/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=NARROWEST --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/Problem18_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:45:55,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:45:55,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:45:55,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:45:55,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:45:55,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:45:55,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:45:55,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:45:55,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:45:55,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:45:55,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:45:55,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:45:55,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:45:55,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:45:55,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:45:55,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:45:55,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:45:55,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:45:55,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:45:55,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:45:55,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:45:55,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:45:55,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:45:55,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:45:55,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:45:55,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:45:55,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:45:55,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:45:55,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:45:55,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:45:55,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:45:55,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:45:55,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:45:55,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:45:55,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:45:55,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:45:55,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:45:55,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:45:55,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:45:55,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:45:55,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:45:55,427 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 [2020-10-13 09:45:55,480 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:45:55,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:45:55,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:45:55,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:45:55,484 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:45:55,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:45:55,485 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:45:55,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:45:55,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:45:55,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:45:55,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:45:55,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:45:55,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:45:55,487 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:45:55,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:45:55,488 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:45:55,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:45:55,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:45:55,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:45:55,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:45:55,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:45:55,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:45:55,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:45:55,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:45:55,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:45:55,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:45:55,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:45:55,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:45:55,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:45:55,490 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:45:55,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:45:55,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:45:55,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:45:55,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:45:55,813 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:45:55,813 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label12.c [2020-10-13 09:45:55,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4321f8050/5d8eccc311734866ad5b68df1bda2692/FLAG1092cd5f3 [2020-10-13 09:45:56,674 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:45:56,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label12.c [2020-10-13 09:45:56,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4321f8050/5d8eccc311734866ad5b68df1bda2692/FLAG1092cd5f3 [2020-10-13 09:45:56,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4321f8050/5d8eccc311734866ad5b68df1bda2692 [2020-10-13 09:45:56,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:45:56,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:45:56,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:45:56,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:45:56,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:45:56,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:45:56" (1/1) ... [2020-10-13 09:45:56,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f05bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:56, skipping insertion in model container [2020-10-13 09:45:56,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:45:56" (1/1) ... [2020-10-13 09:45:56,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:45:56,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:45:58,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:45:58,262 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:45:58,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:45:58,803 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:45:58,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:58 WrapperNode [2020-10-13 09:45:58,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:45:58,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:45:58,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:45:58,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:45:58,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:58" (1/1) ... [2020-10-13 09:45:58,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:58" (1/1) ... [2020-10-13 09:45:58,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:58" (1/1) ... [2020-10-13 09:45:58,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:58" (1/1) ... [2020-10-13 09:45:58,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:58" (1/1) ... [2020-10-13 09:45:59,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:58" (1/1) ... [2020-10-13 09:45:59,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:58" (1/1) ... [2020-10-13 09:45:59,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:45:59,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:45:59,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:45:59,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:45:59,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:58" (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 [2020-10-13 09:45:59,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:45:59,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:45:59,172 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:45:59,172 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:45:59,172 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:45:59,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:45:59,173 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:45:59,174 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:45:59,174 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:45:59,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:45:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:45:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:45:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:45:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:45:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:46:05,171 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:46:05,172 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:46:05,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:46:05 BoogieIcfgContainer [2020-10-13 09:46:05,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:46:05,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:46:05,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:46:05,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:46:05,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:45:56" (1/3) ... [2020-10-13 09:46:05,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73560c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:46:05, skipping insertion in model container [2020-10-13 09:46:05,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:45:58" (2/3) ... [2020-10-13 09:46:05,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73560c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:46:05, skipping insertion in model container [2020-10-13 09:46:05,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:46:05" (3/3) ... [2020-10-13 09:46:05,196 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label12.c [2020-10-13 09:46:05,208 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:46:05,218 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:46:05,235 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:46:05,334 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:46:05,334 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:46:05,334 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:46:05,334 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:46:05,335 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:46:05,335 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:46:05,335 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:46:05,335 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:46:05,373 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:46:05,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 09:46:05,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:05,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:46:05,382 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:05,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:05,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1916525318, now seen corresponding path program 1 times [2020-10-13 09:46:05,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:05,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588775750] [2020-10-13 09:46:05,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:05,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:05,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:05,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 09:46:05,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:05,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-13 09:46:05,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:05,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:46:05,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:46:05,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:46:05,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:46:05,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:05,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:05,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:05,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:05,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:05,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:46:05,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:05,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:05,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:05,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:46:05,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:05,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588775750] [2020-10-13 