/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:09:06,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:09:06,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:09:06,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:09:06,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:09:06,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:09:06,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:09:06,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:09:06,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:09:06,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:09:06,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:09:06,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:09:06,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:09:06,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:09:06,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:09:06,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:09:06,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:09:06,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:09:06,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:09:06,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:09:06,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:09:06,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:09:06,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:09:06,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:09:06,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:09:06,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:09:06,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:09:06,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:09:06,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:09:06,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:09:06,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:09:06,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:09:06,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:09:06,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:09:06,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:09:06,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:09:06,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:09:06,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:09:06,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:09:06,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:09:06,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:09:06,282 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 [2020-10-12 14:09:06,318 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:09:06,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:09:06,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:09:06,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:09:06,320 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:09:06,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:09:06,320 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:09:06,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:09:06,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:09:06,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:09:06,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:09:06,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:09:06,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:09:06,323 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:09:06,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:09:06,324 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:09:06,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:09:06,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:09:06,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:09:06,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:09:06,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:09:06,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:09:06,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:09:06,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:09:06,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:09:06,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:09:06,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:09:06,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:09:06,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:09:06,326 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:09:06,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:09:06,663 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:09:06,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:09:06,668 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:09:06,669 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:09:06,669 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label14.c [2020-10-12 14:09:06,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36778ea2e/c25204753e2f4bd29ae64ab510bc6e91/FLAG52539b76d [2020-10-12 14:09:07,296 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:09:07,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label14.c [2020-10-12 14:09:07,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36778ea2e/c25204753e2f4bd29ae64ab510bc6e91/FLAG52539b76d [2020-10-12 14:09:07,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36778ea2e/c25204753e2f4bd29ae64ab510bc6e91 [2020-10-12 14:09:07,496 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:09:07,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:09:07,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:09:07,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:09:07,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:09:07,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:09:07" (1/1) ... [2020-10-12 14:09:07,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:09:07, skipping insertion in model container [2020-10-12 14:09:07,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:09:07" (1/1) ... [2020-10-12 14:09:07,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:09:07,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:09:08,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:09:08,561 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:09:09,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:09:09,129 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:09:09,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:09:09 WrapperNode [2020-10-12 14:09:09,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:09:09,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:09:09,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:09:09,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:09:09,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:09:09" (1/1) ... [2020-10-12 14:09:09,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:09:09" (1/1) ... [2020-10-12 14:09:09,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:09:09" (1/1) ... [2020-10-12 14:09:09,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:09:09" (1/1) ... [2020-10-12 14:09:09,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:09:09" (1/1) ... [2020-10-12 14:09:09,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:09:09" (1/1) ... [2020-10-12 14:09:09,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:09:09" (1/1) ... [2020-10-12 14:09:09,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:09:09,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:09:09,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:09:09,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:09:09,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:09:09" (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 [2020-10-12 14:09:09,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:09:09,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:09:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:09:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:09:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:09:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:09:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:09:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:09:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:09:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:09:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:09:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:09:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:09:15,383 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:09:15,384 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:09:15,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:09:15 BoogieIcfgContainer [2020-10-12 14:09:15,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:09:15,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:09:15,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:09:15,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:09:15,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:09:07" (1/3) ... [2020-10-12 14:09:15,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fecfd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:09:15, skipping insertion in model container [2020-10-12 14:09:15,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:09:09" (2/3) ... [2020-10-12 14:09:15,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fecfd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:09:15, skipping insertion in model container [2020-10-12 14:09:15,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:09:15" (3/3) ... [2020-10-12 14:09:15,401 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label14.c [2020-10-12 14:09:15,411 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:09:15,419 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:09:15,432 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:09:15,459 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:09:15,459 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:09:15,459 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:09:15,459 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:09:15,459 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:09:15,460 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:09:15,460 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:09:15,460 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:09:15,490 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-12 14:09:15,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 14:09:15,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:09:15,497 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] [2020-10-12 14:09:15,498 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:09:15,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:09:15,504 INFO L82 PathProgramCache]: Analyzing trace with hash -436791267, now seen corresponding path program 1 times [2020-10-12 14:09:15,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:09:15,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937174377] [2020-10-12 14:09:15,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:09:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:15,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:15,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:15,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 14:09:15,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:15,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-12 14:09:15,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:15,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:09:15,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:09:15,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 