,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:08:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:08:58,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888501621] [2020-10-14 19:08:58,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:08:58,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:08:58,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341517766] [2020-10-14 19:08:58,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:08:58,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:58,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:08:58,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:08:58,609 INFO L87 Difference]: Start difference. First operand 2781 states and 3815 transitions. Second operand 8 states. [2020-10-14 19:08:58,751 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:08:59,129 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:09:01,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:01,316 INFO L93 Difference]: Finished difference Result 8221 states and 11986 transitions. [2020-10-14 19:09:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:09:01,316 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 273 [2020-10-14 19:09:01,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:01,345 INFO L225 Difference]: With dead ends: 8221 [2020-10-14 19:09:01,345 INFO L226 Difference]: Without dead ends: 5446 [2020-10-14 19:09:01,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:09:01,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5446 states. [2020-10-14 19:09:01,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 5382. [2020-10-14 19:09:01,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5382 states. [2020-10-14 19:09:01,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 7466 transitions. [2020-10-14 19:09:01,543 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 7466 transitions. Word has length 273 [2020-10-14 19:09:01,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:01,544 INFO L479 AbstractCegarLoop]: Abstraction has 5382 states and 7466 transitions. [2020-10-14 19:09:01,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:09:01,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 7466 transitions. [2020-10-14 19:09:01,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-14 19:09:01,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:01,562 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, 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] [2020-10-14 19:09:01,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:09:01,563 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:01,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:01,563 INFO L82 PathProgramCache]: Analyzing trace with hash -632841577, now seen corresponding path program 1 times [2020-10-14 19:09:01,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:01,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664666259] [2020-10-14 19:09:01,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:01,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:01,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:02,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:04,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:04,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-14 19:09:04,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:09:04,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2627 [2020-10-14 19:09:04,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:04,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:09:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:09:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 19:09:04,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:04,414 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:04,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:04,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:04,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:04,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:04,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:04,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:09:04,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:04,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:09:04,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:04,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:04,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:04,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:04,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:04,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 19:09:04,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:09:04,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 19:09:04,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:04,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:04,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:04,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:04,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 19:09:04,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:04,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 19:09:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:04,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:04,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:04,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 19:09:04,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:04,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 19:09:04,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:04,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:04,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 19:09:04,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 19:09:04,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664666259] [2020-10-14 19:09:04,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:04,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:09:04,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521246380] [2020-10-14 19:09:04,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:09:04,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:04,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:09:04,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:09:04,862 INFO L87 Difference]: Start difference. First operand 5382 states and 7466 transitions. Second operand 7 states. [2020-10-14 19:09:05,009 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:06,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:06,485 INFO L93 Difference]: Finished difference Result 10726 states and 14968 transitions. [2020-10-14 19:09:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 19:09:06,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2020-10-14 19:09:06,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:06,509 INFO L225 Difference]: With dead ends: 10726 [2020-10-14 19:09:06,509 INFO L226 Difference]: Without dead ends: 5350 [2020-10-14 19:09:06,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:09:06,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2020-10-14 19:09:06,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 5342. [2020-10-14 19:09:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5342 states. [2020-10-14 19:09:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 7333 transitions. [2020-10-14 19:09:06,674 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 7333 transitions. Word has length 276 [2020-10-14 19:09:06,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:06,674 INFO L479 AbstractCegarLoop]: Abstraction has 5342 states and 7333 transitions. [2020-10-14 19:09:06,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:09:06,675 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 7333 transitions. [2020-10-14 19:09:06,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-14 19:09:06,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:06,705 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:09:06,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:09:06,705 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:06,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:06,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1036187343, now seen corresponding path program 1 times [2020-10-14 19:09:06,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:06,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354847880] [2020-10-14 19:09:06,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:06,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:06,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:09,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:09,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-14 19:09:09,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:09:09,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2727 [2020-10-14 19:09:09,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:09,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:09,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:09,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 19:09:09,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 19:09:09,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:09,700 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:09,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:09,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:09,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:09,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:09,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:09,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:09:09,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:09,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:09,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:09,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:09,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:09,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:09,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:09,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:09,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:09,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 19:09:09,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:09,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 19:09:09,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:09,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:09,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:09,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:09,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 