09:46:05,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:46:05,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:46:05,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617938081] [2020-10-13 09:46:05,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:46:05,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:05,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:46:05,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:46:05,995 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-13 09:46:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:13,501 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-13 09:46:13,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:46:13,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-13 09:46:13,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:13,536 INFO L225 Difference]: With dead ends: 2270 [2020-10-13 09:46:13,537 INFO L226 Difference]: Without dead ends: 1432 [2020-10-13 09:46:13,546 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 [2020-10-13 09:46:13,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-13 09:46:13,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-13 09:46:13,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-13 09:46:13,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-13 09:46:13,702 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 23 [2020-10-13 09:46:13,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:13,703 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-13 09:46:13,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:46:13,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-13 09:46:13,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 09:46:13,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:13,708 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:46:13,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:46:13,709 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:13,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:13,710 INFO L82 PathProgramCache]: Analyzing trace with hash 2140535966, now seen corresponding path program 1 times [2020-10-13 09:46:13,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:13,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611872245] [2020-10-13 09:46:13,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:13,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:13,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:14,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:14,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 09:46:14,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:46:14,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-10-13 09:46:14,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:46:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:46:14,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:46:14,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:14,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:14,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:14,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:14,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:14,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:46:14,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:14,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:14,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:14,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:14,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:14,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:14,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:14,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:14,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:46:14,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:14,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:46:14,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:14,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:14,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:14,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:46:14,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:14,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611872245] [2020-10-13 09:46:14,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:14,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:46:14,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395553144] [2020-10-13 09:46:14,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:46:14,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:14,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:46:14,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:46:14,560 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 6 states. [2020-10-13 09:46:26,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:26,911 INFO L93 Difference]: Finished difference Result 5696 states and 9019 transitions. [2020-10-13 09:46:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:46:26,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-13 09:46:26,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:26,940 INFO L225 Difference]: With dead ends: 5696 [2020-10-13 09:46:26,940 INFO L226 Difference]: Without dead ends: 4277 [2020-10-13 09:46:26,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:46:26,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2020-10-13 09:46:27,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 4273. [2020-10-13 09:46:27,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4273 states. [2020-10-13 09:46:27,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4273 states to 4273 states and 6252 transitions. [2020-10-13 09:46:27,072 INFO L78 Accepts]: Start accepts. Automaton has 4273 states and 6252 transitions. Word has length 93 [2020-10-13 09:46:27,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:27,073 INFO L479 AbstractCegarLoop]: Abstraction has 4273 states and 6252 transitions. [2020-10-13 09:46:27,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:46:27,073 INFO L276 IsEmpty]: Start isEmpty. Operand 4273 states and 6252 transitions. [2020-10-13 09:46:27,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 09:46:27,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:27,077 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:46:27,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:46:27,078 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:27,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:27,078 INFO L82 PathProgramCache]: Analyzing trace with hash -234642970, now seen corresponding path program 1 times [2020-10-13 09:46:27,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:27,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571055399] [2020-10-13 09:46:27,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:27,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:27,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:27,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:27,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:46:27,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:46:27,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-13 09:46:27,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:27,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:27,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:46:27,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:46:27,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:27,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:27,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:27,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:27,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:27,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:27,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:46:27,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:27,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:27,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:27,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:27,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:27,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:28,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:28,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:46:28,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:28,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-13 09:46:28,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:28,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:28,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:28,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:46:28,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:28,091 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:28,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571055399] [2020-10-13 09:46:28,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:28,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:46:28,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211515885] [2020-10-13 09:46:28,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:46:28,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:28,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:46:28,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:46:28,094 INFO L87 Difference]: Start difference. First operand 4273 states and 6252 transitions. Second operand 5 states. [2020-10-13 09:46:36,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:36,952 INFO L93 Difference]: Finished difference Result 12804 states and 18975 transitions. [2020-10-13 09:46:36,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:46:36,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-13 09:46:36,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:37,001 INFO L225 Difference]: With dead ends: 12804 [2020-10-13 09:46:37,001 INFO L226 Difference]: Without dead ends: 8537 [2020-10-13 09:46:37,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:46:37,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8537 states. [2020-10-13 09:46:37,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8537 to 7831. [2020-10-13 09:46:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7831 states. [2020-10-13 09:46:37,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7831 states to 7831 states and 10592 transitions. [2020-10-13 09:46:37,242 INFO L78 Accepts]: Start accepts. Automaton has 7831 states and 10592 transitions. Word has length 97 [2020-10-13 09:46:37,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:37,244 INFO L479 AbstractCegarLoop]: Abstraction has 7831 states and 10592 transitions. [2020-10-13 09:46:37,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:46:37,245 INFO L276 IsEmpty]: Start isEmpty. Operand 7831 states and 10592 transitions. [2020-10-13 09:46:37,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 09:46:37,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:37,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:46:37,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:46:37,258 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:37,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:37,259 INFO L82 PathProgramCache]: Analyzing trace with hash -819711902, now seen corresponding path program 1 times [2020-10-13 09:46:37,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:37,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665720507] [2020-10-13 09:46:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:37,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:37,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:37,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:38,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:38,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 09:46:38,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:46:38,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 919 [2020-10-13 09:46:38,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:46:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:46:38,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:38,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:38,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:38,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:38,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:38,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:38,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:46:38,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:38,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:46:38,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:38,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:38,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:38,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:46:38,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:38,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 