14:09:15,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:09:16,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:09:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:16,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:16,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:16,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:09:16,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:16,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 14:09:16,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:16,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:09:16,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:16,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:09:16,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:09:16,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937174377] [2020-10-12 14:09:16,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:09:16,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:09:16,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707795031] [2020-10-12 14:09:16,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:09:16,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:09:16,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:09:16,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:09:16,132 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-12 14:09:23,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:09:23,706 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-12 14:09:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:09:23,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-12 14:09:23,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:09:23,729 INFO L225 Difference]: With dead ends: 1224 [2020-10-12 14:09:23,729 INFO L226 Difference]: Without dead ends: 708 [2020-10-12 14:09:23,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:09:23,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-12 14:09:23,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-12 14:09:23,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-12 14:09:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-12 14:09:23,836 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 21 [2020-10-12 14:09:23,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:09:23,836 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-12 14:09:23,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:09:23,836 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-12 14:09:23,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-12 14:09:23,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:09:23,841 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 14:09:23,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:09:23,842 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:09:23,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:09:23,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1007316285, now seen corresponding path program 1 times [2020-10-12 14:09:23,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:09:23,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827753042] [2020-10-12 14:09:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:09:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:23,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:24,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:24,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:24,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:24,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 14:09:24,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:09:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-10-12 14:09:24,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:09:24,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:09:24,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 14:09:24,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:09:24,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:09:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:25,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:25,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:25,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:09:25,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:25,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 14:09:25,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:25,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:09:25,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:25,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:09:25,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:25,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:09:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:25,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:25,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:25,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:25,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 14:09:25,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:09:25,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-12 14:09:25,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:09:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:09:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 14:09:25,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 14:09:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 14:09:25,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827753042] [2020-10-12 14:09:25,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:09:25,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:09:25,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012435454] [2020-10-12 14:09:25,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:09:25,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:09:25,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:09:25,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:09:25,444 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 6 states. [2020-10-12 14:09:33,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:09:33,023 INFO L93 Difference]: Finished difference Result 1707 states and 2725 transitions. [2020-10-12 14:09:33,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 14:09:33,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-10-12 14:09:33,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:09:33,029 INFO L225 Difference]: With dead ends: 1707 [2020-10-12 14:09:33,029 INFO L226 Difference]: Without dead ends: 1019 [2020-10-12 14:09:33,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:09:33,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-10-12 14:09:33,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 1012. [2020-10-12 14:09:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1012 states. [2020-10-12 14:09:33,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1369 transitions. [2020-10-12 14:09:33,071 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1369 transitions. Word has length 91 [2020-10-12 14:09:33,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:09:33,071 INFO L479 AbstractCegarLoop]: Abstraction has 1012 states and 1369 transitions. [2020-10-12 14:09:33,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:09:33,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1369 transitions. [2020-10-12 14:09:33,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 14:09:33,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:09:33,076 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 14:09:33,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:09:33,076 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:09:33,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:09:33,077 INFO L82 PathProgramCache]: Analyzing trace with hash 369389085, now seen corresponding path program 1 times [2020-10-12 14:09:33,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:09:33,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063446614] [2020-10-12 14:09:33,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:09:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:33,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:33,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:34,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:34,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 14:09:34,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:09:34,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1085 [2020-10-12 14:09:34,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:34,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:09:34,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:09:34,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 14:09:34,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:34,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:09:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:34,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:34,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:34,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:09:34,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:34,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:09:34,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:09:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:34,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:09:34,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:34,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:09:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:34,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:34,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:34,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 14:09:34,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:34,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-12 14:09:34,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:34,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:09:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:09:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 14:09:34,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:09:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:09:34,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063446614] [2020-10-12 14:09:34,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:09:34,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:09:34,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026712487] [2020-10-12 14:09:34,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:09:34,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:09:34,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:09:34,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:09:34,714 INFO L87 Difference]: Start difference. First operand 1012 states and 1369 transitions. Second operand 7 states. [2020-10-12 14:09:46,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:09:46,338 INFO L93 Difference]: Finished difference Result 2380 states and 3367 transitions. [2020-10-12 14:09:46,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:09:46,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-12 14:09:46,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:09:46,347 INFO L225 Difference]: With dead ends: 2380 [2020-10-12 14:09:46,347 INFO L226 Difference]: Without dead ends: 1681 [2020-10-12 14:09:46,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:09:46,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2020-10-12 14:09:46,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1331. [2020-10-12 14:09:46,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2020-10-12 14:09:46,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1721 transitions. [2020-10-12 