19:09:09,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 82 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:09:09,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354847880] [2020-10-14 19:09:09,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:09,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:09:09,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915979620] [2020-10-14 19:09:09,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:09:09,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:09,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:09:09,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:09:09,985 INFO L87 Difference]: Start difference. First operand 5342 states and 7333 transitions. Second operand 5 states. [2020-10-14 19:09:10,126 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:12,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:12,316 INFO L93 Difference]: Finished difference Result 15776 states and 22211 transitions. [2020-10-14 19:09:12,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:09:12,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2020-10-14 19:09:12,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:12,372 INFO L225 Difference]: With dead ends: 15776 [2020-10-14 19:09:12,373 INFO L226 Difference]: Without dead ends: 10440 [2020-10-14 19:09:12,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:09:12,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10440 states. [2020-10-14 19:09:12,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10440 to 10418. [2020-10-14 19:09:12,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10418 states. [2020-10-14 19:09:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10418 states to 10418 states and 14202 transitions. [2020-10-14 19:09:12,708 INFO L78 Accepts]: Start accepts. Automaton has 10418 states and 14202 transitions. Word has length 284 [2020-10-14 19:09:12,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:12,709 INFO L479 AbstractCegarLoop]: Abstraction has 10418 states and 14202 transitions. [2020-10-14 19:09:12,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:09:12,709 INFO L276 IsEmpty]: Start isEmpty. Operand 10418 states and 14202 transitions. [2020-10-14 19:09:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-14 19:09:12,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:12,747 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:09:12,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:09:12,747 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:12,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:12,747 INFO L82 PathProgramCache]: Analyzing trace with hash 2037656347, now seen corresponding path program 1 times [2020-10-14 19:09:12,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:12,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680899056] [2020-10-14 19:09:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:12,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:13,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:14,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:16,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:16,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 19:09:16,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:09:16,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3188 [2020-10-14 19:09:16,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:16,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 19:09:16,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:09:16,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-14 19:09:16,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:16,479 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:16,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:16,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:16,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:16,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:16,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:16,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:09:16,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:16,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:16,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:09:16,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:16,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:16,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:16,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:16,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 19:09:16,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:16,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 19:09:16,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:16,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:16,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:16,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:16,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 19:09:16,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:16,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 19:09:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:16,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:16,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:16,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 19:09:16,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:16,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 19:09:16,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:16,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:09:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 19:09:16,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 19:09:17,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680899056] [2020-10-14 19:09:17,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:17,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:09:17,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008545588] [2020-10-14 19:09:17,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:09:17,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:17,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:09:17,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:09:17,587 INFO L87 Difference]: Start difference. First operand 10418 states and 14202 transitions. Second operand 9 states. [2020-10-14 19:09:17,735 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:09:19,451 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-14 19:09:20,280 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 19:09:22,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:22,766 INFO L93 Difference]: Finished difference Result 32161 states and 44518 transitions. [2020-10-14 19:09:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 19:09:22,767 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 298 [2020-10-14 19:09:22,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:22,844 INFO L225 Difference]: With dead ends: 32161 [2020-10-14 19:09:22,844 INFO L226 Difference]: Without dead ends: 21605 [2020-10-14 19:09:22,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:09:22,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21605 states. [2020-10-14 19:09:23,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21605 to 21243. [2020-10-14 19:09:23,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21243 states. [2020-10-14 19:09:23,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21243 states to 21243 states and 28953 transitions. [2020-10-14 19:09:23,396 INFO L78 Accepts]: Start accepts. Automaton has 21243 states and 28953 transitions. Word has length 298 [2020-10-14 19:09:23,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:23,397 INFO L479 AbstractCegarLoop]: Abstraction has 21243 states and 28953 transitions. [2020-10-14 19:09:23,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:09:23,397 INFO L276 IsEmpty]: Start isEmpty. Operand 21243 states and 28953 transitions. [2020-10-14 19:09:23,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-14 19:09:23,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:23,483 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:09:23,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 19:09:23,483 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:23,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:23,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1888683979, now seen corresponding path program 1 times [2020-10-14 19:09:23,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:23,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816611732] [2020-10-14 19:09:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:23,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:24,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:27,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:27,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-14 19:09:27,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:09:27,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4112 [2020-10-14 19:09:27,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:27,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:27,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:09:27,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:09:27,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 19:09:27,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:27,898 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:27,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:27,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:27,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:27,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:27,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:27,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:09:27,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:27,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:09:27,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:27,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:28,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:28,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:28,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 19:09:28,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:28,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 19:09:28,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:28,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 