09:46:38,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:46:38,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:38,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:38,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665720507] [2020-10-13 09:46:38,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:38,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:46:38,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606698939] [2020-10-13 09:46:38,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:46:38,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:38,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:46:38,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:46:38,585 INFO L87 Difference]: Start difference. First operand 7831 states and 10592 transitions. Second operand 5 states. [2020-10-13 09:46:44,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:44,551 INFO L93 Difference]: Finished difference Result 15678 states and 21239 transitions. [2020-10-13 09:46:44,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:46:44,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-13 09:46:44,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:44,594 INFO L225 Difference]: With dead ends: 15678 [2020-10-13 09:46:44,595 INFO L226 Difference]: Without dead ends: 7835 [2020-10-13 09:46:44,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:46:44,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7835 states. [2020-10-13 09:46:44,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7835 to 7831. [2020-10-13 09:46:44,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7831 states. [2020-10-13 09:46:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7831 states to 7831 states and 10581 transitions. [2020-10-13 09:46:44,798 INFO L78 Accepts]: Start accepts. Automaton has 7831 states and 10581 transitions. Word has length 111 [2020-10-13 09:46:44,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:44,800 INFO L479 AbstractCegarLoop]: Abstraction has 7831 states and 10581 transitions. [2020-10-13 09:46:44,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:46:44,800 INFO L276 IsEmpty]: Start isEmpty. Operand 7831 states and 10581 transitions. [2020-10-13 09:46:44,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 09:46:44,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:44,809 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:46:44,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:46:44,810 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:44,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:44,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1199782291, now seen corresponding path program 1 times [2020-10-13 09:46:44,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:44,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169694290] [2020-10-13 09:46:44,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:44,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:45,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:45,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 09:46:45,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:45,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-13 09:46:45,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:46:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:46:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:46:45,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:45,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:45,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:45,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:45,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:45,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:45,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:46:45,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:45,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:45,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:45,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:46:45,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:45,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:45,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:45,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:45,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:46:45,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:45,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 09:46:45,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:46:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:46:45,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:45,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169694290] [2020-10-13 09:46:45,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:46:45,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 09:46:45,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281198304] [2020-10-13 09:46:45,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:46:45,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:45,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:46:45,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:46:45,594 INFO L87 Difference]: Start difference. First operand 7831 states and 10581 transitions. Second operand 7 states. [2020-10-13 09:46:55,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:55,373 INFO L93 Difference]: Finished difference Result 20070 states and 28110 transitions. [2020-10-13 09:46:55,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:46:55,374 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-13 09:46:55,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:55,495 INFO L225 Difference]: With dead ends: 20070 [2020-10-13 09:46:55,495 INFO L226 Difference]: Without dead ends: 12245 [2020-10-13 09:46:55,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:46:55,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12245 states. [2020-10-13 09:46:55,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12245 to 11511. [2020-10-13 09:46:55,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11511 states. [2020-10-13 09:46:55,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11511 states to 11511 states and 14898 transitions. [2020-10-13 09:46:55,783 INFO L78 Accepts]: Start accepts. Automaton has 11511 states and 14898 transitions. Word has length 118 [2020-10-13 09:46:55,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:55,784 INFO L479 AbstractCegarLoop]: Abstraction has 11511 states and 14898 transitions. [2020-10-13 09:46:55,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:46:55,784 INFO L276 IsEmpty]: Start isEmpty. Operand 11511 states and 14898 transitions. [2020-10-13 09:46:55,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 09:46:55,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:55,786 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:46:55,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:46:55,787 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:55,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:55,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1618208947, now seen corresponding path program 1 times [2020-10-13 09:46:55,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:55,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349935318] [2020-10-13 09:46:55,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:55,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:55,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:56,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:56,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 09:46:56,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:46:56,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1112 [2020-10-13 09:46:56,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:56,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:56,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 09:46:56,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:46:56,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:57,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:57,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:57,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:57,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:57,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:57,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:46:57,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:57,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:57,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:57,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:57,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:57,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:57,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:57,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:57,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:46:57,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:57,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:46:57,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:57,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:57,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:57,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:46:57,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:46:57,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349935318] [2020-10-13 09:46:57,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:57,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:46:57,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016797542] [2020-10-13 09:46:57,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:46:57,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:57,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:46:57,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:46:57,230 INFO L87 Difference]: Start difference. First operand 11511 states and 14898 transitions. Second operand 6 states. [2020-10-13 09:47:10,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:10,518 INFO L93 Difference]: Finished difference Result 33683 states and 45937 transitions. [2020-10-13 09:47:10,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:47:10,519 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-13 09:47:10,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:10,593 INFO L225 Difference]: With dead ends: 33683 [2020-10-13 09:47:10,594 INFO L226 Difference]: Without dead ends: 22178 [2020-10-13 09:47:10,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:47:10,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22178 states. [2020-10-13 09:47:11,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22178 to 18649. [2020-10-13 09:47:11,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18649 states. [2020-10-13 09:47:11,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18649 states to 18649 states and 24676 transitions. [2020-10-13 09:47:11,112 INFO L78 Accepts]: Start accepts. Automaton has 18649 states and 24676 transitions. Word has length 134 [2020-10-13 09:47:11,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:11,112 INFO L479 AbstractCegarLoop]: Abstraction has 18649 states and 24676 transitions. [2020-10-13 09:47:11,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:47:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 18649 states and 24676 transitions. [2020-10-13 09:47:11,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-13 09:47:11,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:11,120 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:47:11,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:47:11,121 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:11,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:11,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1625746489, now seen corresponding path program 1 times [2020-10-13 09:47:11,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:11,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26166650] [2020-10-13 