14:09:46,392 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1721 transitions. Word has length 104 [2020-10-12 14:09:46,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:09:46,392 INFO L479 AbstractCegarLoop]: Abstraction has 1331 states and 1721 transitions. [2020-10-12 14:09:46,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:09:46,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1721 transitions. [2020-10-12 14:09:46,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-12 14:09:46,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:09:46,397 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:09:46,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:09:46,397 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:09:46,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:09:46,398 INFO L82 PathProgramCache]: Analyzing trace with hash 807940416, now seen corresponding path program 1 times [2020-10-12 14:09:46,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:09:46,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597296750] [2020-10-12 14:09:46,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:09:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:46,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:46,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:47,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:49,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:49,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-12 14:09:49,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:09:49,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2557 [2020-10-12 14:09:49,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:09:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:09:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 225 [2020-10-12 14:09:49,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:49,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:09:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:49,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:49,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:49,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:09:49,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:49,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:09:49,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:09:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:09:49,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:49,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:09:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:49,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:49,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:49,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:09:49,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:49,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-12 14:09:49,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:49,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:09:49,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:09:49,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:09:49,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:09:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 14:09:49,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597296750] [2020-10-12 14:09:49,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:09:49,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:09:49,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434728307] [2020-10-12 14:09:49,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:09:49,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:09:49,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:09:49,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:09:49,731 INFO L87 Difference]: Start difference. First operand 1331 states and 1721 transitions. Second operand 6 states. [2020-10-12 14:09:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:09:57,986 INFO L93 Difference]: Finished difference Result 3306 states and 4402 transitions. [2020-10-12 14:09:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:09:57,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 221 [2020-10-12 14:09:57,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:09:58,000 INFO L225 Difference]: With dead ends: 3306 [2020-10-12 14:09:58,000 INFO L226 Difference]: Without dead ends: 2604 [2020-10-12 14:09:58,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:09:58,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2020-10-12 14:09:58,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2581. [2020-10-12 14:09:58,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2581 states. [2020-10-12 14:09:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2581 states to 2581 states and 3124 transitions. [2020-10-12 14:09:58,067 INFO L78 Accepts]: Start accepts. Automaton has 2581 states and 3124 transitions. Word has length 221 [2020-10-12 14:09:58,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:09:58,067 INFO L479 AbstractCegarLoop]: Abstraction has 2581 states and 3124 transitions. [2020-10-12 14:09:58,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:09:58,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2581 states and 3124 transitions. [2020-10-12 14:09:58,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-12 14:09:58,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:09:58,074 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:09:58,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:09:58,075 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:09:58,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:09:58,075 INFO L82 PathProgramCache]: Analyzing trace with hash -666228620, now seen corresponding path program 1 times [2020-10-12 14:09:58,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:09:58,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190858548] [2020-10-12 14:09:58,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:09:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:58,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:58,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:58,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:03,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:03,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-12 14:10:03,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:10:03,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 14:10:03,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:03,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:10:03,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:10:03,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-12 14:10:03,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:03,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:10:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:03,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:03,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:03,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:10:03,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:03,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:10:03,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:03,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:10:03,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:03,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:10:03,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:03,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:10:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:03,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:03,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:10:03,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:03,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-12 14:10:03,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:10:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:10:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:10:03,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:04,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-12 14:10:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:04,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:04,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:04,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:10:04,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:04,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 14:10:04,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:04,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:04,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 14:10:04,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:04,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 14:10:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 14:10:04,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190858548] [2020-10-12 14:10:04,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:10:04,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:10:04,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702048758] [2020-10-12 14:10:04,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:10:04,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:10:04,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:10:04,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:10:04,714 INFO L87 Difference]: Start difference. First operand 2581 states and 3124 transitions. Second operand 7 states. [2020-10-12 14:10:11,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:10:11,347 INFO L93 Difference]: Finished difference Result 4938 states and 6106 transitions. [2020-10-12 14:10:11,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:10:11,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2020-10-12 14:10:11,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:10:11,365 INFO L225 Difference]: With dead ends: 4938 [2020-10-12 14:10:11,365 INFO L226 Difference]: Without dead ends: 2670 [2020-10-12 14:10:11,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:10:11,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2020-10-12 14:10:11,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 2586. [2020-10-12 14:10:11,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2586 states. [2020-10-12 14:10:11,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 3127 transitions. [2020-10-12 14:10:11,455 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 3127 transitions. Word has length 301 [2020-10-12 14:10:11,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:10:11,456 INFO L479 AbstractCegarLoop]: Abstraction has 2586 states and 3127 transitions. [2020-10-12 14:10:11,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:10:11,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 3127 transitions. [2020-10-12 14:10:11,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-12 14:10:11,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:10:11,462 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:10:11,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:10:11,462 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:10:11,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:10:11,463 INFO L82 PathProgramCache]: Analyzing trace with hash 171643455, now seen corresponding path program 1 times [2020-10-12 14:10:11,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:10:11,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710133475] [2020-10-12 