19:09:28,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:09:28,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816611732] [2020-10-14 19:09:28,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:09:28,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 19:09:28,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480409387] [2020-10-14 19:09:28,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:09:28,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:28,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:09:28,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:09:28,403 INFO L87 Difference]: Start difference. First operand 21243 states and 28953 transitions. Second operand 7 states. [2020-10-14 19:09:28,538 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:09:29,459 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:09:31,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:31,138 INFO L93 Difference]: Finished difference Result 43570 states and 59451 transitions. [2020-10-14 19:09:31,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:09:31,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 317 [2020-10-14 19:09:31,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:31,199 INFO L225 Difference]: With dead ends: 43570 [2020-10-14 19:09:31,200 INFO L226 Difference]: Without dead ends: 22333 [2020-10-14 19:09:31,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:09:31,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22333 states. [2020-10-14 19:09:31,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22333 to 22174. [2020-10-14 19:09:31,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22174 states. [2020-10-14 19:09:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22174 states to 22174 states and 30246 transitions. [2020-10-14 19:09:31,847 INFO L78 Accepts]: Start accepts. Automaton has 22174 states and 30246 transitions. Word has length 317 [2020-10-14 19:09:31,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:31,847 INFO L479 AbstractCegarLoop]: Abstraction has 22174 states and 30246 transitions. [2020-10-14 19:09:31,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:09:31,847 INFO L276 IsEmpty]: Start isEmpty. Operand 22174 states and 30246 transitions. [2020-10-14 19:09:31,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-14 19:09:31,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:31,895 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:09:31,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 19:09:31,896 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:31,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:31,896 INFO L82 PathProgramCache]: Analyzing trace with hash -567183716, now seen corresponding path program 1 times [2020-10-14 19:09:31,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:31,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103633895] [2020-10-14 19:09:31,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:32,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:32,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:32,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-14 19:09:32,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:32,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 904 [2020-10-14 19:09:32,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:32,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:32,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:09:32,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:09:32,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 19:09:32,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:33,111 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:33,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:33,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:33,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:33,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:33,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:33,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:09:33,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:33,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:09:33,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:33,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:33,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:33,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:33,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:09:33,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:33,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:09:33,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:33,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:33,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:33,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:33,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:09:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:33,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:09:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:33,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:33,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:33,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 19:09:33,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:33,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 19:09:33,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:33,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 19:09:33,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 125 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 19:09:33,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103633895] [2020-10-14 19:09:33,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:33,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:09:33,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033081470] [2020-10-14 19:09:33,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:09:33,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:33,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:09:33,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:09:33,795 INFO L87 Difference]: Start difference. First operand 22174 states and 30246 transitions. Second operand 9 states. [2020-10-14 19:09:33,938 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:09:35,074 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:09:36,304 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:09:37,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:37,467 INFO L93 Difference]: Finished difference Result 54675 states and 75550 transitions. [2020-10-14 19:09:37,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:09:37,467 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 328 [2020-10-14 19:09:37,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:37,570 INFO L225 Difference]: With dead ends: 54675 [2020-10-14 19:09:37,570 INFO L226 Difference]: Without dead ends: 32926 [2020-10-14 19:09:37,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:09:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32926 states. [2020-10-14 19:09:38,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32926 to 32400. [2020-10-14 19:09:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32400 states. [2020-10-14 19:09:38,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32400 states to 32400 states and 44739 transitions. [2020-10-14 19:09:38,306 INFO L78 Accepts]: Start accepts. Automaton has 32400 states and 44739 transitions. Word has length 328 [2020-10-14 19:09:38,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:38,306 INFO L479 AbstractCegarLoop]: Abstraction has 32400 states and 44739 transitions. [2020-10-14 19:09:38,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:09:38,307 INFO L276 IsEmpty]: Start isEmpty. Operand 32400 states and 44739 transitions. [2020-10-14 19:09:38,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-14 19:09:38,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:38,379 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:09:38,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 19:09:38,380 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:38,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:38,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1759189806, now seen corresponding path program 1 times [2020-10-14 19:09:38,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:38,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316257502] [2020-10-14 19:09:38,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:38,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:38,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:38,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:41,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:43,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:43,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-14 19:09:43,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:09:43,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 19:09:43,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:43,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:09:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 19:09:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 19:09:43,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:43,675 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:43,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:43,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:43,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:43,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:43,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:43,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:09:43,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:43,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:43,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:43,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:43,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:43,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:43,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:09:43,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:43,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:09:43,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:43,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 19:09:43,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:43,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 