09:47:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:11,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:11,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:12,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:12,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-13 09:47:12,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:47:12,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1593 [2020-10-13 09:47:12,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:12,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:47:12,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 09:47:12,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:12,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:12,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:12,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:12,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:12,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:12,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:47:12,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:12,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:12,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:12,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:12,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:12,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:47:12,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:12,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 09:47:12,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:47:12,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:47:13,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:47:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:13,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:13,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:13,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:47:13,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:13,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 09:47:13,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:47:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:47:13,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:47:13,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26166650] [2020-10-13 09:47:13,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:13,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:47:13,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73920990] [2020-10-13 09:47:13,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:47:13,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:13,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:47:13,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:47:13,305 INFO L87 Difference]: Start difference. First operand 18649 states and 24676 transitions. Second operand 8 states. [2020-10-13 09:47:31,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:31,215 INFO L93 Difference]: Finished difference Result 43270 states and 57428 transitions. [2020-10-13 09:47:31,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 09:47:31,221 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 240 [2020-10-13 09:47:31,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:31,300 INFO L225 Difference]: With dead ends: 43270 [2020-10-13 09:47:31,301 INFO L226 Difference]: Without dead ends: 23133 [2020-10-13 09:47:31,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:47:31,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23133 states. [2020-10-13 09:47:31,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23133 to 21689. [2020-10-13 09:47:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21689 states. [2020-10-13 09:47:31,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21689 states to 21689 states and 24375 transitions. [2020-10-13 09:47:31,917 INFO L78 Accepts]: Start accepts. Automaton has 21689 states and 24375 transitions. Word has length 240 [2020-10-13 09:47:31,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:31,917 INFO L479 AbstractCegarLoop]: Abstraction has 21689 states and 24375 transitions. [2020-10-13 09:47:31,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:47:31,918 INFO L276 IsEmpty]: Start isEmpty. Operand 21689 states and 24375 transitions. [2020-10-13 09:47:31,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-13 09:47:31,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:31,931 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:47:31,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:47:31,931 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:31,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:31,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1419131365, now seen corresponding path program 1 times [2020-10-13 09:47:31,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:31,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219768365] [2020-10-13 09:47:31,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:32,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:32,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:32,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:37,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:37,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-13 09:47:37,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:47:37,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 09:47:37,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:37,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:37,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-13 09:47:37,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 09:47:37,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:37,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:37,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:37,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:37,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:37,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:37,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:47:37,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:37,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:37,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:37,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:37,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:37,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:37,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:37,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:37,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:47:37,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:37,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:47:37,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:37,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:37,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:37,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:47:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:37,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:37,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:37,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:47:37,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:37,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 09:47:37,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:37,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:37,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:47:37,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:47:37,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-13 09:47:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:37,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:37,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:37,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:47:37,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:37,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 09:47:37,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:37,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:37,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:47:37,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:47:37,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-13 09:47:37,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219768365] [2020-10-13 09:47:37,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:37,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:47:37,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641656854] [2020-10-13 09:47:37,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:47:37,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:37,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:47:37,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:47:37,716 INFO L87 Difference]: Start difference. First operand 21689 states and 24375 transitions. Second operand 7 states. [2020-10-13 09:47:51,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:51,879 INFO L93 Difference]: Finished difference Result 50989 states and 59366 transitions. [2020-10-13 09:47:51,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:47:51,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 346 [2020-10-13 09:47:51,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:51,989 INFO L225 Difference]: With dead ends: 50989 [2020-10-13 09:47:51,989 INFO L226 Difference]: Without dead ends: 29310 [2020-10-13 09:47:52,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:47:52,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29310 states. [2020-10-13 09:47:52,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29310 to 29116. [2020-10-13 09:47:52,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29116 states. [2020-10-13 09:47:52,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29116 states to 29116 states and 32873 transitions. [2020-10-13 09:47:52,707 INFO L78 Accepts]: Start accepts. Automaton has 29116 states and 32873 transitions. Word has length 346 [2020-10-13 09:47:52,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:52,708 INFO L479 AbstractCegarLoop]: Abstraction has 29116 states and 32873 transitions. [2020-10-13 09:47:52,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:47:52,708 INFO L276 IsEmpty]: Start isEmpty. Operand 29116 states and 32873 transitions. [2020-10-13 09:47:52,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-13 09:47:52,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:52,737 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:47:52,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:47:52,738 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:52,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:52,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1038436370, now seen corresponding path program 1 times [2020-10-13 09:47:52,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:52,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851274965] [2020-10-13 09:47:52,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:52,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:52,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:54,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:57,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:57,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-13 09:47:57,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:47:57,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4821 [2020-10-13 09:47:57,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:57,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:47:57,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:47:57,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:47:57,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:57,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:57,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:57,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:57,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:57,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:57,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:47:57,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:57,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:57,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:57,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:47:57,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:57,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:57,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:57,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:57,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:47:57,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:57,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 