14:10:11,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:10:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:11,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:11,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:12,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:14,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:14,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-12 14:10:14,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:10:14,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2532 [2020-10-12 14:10:14,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 14:10:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:10:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 322 [2020-10-12 14:10:14,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:14,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:10:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:14,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:14,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:14,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:10:14,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:14,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:10:14,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:14,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:10:14,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:14,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:10:14,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:14,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:10:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:14,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:14,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:14,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:14,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:10:14,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:10:14,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-12 14:10:14,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:14,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:10:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:10:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 14:10:14,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:14,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 14:10:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:14,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:14,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:15,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:15,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:10:15,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:10:15,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-10-12 14:10:15,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:15,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:10:15,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:10:15,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:10:15,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:16,422 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 9 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 14:10:16,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710133475] [2020-10-12 14:10:16,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:10:16,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 14:10:16,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713367952] [2020-10-12 14:10:16,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 14:10:16,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:10:16,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 14:10:16,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:10:16,426 INFO L87 Difference]: Start difference. First operand 2586 states and 3127 transitions. Second operand 12 states. [2020-10-12 14:10:33,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:10:33,625 INFO L93 Difference]: Finished difference Result 3199 states and 4102 transitions. [2020-10-12 14:10:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 14:10:33,627 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 316 [2020-10-12 14:10:33,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:10:33,643 INFO L225 Difference]: With dead ends: 3199 [2020-10-12 14:10:33,644 INFO L226 Difference]: Without dead ends: 3197 [2020-10-12 14:10:33,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 14:10:33,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2020-10-12 14:10:33,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 2913. [2020-10-12 14:10:33,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2913 states. [2020-10-12 14:10:33,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 3714 transitions. [2020-10-12 14:10:33,729 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 3714 transitions. Word has length 316 [2020-10-12 14:10:33,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:10:33,729 INFO L479 AbstractCegarLoop]: Abstraction has 2913 states and 3714 transitions. [2020-10-12 14:10:33,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 14:10:33,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 3714 transitions. [2020-10-12 14:10:33,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-12 14:10:33,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:10:33,739 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:10:33,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:10:33,739 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:10:33,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:10:33,740 INFO L82 PathProgramCache]: Analyzing trace with hash -853880384, now seen corresponding path program 1 times [2020-10-12 14:10:33,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:10:33,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83551821] [2020-10-12 14:10:33,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:10:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:33,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:34,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:35,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:35,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:35,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-12 14:10:35,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:10:35,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2030 [2020-10-12 14:10:35,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:35,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:10:35,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:10:35,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 14:10:35,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:35,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:10:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:35,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:35,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:35,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:10:35,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:35,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:10:35,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:35,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:35,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:36,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:10:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:36,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:36,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:36,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:10:36,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:36,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-12 14:10:36,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:36,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:10:36,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:36,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:10:36,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:36,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:10:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:36,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:36,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:36,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:36,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:10:36,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:10:36,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-12 14:10:36,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:10:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:10:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 14:10:36,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 119 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 14:10:36,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83551821] [2020-10-12 14:10:36,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:10:36,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:10:36,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871969775] [2020-10-12 14:10:36,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:10:36,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:10:36,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:10:36,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:10:36,837 INFO L87 Difference]: Start difference. First operand 2913 states and 3714 transitions. Second operand 7 states. [2020-10-12 14:10:48,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:10:48,884 INFO L93 Difference]: Finished difference Result 8676 states and 11888 transitions. [2020-10-12 14:10:48,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:10:48,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 405 [2020-10-12 14:10:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:10:48,919 INFO L225 Difference]: With dead ends: 8676 [2020-10-12 14:10:48,919 INFO L226 Difference]: Without dead ends: 6076 [2020-10-12 14:10:48,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:10:48,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6076 states. [2020-10-12 14:10:49,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6076 to 6053. [2020-10-12 14:10:49,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6053 states. [2020-10-12 14:10:49,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6053 states to 6053 states and 7883 transitions. [2020-10-12 14:10:49,094 INFO L78 Accepts]: Start accepts. Automaton has 6053 states and 7883 transitions. Word has length 405 [2020-10-12 14:10:49,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:10:49,095 INFO L479 AbstractCegarLoop]: Abstraction has 6053 states and 7883 transitions. [2020-10-12 14:10:49,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:10:49,095 INFO L276 IsEmpty]: Start isEmpty. Operand 6053 states and 7883 transitions. [2020-10-12 14:10:49,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-12 14:10:49,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:10:49,108 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:10:49,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:10:49,109 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:10:49,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:10:49,109 INFO L82 PathProgramCache]: Analyzing trace with hash 526402226, now seen corresponding path program 1 times [2020-10-12 14:10:49,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:10:49,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198605588] [2020-10-12 14:10:49,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:10:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:49,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:49,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:49,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:50,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:52,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:52,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:54,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:54,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 