19:09:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:43,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:43,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:43,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:09:43,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:43,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 19:09:43,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:43,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:09:43,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:43,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 19:09:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:43,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:43,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:43,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:09:43,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:43,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 19:09:43,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:43,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:43,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:43,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:43,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 19:09:43,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:44,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 19:09:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:44,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:44,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:44,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 19:09:44,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 19:09:44,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:44,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:44,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:44,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 19:09:44,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 217 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 19:09:44,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316257502] [2020-10-14 19:09:44,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:44,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:09:44,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749875212] [2020-10-14 19:09:44,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:09:44,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:44,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:09:44,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:09:44,406 INFO L87 Difference]: Start difference. First operand 32400 states and 44739 transitions. Second operand 9 states. [2020-10-14 19:09:44,667 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:45,471 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:09:49,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:49,982 INFO L93 Difference]: Finished difference Result 111244 states and 171025 transitions. [2020-10-14 19:09:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:09:49,983 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 333 [2020-10-14 19:09:49,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:50,437 INFO L225 Difference]: With dead ends: 111244 [2020-10-14 19:09:50,437 INFO L226 Difference]: Without dead ends: 79269 [2020-10-14 19:09:50,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-14 19:09:50,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79269 states. [2020-10-14 19:09:52,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79269 to 77671. [2020-10-14 19:09:52,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77671 states. [2020-10-14 19:09:52,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77671 states to 77671 states and 112345 transitions. [2020-10-14 19:09:52,547 INFO L78 Accepts]: Start accepts. Automaton has 77671 states and 112345 transitions. Word has length 333 [2020-10-14 19:09:52,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:52,548 INFO L479 AbstractCegarLoop]: Abstraction has 77671 states and 112345 transitions. [2020-10-14 19:09:52,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:09:52,548 INFO L276 IsEmpty]: Start isEmpty. Operand 77671 states and 112345 transitions. [2020-10-14 19:09:52,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-14 19:09:52,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:52,723 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:09:52,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 19:09:52,724 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:52,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:52,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1057856750, now seen corresponding path program 1 times [2020-10-14 19:09:52,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:52,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139502209] [2020-10-14 19:09:52,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:52,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:52,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:53,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:54,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:54,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:56,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:57,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:57,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-14 19:09:57,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:09:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-14 19:09:57,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:57,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-14 19:09:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 19:09:57,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:58,072 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:58,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:58,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:58,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:58,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:58,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:58,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:09:58,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:58,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:58,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:58,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:58,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:58,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:58,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:58,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:58,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:58,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:09:58,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:58,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:09:58,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:58,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:58,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:58,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 19:09:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:58,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:58,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:58,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:09:58,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:58,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:09:58,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:58,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:58,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:58,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 19:09:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:58,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:58,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:58,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:09:58,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:58,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:09:58,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:58,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:58,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:58,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:58,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 19:09:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:58,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:58,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:58,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:09:58,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:58,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:09:58,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:58,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:58,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:58,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:58,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 19:09:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:58,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:58,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:58,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:09:58,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:58,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 19:09:58,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:58,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:58,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:58,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:58,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 19:09:58,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:58,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-14 19:09:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:58,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:58,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:58,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 19:09:58,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:58,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 19:09:58,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:58,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:58,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:58,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:58,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 19:09:58,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:58,667 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-10-14 