09:47:57,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:47:57,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:47:57,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:47:57,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:47:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:57,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:57,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:57,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:47:57,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:57,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:47:57,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:57,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:57,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:47:57,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:57,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:47:57,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-13 09:47:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:57,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:58,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:58,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 09:47:58,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:58,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:47:58,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:58,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:58,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-13 09:47:58,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:58,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:47:58,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-13 09:47:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:58,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:58,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:58,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:47:58,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:58,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:47:58,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 09:47:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:58,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:58,356 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 64 proven. 236 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-13 09:47:58,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851274965] [2020-10-13 09:47:58,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:58,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:47:58,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703217920] [2020-10-13 09:47:58,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:47:58,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:58,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:47:58,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:47:58,362 INFO L87 Difference]: Start difference. First operand 29116 states and 32873 transitions. Second operand 7 states. [2020-10-13 09:48:07,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:07,161 INFO L93 Difference]: Finished difference Result 75520 states and 86407 transitions. [2020-10-13 09:48:07,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:48:07,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 399 [2020-10-13 09:48:07,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:07,306 INFO L225 Difference]: With dead ends: 75520 [2020-10-13 09:48:07,306 INFO L226 Difference]: Without dead ends: 46414 [2020-10-13 09:48:07,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:48:07,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46414 states. [2020-10-13 09:48:08,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46414 to 45605. [2020-10-13 09:48:08,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45605 states. [2020-10-13 09:48:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45605 states to 45605 states and 50719 transitions. [2020-10-13 09:48:08,384 INFO L78 Accepts]: Start accepts. Automaton has 45605 states and 50719 transitions. Word has length 399 [2020-10-13 09:48:08,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:08,384 INFO L479 AbstractCegarLoop]: Abstraction has 45605 states and 50719 transitions. [2020-10-13 09:48:08,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:48:08,385 INFO L276 IsEmpty]: Start isEmpty. Operand 45605 states and 50719 transitions. [2020-10-13 09:48:08,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2020-10-13 09:48:08,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:08,421 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:48:08,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:48:08,421 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:08,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:08,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1274836332, now seen corresponding path program 1 times [2020-10-13 09:48:08,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:08,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130111160] [2020-10-13 09:48:08,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:08,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:08,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:11,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:13,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:13,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 666 [2020-10-13 09:48:13,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:48:13,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 09:48:13,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:13,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:48:13,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:48:13,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 09:48:13,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:13,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:13,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:13,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:13,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:13,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:48:13,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:48:13,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:13,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:13,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:13,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:13,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:48:13,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:13,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-13 09:48:13,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:13,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:13,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:48:13,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:48:13,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:14,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:48:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:14,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:14,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:14,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-13 09:48:14,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:14,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-13 09:48:14,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:14,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 410 [2020-10-13 09:48:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:14,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:14,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:48:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:14,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:14,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:14,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 09:48:14,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:14,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:48:14,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:14,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-10-13 09:48:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:14,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:14,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:14,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:48:14,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:14,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:48:14,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:14,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:14,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 09:48:14,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:14,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 48 proven. 207 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-13 09:48:15,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130111160] [2020-10-13 09:48:15,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:15,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:48:15,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550316605] [2020-10-13 09:48:15,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:48:15,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:15,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:48:15,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:48:15,157 INFO L87 Difference]: Start difference. First operand 45605 states and 50719 transitions. Second operand 7 states. [2020-10-13 09:48:22,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:22,864 INFO L93 Difference]: Finished difference Result 91069 states and 100085 transitions. [2020-10-13 09:48:22,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:48:22,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 650 [2020-10-13 09:48:22,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:22,977 INFO L225 Difference]: With dead ends: 91069 [2020-10-13 09:48:22,977 INFO L226 Difference]: Without dead ends: 45474 [2020-10-13 09:48:23,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:48:23,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45474 states. [2020-10-13 09:48:23,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45474 to 43324. [2020-10-13 09:48:23,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43324 states. [2020-10-13 09:48:23,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43324 states to 43324 states and 47124 transitions. [2020-10-13 09:48:23,689 INFO L78 Accepts]: Start accepts. Automaton has 43324 states and 47124 transitions. Word has length 650 [2020-10-13 09:48:23,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:23,690 INFO L479 AbstractCegarLoop]: Abstraction has 43324 states and 47124 transitions. [2020-10-13 09:48:23,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:48:23,690 INFO L276 IsEmpty]: Start isEmpty. Operand 43324 states and 47124 transitions. [2020-10-13 09:48:23,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1178 [2020-10-13 09:48:23,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:23,753 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:48:23,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:48:23,754 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:23,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:23,754 INFO L82 PathProgramCache]: Analyzing trace with hash 181820643, now seen corresponding path program 1 times [2020-10-13 09:48:23,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:23,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87927936] [2020-10-13 09:48:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:24,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:24,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:29,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:29,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1199 [2020-10-13 09:48:29,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:48:29,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 09:48:29,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:29,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:29,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 535 [2020-10-13 09:48:29,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 