510 [2020-10-12 14:10:54,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:10:54,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-12 14:10:54,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:10:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-12 14:10:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-12 14:10:54,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:10:54,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:10:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:54,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:54,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:54,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:10:54,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:54,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:10:54,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:54,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:54,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:10:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:54,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:54,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:54,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:10:54,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:54,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 14:10:54,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:10:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 14:10:54,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:54,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 14:10:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:54,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:54,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:54,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:54,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:10:54,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:10:54,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-12 14:10:54,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:54,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:10:54,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:10:54,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:10:54,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:54,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-12 14:10:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:54,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:55,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:55,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:10:55,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:55,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 14:10:55,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:55,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:10:55,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:10:55,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:10:55,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:55,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-12 14:10:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:55,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:55,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:55,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 14:10:55,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:55,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 14:10:55,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:55,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:55,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 14:10:55,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:55,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 306 proven. 174 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-12 14:10:55,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198605588] [2020-10-12 14:10:55,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:10:55,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:10:55,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050800426] [2020-10-12 14:10:55,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:10:55,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:10:55,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:10:55,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:10:55,317 INFO L87 Difference]: Start difference. First operand 6053 states and 7883 transitions. Second operand 8 states. [2020-10-12 14:11:07,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:11:07,087 INFO L93 Difference]: Finished difference Result 13511 states and 19356 transitions. [2020-10-12 14:11:07,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 14:11:07,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 494 [2020-10-12 14:11:07,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:11:07,144 INFO L225 Difference]: With dead ends: 13511 [2020-10-12 14:11:07,145 INFO L226 Difference]: Without dead ends: 8386 [2020-10-12 14:11:07,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-12 14:11:07,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8386 states. [2020-10-12 14:11:07,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8386 to 7378. [2020-10-12 14:11:07,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7378 states. [2020-10-12 14:11:07,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7378 states to 7378 states and 9287 transitions. [2020-10-12 14:11:07,419 INFO L78 Accepts]: Start accepts. Automaton has 7378 states and 9287 transitions. Word has length 494 [2020-10-12 14:11:07,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:11:07,419 INFO L479 AbstractCegarLoop]: Abstraction has 7378 states and 9287 transitions. [2020-10-12 14:11:07,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:11:07,420 INFO L276 IsEmpty]: Start isEmpty. Operand 7378 states and 9287 transitions. [2020-10-12 14:11:07,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2020-10-12 14:11:07,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:11:07,434 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:11:07,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:11:07,434 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:11:07,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:11:07,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1824934760, now seen corresponding path program 1 times [2020-10-12 14:11:07,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:11:07,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66854462] [2020-10-12 14:11:07,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:11:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:07,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:07,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:09,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:09,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:12,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:12,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 519 [2020-10-12 14:11:12,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:11:12,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4820 [2020-10-12 14:11:12,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:12,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:11:12,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-12 14:11:12,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 14:11:12,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:12,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:11:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:12,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:12,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:12,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:11:12,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:12,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:11:12,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:12,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:11:12,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:12,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:11:12,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:12,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:11:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:12,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:12,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:12,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:11:12,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:12,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 14:11:12,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:12,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:11:12,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:12,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:11:12,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:12,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:11:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:12,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:12,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:12,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:11:12,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:12,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-12 14:11:12,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:11:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:11:12,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:12,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:11:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:12,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:12,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:12,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:12,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 14:11:12,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:11:12,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 14:11:12,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:11:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:11:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 14:11:12,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 218 proven. 