19:09:58,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139502209] [2020-10-14 19:09:58,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:58,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:09:58,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345402548] [2020-10-14 19:09:58,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:09:58,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:58,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:09:58,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:09:58,669 INFO L87 Difference]: Start difference. First operand 77671 states and 112345 transitions. Second operand 7 states. [2020-10-14 19:09:59,086 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:59,927 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:10:02,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:02,830 INFO L93 Difference]: Finished difference Result 150317 states and 239926 transitions. [2020-10-14 19:10:02,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:10:02,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 367 [2020-10-14 19:10:02,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:03,306 INFO L225 Difference]: With dead ends: 150317 [2020-10-14 19:10:03,307 INFO L226 Difference]: Without dead ends: 73071 [2020-10-14 19:10:03,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:10:03,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73071 states. [2020-10-14 19:10:05,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73071 to 70279. [2020-10-14 19:10:05,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70279 states. [2020-10-14 19:10:05,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70279 states to 70279 states and 94940 transitions. [2020-10-14 19:10:05,858 INFO L78 Accepts]: Start accepts. Automaton has 70279 states and 94940 transitions. Word has length 367 [2020-10-14 19:10:05,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:05,859 INFO L479 AbstractCegarLoop]: Abstraction has 70279 states and 94940 transitions. [2020-10-14 19:10:05,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:10:05,859 INFO L276 IsEmpty]: Start isEmpty. Operand 70279 states and 94940 transitions. [2020-10-14 19:10:05,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-10-14 19:10:05,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:05,982 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:10:05,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 19:10:05,983 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:05,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:05,983 INFO L82 PathProgramCache]: Analyzing trace with hash -463004413, now seen corresponding path program 1 times [2020-10-14 19:10:05,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:05,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797932615] [2020-10-14 19:10:05,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:06,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:06,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:06,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:10,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:11,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:11,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-14 19:10:11,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:10:11,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 19:10:11,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:11,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:11,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:10:11,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:10:11,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 19:10:11,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:11,220 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:11,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:11,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:11,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:11,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:11,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:10:11,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:11,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:11,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:11,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:11,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:11,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 19:10:11,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:11,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 19:10:11,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:11,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:11,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:11,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:10:11,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:11,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 19:10:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:11,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:11,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:11,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:11,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:10:11,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:10:11,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 19:10:11,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:11,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:11,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:11,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:11,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 19:10:11,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:11,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 19:10:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:11,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:11,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:11,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 19:10:11,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:11,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-14 19:10:11,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:11,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:11,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:11,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:11,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 19:10:11,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 211 proven. 6 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-14 19:10:12,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797932615] [2020-10-14 19:10:12,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:12,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:10:12,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611989835] [2020-10-14 19:10:12,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:10:12,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:12,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:10:12,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:10:12,111 INFO L87 Difference]: Start difference. First operand 70279 states and 94940 transitions. Second operand 7 states. [2020-10-14 19:10:12,406 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:12,687 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:18,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:18,680 INFO L93 Difference]: Finished difference Result 259147 states and 380935 transitions. [2020-10-14 19:10:18,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:10:18,680 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 378 [2020-10-14 19:10:18,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:22,203 INFO L225 Difference]: With dead ends: 259147 [2020-10-14 19:10:22,203 INFO L226 Difference]: Without dead ends: 189293 [2020-10-14 19:10:22,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:10:22,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189293 states. [2020-10-14 19:10:25,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189293 to 188519. [2020-10-14 19:10:25,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188519 states. [2020-10-14 19:10:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188519 states to 188519 states and 275493 transitions. [2020-10-14 19:10:26,583 INFO L78 Accepts]: Start accepts. Automaton has 188519 states and 275493 transitions. Word has length 378 [2020-10-14 19:10:26,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:26,584 INFO L479 AbstractCegarLoop]: Abstraction has 188519 states and 275493 transitions. [2020-10-14 19:10:26,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:10:26,584 INFO L276 IsEmpty]: Start isEmpty. Operand 188519 states and 275493 transitions. [2020-10-14 19:10:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-14 19:10:27,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:27,245 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:10:27,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 19:10:27,245 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:27,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:27,245 INFO L82 PathProgramCache]: Analyzing trace with hash 139878599, now seen corresponding path program 1 times [2020-10-14 19:10:27,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:27,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123644331] [2020-10-14 19:10:27,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:27,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:27,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:28,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:31,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:32,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:32,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-14 19:10:32,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:10:32,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 19:10:32,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:32,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:10:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 19:10:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 19:10:32,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:32,502 