09:48:29,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:29,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:29,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:29,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:29,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:29,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:29,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:48:29,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:29,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:29,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:29,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:29,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:29,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-13 09:48:29,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:29,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-13 09:48:29,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 520 [2020-10-13 09:48:29,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:29,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:48:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:29,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:29,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:29,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 09:48:29,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:29,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-13 09:48:29,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:29,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:29,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:29,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-13 09:48:29,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:29,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:48:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:29,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:29,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:29,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 09:48:29,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:29,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:48:29,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:29,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:29,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:29,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 09:48:29,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:30,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-13 09:48:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:30,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:30,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:30,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:48:30,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:30,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:48:30,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:30,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:30,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:48:30,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:48:30,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:30,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-13 09:48:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:30,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:30,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:30,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-13 09:48:30,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:30,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 09:48:30,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 410 [2020-10-13 09:48:30,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:30,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:48:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:30,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:30,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:30,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 09:48:30,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:30,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:48:30,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:30,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:30,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:30,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:30,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:30,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-13 09:48:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:30,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:30,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:30,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:48:30,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:30,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:48:30,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 09:48:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:30,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:32,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 191 proven. 216 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2020-10-13 09:48:32,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87927936] [2020-10-13 09:48:32,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:32,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:48:32,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816879158] [2020-10-13 09:48:32,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:48:32,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:32,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:48:32,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:48:32,705 INFO L87 Difference]: Start difference. First operand 43324 states and 47124 transitions. Second operand 7 states. [2020-10-13 09:48:40,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:40,905 INFO L93 Difference]: Finished difference Result 96587 states and 105716 transitions. [2020-10-13 09:48:40,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:48:40,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1177 [2020-10-13 09:48:40,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:41,004 INFO L225 Difference]: With dead ends: 96587 [2020-10-13 09:48:41,004 INFO L226 Difference]: Without dead ends: 50397 [2020-10-13 09:48:41,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:48:41,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50397 states. [2020-10-13 09:48:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50397 to 46851. [2020-10-13 09:48:41,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46851 states. [2020-10-13 09:48:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46851 states to 46851 states and 50935 transitions. [2020-10-13 09:48:41,773 INFO L78 Accepts]: Start accepts. Automaton has 46851 states and 50935 transitions. Word has length 1177 [2020-10-13 09:48:41,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:41,775 INFO L479 AbstractCegarLoop]: Abstraction has 46851 states and 50935 transitions. [2020-10-13 09:48:41,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:48:41,776 INFO L276 IsEmpty]: Start isEmpty. Operand 46851 states and 50935 transitions. [2020-10-13 09:48:41,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1252 [2020-10-13 09:48:41,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:41,816 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:48:41,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:48:41,817 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:41,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:41,818 INFO L82 PathProgramCache]: Analyzing trace with hash 915425908, now seen corresponding path program 1 times [2020-10-13 09:48:41,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:41,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682824501] [2020-10-13 09:48:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:42,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:42,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:43,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:47,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:47,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1277 [2020-10-13 09:48:47,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:48:47,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5113 [2020-10-13 09:48:47,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:47,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:47,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-13 09:48:47,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:48:47,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:47,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:48:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:47,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:47,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:47,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:48:47,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:47,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:48:47,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:47,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:47,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:48:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:47,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:47,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:47,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-13 09:48:47,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:47,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 09:48:47,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:47,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:47,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:47,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:47,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:47,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:48:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:47,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:47,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:47,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 09:48:47,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:47,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:48:47,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:47,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:47,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:48:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:47,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:47,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:47,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 09:48:47,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:47,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:48:47,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:47,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:47,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:47,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:47,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:48,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-13 09:48:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:48,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:48,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:48,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 09:48:48,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:48,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-13 09:48:48,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:48,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:48,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:48,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-13 09:48:48,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:48,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:48:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:48,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:48,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:48,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 09:48:48,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:48,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:48:48,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:48,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:48:48,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:48:48,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:48:48,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:48,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-13 