15 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-12 14:11:13,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66854462] [2020-10-12 14:11:13,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:11:13,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:11:13,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468090040] [2020-10-12 14:11:13,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:11:13,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:11:13,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:11:13,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:11:13,161 INFO L87 Difference]: Start difference. First operand 7378 states and 9287 transitions. Second operand 6 states. [2020-10-12 14:11:20,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:11:20,089 INFO L93 Difference]: Finished difference Result 13529 states and 17936 transitions. [2020-10-12 14:11:20,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:11:20,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 505 [2020-10-12 14:11:20,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:11:20,117 INFO L225 Difference]: With dead ends: 13529 [2020-10-12 14:11:20,117 INFO L226 Difference]: Without dead ends: 8641 [2020-10-12 14:11:20,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:11:20,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8641 states. [2020-10-12 14:11:20,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8641 to 8009. [2020-10-12 14:11:20,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8009 states. [2020-10-12 14:11:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8009 states to 8009 states and 10104 transitions. [2020-10-12 14:11:20,291 INFO L78 Accepts]: Start accepts. Automaton has 8009 states and 10104 transitions. Word has length 505 [2020-10-12 14:11:20,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:11:20,292 INFO L479 AbstractCegarLoop]: Abstraction has 8009 states and 10104 transitions. [2020-10-12 14:11:20,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:11:20,292 INFO L276 IsEmpty]: Start isEmpty. Operand 8009 states and 10104 transitions. [2020-10-12 14:11:20,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2020-10-12 14:11:20,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:11:20,306 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-12 14:11:20,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:11:20,306 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:11:20,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:11:20,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1439069543, now seen corresponding path program 1 times [2020-10-12 14:11:20,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:11:20,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758048122] [2020-10-12 14:11:20,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:11:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:20,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:20,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:21,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:24,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:25,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:25,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:25,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 619 [2020-10-12 14:11:25,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:11:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 14:11:25,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:11:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 496 [2020-10-12 14:11:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 14:11:25,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:25,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:11:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:25,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:25,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:25,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:11:25,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:25,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:11:25,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:25,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:11:25,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:25,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:11:25,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:25,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:11:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:25,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:25,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:25,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:11:25,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:25,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 14:11:25,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:25,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:11:25,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:11:25,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:25,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:11:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:25,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:25,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:25,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:11:25,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:25,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 14:11:25,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:25,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:11:25,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:25,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:11:25,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:25,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:11:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:25,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:25,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:25,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 14:11:25,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:25,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 14:11:25,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 14:11:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-12 14:11:25,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:25,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2020-10-12 14:11:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:25,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:26,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:26,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:26,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 14:11:26,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:11:26,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-12 14:11:26,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:11:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:11:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 14:11:26,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 350 proven. 2 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2020-10-12 14:11:27,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758048122] [2020-10-12 14:11:27,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:11:27,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 14:11:27,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586883713] [2020-10-12 14:11:27,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 14:11:27,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:11:27,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 14:11:27,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:11:27,139 INFO L87 Difference]: Start difference. First operand 8009 states and 10104 transitions. Second operand 11 states. [2020-10-12 14:11:27,654 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-12 14:11:27,788 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-12 14:11:30,257 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-12 14:11:30,873 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-10-12 14:11:31,818 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-10-12 14:11:31,972 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-12 14:11:32,240 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-12 14:11:33,175 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-12 14:11:33,424 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2020-10-12 14:11:34,880 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-10-12 14:11:44,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:11:44,584 INFO L93 Difference]: Finished difference Result 16807 states and 21854 transitions. [2020-10-12 14:11:44,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 14:11:44,587 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 603 [2020-10-12 14:11:44,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:11:44,616 INFO L225 Difference]: With dead ends: 16807 [2020-10-12 14:11:44,616 INFO L226 Difference]: Without dead ends: 9369 [2020-10-12 14:11:44,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2020-10-12 14:11:44,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9369 states. [2020-10-12 14:11:44,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9369 to 9263. [2020-10-12 14:11:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9263 states. [2020-10-12 14:11:44,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9263 states to 9263 states and 11657 transitions. [2020-10-12 14:11:44,819 INFO L78 Accepts]: Start accepts. Automaton has 9263 states and 11657 transitions. Word has length 603 [2020-10-12 14:11:44,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:11:44,821 INFO L479 AbstractCegarLoop]: Abstraction has 9263 states and 11657 transitions. [2020-10-12 14:11:44,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 14:11:44,821 INFO L276 IsEmpty]: Start isEmpty. Operand 9263 states and 11657 transitions. [2020-10-12 14:11:44,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2020-10-12 14:11:44,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:11:44,839 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:11:44,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:11:44,839 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:11:44,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:11:44,840 INFO L82 PathProgramCache]: Analyzing trace with hash 351094993, now seen corresponding path program 1 times [2020-10-12 14:11:44,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:11:44,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073797135] [2020-10-12 14:11:44,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:11:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:45,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:45,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:46,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:47,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:49,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:50,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:50,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 620 [2020-10-12 14:11:50,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:11:50,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 14:11:50,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:11:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-12 14:11:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-12 14:11:50,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:50,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:11:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:50,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:50,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:50,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:11:50,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:50,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:11:50,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:50,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:11:50,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:50,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:11:50,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:50,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:11:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:50,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:50,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:11:50,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 14:11:50,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:11:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:11:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:50,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:11:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:50,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:50,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:50,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:11:50,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:11:50,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 14:11:50,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:11:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:11:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:11:50,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:50,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:11:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:11:50,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:50,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:11:50,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:11:50,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:11:50,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:11:50,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-12 14:11:50,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:11:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:11:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:11:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:11:50,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:11:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 333 proven. 