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:32,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:32,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:32,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:32,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:32,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:32,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:10:32,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:32,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:32,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:32,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:32,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:32,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:32,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:32,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:32,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:32,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:10:32,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:32,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 19:10:32,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:32,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:32,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:32,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:32,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 19:10:32,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:32,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 19:10:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:32,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:32,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:32,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:10:32,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:32,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 19:10:32,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:32,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:32,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:32,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:32,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 19:10:32,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:32,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 19:10:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:32,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:32,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:32,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 19:10:32,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:32,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 19:10:32,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:32,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:32,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:32,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:32,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 19:10:32,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:33,132 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 238 proven. 37 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 19:10:33,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123644331] [2020-10-14 19:10:33,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:33,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:10:33,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875185054] [2020-10-14 19:10:33,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:10:33,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:33,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:10:33,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:10:33,134 INFO L87 Difference]: Start difference. First operand 188519 states and 275493 transitions. Second operand 8 states. [2020-10-14 19:10:33,385 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:34,028 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:49,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:49,343 INFO L93 Difference]: Finished difference Result 469007 states and 767197 transitions. [2020-10-14 19:10:49,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:10:49,344 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 387 [2020-10-14 19:10:49,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:50,839 INFO L225 Difference]: With dead ends: 469007 [2020-10-14 19:10:50,839 INFO L226 Difference]: Without dead ends: 281162 [2020-10-14 19:10:51,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-14 19:10:51,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281162 states. [2020-10-14 19:11:02,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281162 to 268517. [2020-10-14 19:11:02,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268517 states. [2020-10-14 19:11:04,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268517 states to 268517 states and 370709 transitions. [2020-10-14 19:11:04,242 INFO L78 Accepts]: Start accepts. Automaton has 268517 states and 370709 transitions. Word has length 387 [2020-10-14 19:11:04,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:04,242 INFO L479 AbstractCegarLoop]: Abstraction has 268517 states and 370709 transitions. [2020-10-14 19:11:04,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:11:04,242 INFO L276 IsEmpty]: Start isEmpty. Operand 268517 states and 370709 transitions. [2020-10-14 19:11:05,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-14 19:11:05,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:05,036 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:05,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 19:11:05,037 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:05,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:05,037 INFO L82 PathProgramCache]: Analyzing trace with hash 396554627, now seen corresponding path program 1 times [2020-10-14 19:11:05,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:05,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561896368] [2020-10-14 19:11:05,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:05,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:05,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:05,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:11,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:11,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-14 19:11:11,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:11:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6156 [2020-10-14 19:11:11,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:11,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:11:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:11:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 19:11:11,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:11,387 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:11,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:11,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:11,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:11,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:11,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:11:11,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:11,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:11,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:11:11,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:11,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:11,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:11,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:11,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 19:11:11,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:11,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 19:11:11,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:11,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 19:11:11,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:11,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 19:11:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:11,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:11,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:11,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:11:11,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:11,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 19:11:11,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:11,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:11,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:11,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:11,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 19:11:11,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:11,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 19:11:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:11,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:11,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:11,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 19:11:11,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:11,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 19:11:11,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:11,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-14 19:11:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:11,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 230 proven. 76 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 19:11:12,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561896368] [2020-10-14 19:11:12,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:12,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:11:12,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259373270] [2020-10-14 19:11:12,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:11:12,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:12,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:11:12,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:11:12,019 INFO L87 Difference]: Start difference. First operand 268517 states and 370709 transitions. Second operand 8 states. [2020-10-14 19:11:12,156 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:11:13,720 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:11:19,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:19,809 INFO L93 Difference]: Finished difference Result 599445 states and 828140 transitions. [2020-10-14 19:11:19,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 19:11:19,809 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 401 [2020-10-14 19:11:19,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:21,010 INFO L225 Difference]: With dead ends: 599445 [2020-10-14 19:11:21,010 INFO L226 Difference]: Without dead ends: 331806 [2020-10-14 19:11:21,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:11:21,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331806 states.