09:48:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:48,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:48,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:48,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:48:48,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:48,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:48:48,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:48,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:48:48,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:48:48,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:48:48,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:48,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-13 09:48:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:48,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:48,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:48,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:48:48,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:48,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:48:48,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:48,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:48,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:48:48,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:48,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:48,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1003 [2020-10-13 09:48:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:48,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:48,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:48,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 09:48:48,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:48,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:48:48,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:48,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:48,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-13 09:48:48,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:48,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:48,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1141 [2020-10-13 09:48:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:48,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:48,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:48:48,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:48:48,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:48:48,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:48:48,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:48:48,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:48:48,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 09:48:48,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:48:48,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:48:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1679 backedges. 302 proven. 244 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2020-10-13 09:48:49,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682824501] [2020-10-13 09:48:49,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:48:49,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:48:49,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954704553] [2020-10-13 09:48:49,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:48:49,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:48:49,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:48:49,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:48:49,252 INFO L87 Difference]: Start difference. First operand 46851 states and 50935 transitions. Second operand 7 states. [2020-10-13 09:48:58,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:48:58,030 INFO L93 Difference]: Finished difference Result 116261 states and 127920 transitions. [2020-10-13 09:48:58,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:48:58,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1251 [2020-10-13 09:48:58,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:48:58,196 INFO L225 Difference]: With dead ends: 116261 [2020-10-13 09:48:58,196 INFO L226 Difference]: Without dead ends: 70118 [2020-10-13 09:48:58,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:48:58,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70118 states. [2020-10-13 09:48:58,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70118 to 69389. [2020-10-13 09:48:58,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69389 states. [2020-10-13 09:48:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69389 states to 69389 states and 75531 transitions. [2020-10-13 09:48:59,051 INFO L78 Accepts]: Start accepts. Automaton has 69389 states and 75531 transitions. Word has length 1251 [2020-10-13 09:48:59,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:48:59,052 INFO L479 AbstractCegarLoop]: Abstraction has 69389 states and 75531 transitions. [2020-10-13 09:48:59,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:48:59,052 INFO L276 IsEmpty]: Start isEmpty. Operand 69389 states and 75531 transitions. [2020-10-13 09:48:59,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1335 [2020-10-13 09:48:59,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:48:59,084 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:48:59,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:48:59,084 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:48:59,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:48:59,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1272897758, now seen corresponding path program 1 times [2020-10-13 09:48:59,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:48:59,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360283206] [2020-10-13 09:48:59,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:48:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:48:59,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:48:59,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:01,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:02,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:04,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:04,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1362 [2020-10-13 09:49:04,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:49:04,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-13 09:49:04,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-13 09:49:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:49:04,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:04,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:04,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:04,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:04,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:04,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:04,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:49:04,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:04,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:04,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:04,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:04,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:04,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-13 09:49:04,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:04,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:49:04,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:04,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:04,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:04,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:04,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:04,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:49:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:04,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:04,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:04,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 09:49:04,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:04,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:49:04,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:04,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:04,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:04,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:04,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:04,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:49:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:04,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:04,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:04,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 09:49:04,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:04,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:49:04,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:04,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:04,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-13 09:49:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:04,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:05,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:05,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-13 09:49:05,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:05,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 09:49:05,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-13 09:49:05,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:05,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:49:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:05,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:05,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:05,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 09:49:05,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:05,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:49:05,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:05,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:05,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:05,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:49:05,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:05,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-13 09:49:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:05,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:05,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:05,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:49:05,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:05,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:49:05,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:49:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:49:05,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:05,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 925 [2020-10-13 09:49:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:05,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:05,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:05,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:49:05,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:05,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:49:05,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:05,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:05,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 09:49:05,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:05,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:05,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1015 [2020-10-13 09:49:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:05,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:05,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:05,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:49:05,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:05,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:49:05,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:49:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:05,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:05,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1086 [2020-10-13 09:49:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:05,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:05,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:05,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 09:49:05,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:05,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:49:05,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:05,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:05,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-13 09:49:05,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:05,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:05,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1224 [2020-10-13 09:49:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:05,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:05,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:05,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:49:05,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:05,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:49:05,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:05,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:05,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 09:49:05,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:05,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2153 backedges. 