15 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-12 14:11:50,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073797135] [2020-10-12 14:11:50,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:11:50,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:11:50,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564912375] [2020-10-12 14:11:50,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:11:50,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:11:50,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:11:50,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:11:50,881 INFO L87 Difference]: Start difference. First operand 9263 states and 11657 transitions. Second operand 6 states. [2020-10-12 14:12:00,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:12:00,103 INFO L93 Difference]: Finished difference Result 20828 states and 27640 transitions. [2020-10-12 14:12:00,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:12:00,105 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 606 [2020-10-12 14:12:00,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:12:00,148 INFO L225 Difference]: With dead ends: 20828 [2020-10-12 14:12:00,148 INFO L226 Difference]: Without dead ends: 14055 [2020-10-12 14:12:00,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:12:00,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14055 states. [2020-10-12 14:12:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14055 to 14036. [2020-10-12 14:12:00,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14036 states. [2020-10-12 14:12:00,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14036 states to 14036 states and 18243 transitions. [2020-10-12 14:12:00,430 INFO L78 Accepts]: Start accepts. Automaton has 14036 states and 18243 transitions. Word has length 606 [2020-10-12 14:12:00,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:12:00,431 INFO L479 AbstractCegarLoop]: Abstraction has 14036 states and 18243 transitions. [2020-10-12 14:12:00,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:12:00,431 INFO L276 IsEmpty]: Start isEmpty. Operand 14036 states and 18243 transitions. [2020-10-12 14:12:00,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2020-10-12 14:12:00,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:12:00,451 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:12:00,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 14:12:00,451 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:12:00,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:12:00,452 INFO L82 PathProgramCache]: Analyzing trace with hash -2080452774, now seen corresponding path program 1 times [2020-10-12 14:12:00,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:12:00,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185677002] [2020-10-12 14:12:00,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:12:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:00,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:00,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:02,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:02,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:05,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:05,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 641 [2020-10-12 14:12:05,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:12:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-12 14:12:05,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:12:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 518 [2020-10-12 14:12:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 14:12:05,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:05,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:12:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:05,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:05,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:05,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:12:05,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:05,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:12:05,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:12:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:12:05,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:05,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:12:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:05,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:05,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:05,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:12:05,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:05,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 14:12:05,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:05,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:12:05,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:05,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:12:05,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:05,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:12:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:05,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:05,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:05,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:12:05,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:05,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 14:12:05,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:12:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:12:05,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:05,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:12:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:06,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:06,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:06,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 14:12:06,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:06,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 14:12:06,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:06,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 14:12:06,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:06,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-12 14:12:06,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:06,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2020-10-12 14:12:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:06,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:06,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:06,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 14:12:06,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:06,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 14:12:06,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:12:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:12:06,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 14:12:06,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-10-12 14:12:06,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185677002] [2020-10-12 14:12:06,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:12:06,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:12:06,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995724898] [2020-10-12 14:12:06,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:12:06,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:12:06,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:12:06,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:12:06,492 INFO L87 Difference]: Start difference. First operand 14036 states and 18243 transitions. Second operand 8 states. [2020-10-12 14:12:21,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:12:21,493 INFO L93 Difference]: Finished difference Result 31214 states and 41821 transitions. [2020-10-12 14:12:21,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 14:12:21,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 625 [2020-10-12 14:12:21,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:12:21,545 INFO L225 Difference]: With dead ends: 31214 [2020-10-12 14:12:21,546 INFO L226 Difference]: Without dead ends: 17779 [2020-10-12 14:12:21,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-12 14:12:21,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17779 states. [2020-10-12 14:12:21,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17779 to 16531. [2020-10-12 14:12:21,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16531 states. [2020-10-12 14:12:21,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16531 states to 16531 states and 20422 transitions. [2020-10-12 14:12:21,897 INFO L78 Accepts]: Start accepts. Automaton has 16531 states and 20422 transitions. Word has length 625 [2020-10-12 14:12:21,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:12:21,898 INFO L479 AbstractCegarLoop]: Abstraction has 16531 states and 20422 transitions. [2020-10-12 14:12:21,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:12:21,899 INFO L276 IsEmpty]: Start isEmpty. Operand 16531 states and 20422 transitions. [2020-10-12 14:12:21,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2020-10-12 14:12:21,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:12:21,918 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:12:21,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 14:12:21,919 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:12:21,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:12:21,919 INFO L82 PathProgramCache]: Analyzing trace with hash 253643950, now seen corresponding path program 1 times [2020-10-12 14:12:21,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:12:21,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780513649] [2020-10-12 14:12:21,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:12:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:22,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:22,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:22,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:25,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:27,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:27,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 644 [2020-10-12 14:12:27,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:12:27,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 14:12:27,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:12:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-12 14:12:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 14:12:27,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:27,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:12:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:27,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:27,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:27,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:12:27,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:27,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:12:27,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:27,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:12:27,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:27,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:12:27,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:27,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:12:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:27,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:27,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:27,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:12:27,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:27,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 14:12:27,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:27,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:12:27,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:27,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:12:27,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:27,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:12:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:27,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:27,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:27,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:12:27,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:27,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 14:12:27,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:27,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:12:27,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:27,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:12:27,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:27,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:12:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:27,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:27,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:27,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:27,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 14:12:27,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:12:27,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 14:12:27,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:27,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:12:27,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:12:27,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 14:12:27,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:28,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-12 14:12:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:28,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:28,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:28,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:28,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 14:12:28,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:12:28,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-12 14:12:28,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:28,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:12:28,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:12:28,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 14:12:28,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 528 proven. 53 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-12 14:12:29,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780513649] [2020-10-12 14:12:29,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:12:29,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 14:12:29,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392760081] [2020-10-12 14:12:29,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 14:12:29,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:12:29,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 14:12:29,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:12:29,090 INFO L87 Difference]: Start difference. First operand 16531 states and 20422 transitions. Second operand 9 states. [2020-10-12 14:12:32,886 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-12 14:12:45,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:12:45,036 INFO L93 Difference]: Finished difference Result 37229 states and 47407 transitions. [2020-10-12 14:12:45,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:12:45,038 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 628 [2020-10-12 14:12:45,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:12:45,104 INFO L225 Difference]: With dead ends: 37229 [2020-10-12 14:12:45,104 INFO L226 Difference]: Without dead ends: 22867 [2020-10-12 14:12:45,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-12 14:12:45,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22867 states. [2020-10-12 14:12:45,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22867 to 22492. [2020-10-12 14:12:45,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22492 states. [2020-10-12 14:12:45,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22492 states to 22492 states and 27580 transitions. [2020-10-12 14:12:45,534 INFO L78 Accepts]: Start accepts. Automaton has 22492 states and 27580 transitions. Word has length 628 [2020-10-12 14:12:45,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:12:45,535 INFO L479 AbstractCegarLoop]: Abstraction has 22492 states and 27580 transitions. [2020-10-12 14:12:45,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 14:12:45,535 INFO L276 IsEmpty]: Start isEmpty. Operand 22492 states and 27580 transitions. [2020-10-12 14:12:45,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2020-10-12 14:12:45,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:12:45,553 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:12:45,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 14:12:45,553 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:12:45,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:12:45,554 INFO L82 PathProgramCache]: Analyzing trace with hash 786144168, now seen corresponding path program 1 times [2020-10-12 14:12:45,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:12:45,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887553196] [2020-10-12 14:12:45,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:12:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:45,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:45,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:46,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:50,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:50,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:50,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 658 [2020-10-12 14:12:50,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:12:50,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 14:12:50,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:50,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:12:50,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 481 [2020-10-12 14:12:50,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 14:12:50,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:50,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:12:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:50,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:50,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:12:50,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:50,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:12:50,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:12:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:12:50,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:50,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:12:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:50,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:50,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:50,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:12:50,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:50,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 14:12:50,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:12:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:12:50,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:50,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:12:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:50,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:51,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:51,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:12:51,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:51,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 14:12:51,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:51,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:12:51,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:51,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:12:51,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:51,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:12:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:51,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:51,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:51,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 14:12:51,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:51,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 14:12:51,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:51,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:12:51,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:51,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 14:12:51,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:51,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-10-12 14:12:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:51,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:51,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:51,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:51,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 14:12:51,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:12:51,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-12 14:12:51,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:51,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:12:51,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:12:51,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-12 14:12:51,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 404 proven. 2 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2020-10-12 14:12:51,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887553196] [2020-10-12 14:12:51,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:12:51,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:12:51,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268713227] [2020-10-12 14:12:51,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:12:51,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:12:51,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:12:51,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:12:51,697 INFO L87 Difference]: Start difference. First operand 22492 states and 27580 transitions. Second operand 7 states.