298 proven. 289 refuted. 0 times theorem prover too weak. 1566 trivial. 0 not checked. [2020-10-13 09:49:07,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360283206] [2020-10-13 09:49:07,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:07,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:49:07,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346683984] [2020-10-13 09:49:07,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:49:07,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:07,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:49:07,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:49:07,365 INFO L87 Difference]: Start difference. First operand 69389 states and 75531 transitions. Second operand 7 states. [2020-10-13 09:49:17,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:49:17,256 INFO L93 Difference]: Finished difference Result 144435 states and 157659 transitions. [2020-10-13 09:49:17,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:49:17,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1334 [2020-10-13 09:49:17,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:49:17,392 INFO L225 Difference]: With dead ends: 144435 [2020-10-13 09:49:17,392 INFO L226 Difference]: Without dead ends: 75754 [2020-10-13 09:49:17,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:49:17,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75754 states. [2020-10-13 09:49:18,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75754 to 75744. [2020-10-13 09:49:18,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75744 states. [2020-10-13 09:49:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75744 states to 75744 states and 82541 transitions. [2020-10-13 09:49:18,230 INFO L78 Accepts]: Start accepts. Automaton has 75744 states and 82541 transitions. Word has length 1334 [2020-10-13 09:49:18,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:49:18,231 INFO L479 AbstractCegarLoop]: Abstraction has 75744 states and 82541 transitions. [2020-10-13 09:49:18,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:49:18,231 INFO L276 IsEmpty]: Start isEmpty. Operand 75744 states and 82541 transitions. [2020-10-13 09:49:18,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1395 [2020-10-13 09:49:18,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:49:18,254 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:49:18,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:49:18,255 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:49:18,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:49:18,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1258762457, now seen corresponding path program 1 times [2020-10-13 09:49:18,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:49:18,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873317521] [2020-10-13 09:49:18,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:49:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:18,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:21,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:23,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:23,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1422 [2020-10-13 09:49:23,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:49:23,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 09:49:23,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:23,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:23,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-13 09:49:23,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 09:49:23,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:23,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:49:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:23,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:23,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:23,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:49:23,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:23,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:49:23,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:23,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:23,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:49:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:23,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:24,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:24,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-13 09:49:24,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:24,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1228 [2020-10-13 09:49:24,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:24,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:24,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:24,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:24,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:24,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:49:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:24,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:24,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:24,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 09:49:24,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:24,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:49:24,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:24,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:24,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:24,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:24,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:24,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 09:49:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:24,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:24,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:24,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 09:49:24,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:24,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:49:24,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:24,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:24,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:24,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:25,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-13 09:49:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:25,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:25,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:25,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 09:49:25,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:25,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:49:25,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:25,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:25,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:25,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:25,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:25,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:49:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:25,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:25,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:25,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 09:49:25,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:25,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:49:25,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:25,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:25,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:25,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:25,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:25,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-13 09:49:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:25,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:25,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:25,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 09:49:25,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:25,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:49:25,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:49:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:49:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 09:49:25,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:25,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-13 09:49:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:25,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:25,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:25,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:49:25,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:25,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 09:49:25,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:49:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:49:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:49:25,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:25,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1075 [2020-10-13 09:49:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:25,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:25,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:25,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:49:25,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:25,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:49:25,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:49:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:25,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:25,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1146 [2020-10-13 09:49:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:25,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:25,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:25,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 09:49:25,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:25,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:49:25,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:25,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:25,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-13 09:49:25,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:25,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:25,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1284 [2020-10-13 09:49:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:49:25,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:49:25,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:49:25,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:49:25,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:49:25,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:49:25,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:49:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:49:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 09:49:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:49:25,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:49:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2375 backedges. 419 proven. 244 refuted. 0 times theorem prover too weak. 1712 trivial. 0 not checked. [2020-10-13 09:49:26,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873317521] [2020-10-13 09:49:26,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:49:26,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:49:26,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176909363] [2020-10-13 09:49:26,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:49:26,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:49:26,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:49:26,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:49:26,384 INFO L87 Difference]: Start difference. First operand 75744 states and 82541 transitions. Second operand 7 states.